Int16Array - JavaScript
the int16array typed array represents an array of twos-complement 16-bit signed integers in the platform byte order.
...once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
... constructor int16array() creates a new int16array object.
...And 62 more matches

Int32Array - JavaScript
the int32array typed array represents an array of twos-complement 32-bit signed integers in the platform byte order.
...once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
... constructor int32array() creates a new int32array object.
...And 62 more matches

Int8Array - JavaScript
the int8array typed array represents an array of twos-complement 8-bit signed integers.
...once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
... constructor int8array() creates a new int8array object.
...And 62 more matches

Uint16Array - JavaScript
the uint16array typed array represents an array of 16-bit unsigned integers in the platform byte order.
...once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
... constructor uint16array() creates a new uint16array object.
...And 62 more matches

Uint32Array - JavaScript
the uint32array typed array represents an array of 32-bit unsigned integers in the platform byte order.
...once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
... constructor uint32array() creates a new uint32array object.
...And 62 more matches

Uint8Array - JavaScript
the uint8array typed array represents an array of 8-bit unsigned integers.
...once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
... constructor uint8array() creates a new uint8array object.
...And 62 more matches

Array - JavaScript
the javascript array class is a global object that is used in the construction of arrays; which are high-level, list-like objects.
... description arrays are list-like objects whose prototype has methods to perform traversal and mutation operations.
... neither the length of a javascript array nor the types of its elements are fixed.
...And 61 more matches

Arrays - Learn web development
previous overview: first steps next in the final article of this module, we'll look at arrays — a neat way of storing a list of data items under a single variable name.
... here we look at why this is useful, then explore how to create an array, retrieve, add, and remove items stored in an array, and more besides.
... objective: to understand what arrays are and how to manipulate them in javascript.
...And 50 more matches

Array.prototype.map() - JavaScript
the map() method creates a new array populated with the results of calling a provided function on every element in the calling array.
... syntax let new_array = arr.map(function callback( currentvalue[, index[, array]]) { // return element for new_array }[, thisarg]) parameters callback function that is called for every element of arr.
... each time callback executes, the returned value is added to new_array.
...And 29 more matches

JavaScript typed arrays - JavaScript
javascript typed arrays are array-like objects that provide a mechanism for reading and writing raw binary data in memory buffers.
... as you may already know, array objects grow and shrink dynamically and can have any javascript value.
... javascript engines perform optimizations so that these arrays are fast.
...And 28 more matches

util/array - Archive of obsolete content
helper functions for working with arrays.
... globals functions has(array, element) returns true if the given array contains the element or false otherwise.
... a simplified version of array.indexof(element) >= 0.
...And 27 more matches

Array.prototype.reduce() - JavaScript
the reduce() method executes a reducer function (that you provide) on each element of the array, resulting in single output value.
... the reducer function takes four arguments: accumulator (acc) current value (cur) current index (idx) source array (src) your reducer function's returned value is assigned to the accumulator, whose value is remembered across each iteration throughout the array, and ultimately becomes the final, single resulting value.
... syntax arr.reduce(callback( accumulator, currentvalue, [, index[, array]] )[, initialvalue]) parameters callback a function to execute on each element in the array (except for the first, if no initialvalue is supplied).
...And 26 more matches

Array.prototype.forEach() - JavaScript
the foreach() method executes a provided function once for each array element.
... syntax arr.foreach(callback(currentvalue [, index [, array]])[, thisarg]) parameters callback function to execute on each element.
... it accepts between one and three arguments: currentvalue the current element being processed in the array.
...And 21 more matches

Array.prototype.filter() - JavaScript
the filter() method creates a new array with all elements that pass the test implemented by the provided function.
... syntax let newarray = arr.filter(callback(element[, index, [array]])[, thisarg]) parameters callback function is a predicate, to test each element of the array.
... it accepts three arguments: element the current element being processed in the array.
...And 20 more matches

Array.from() - JavaScript
the array.from() static method creates a new, shallow-copied array instance from an array-like or iterable object.
... syntax array.from(arraylike [, mapfn [, thisarg]]) parameters arraylike an array-like or iterable object to convert to an array.
... mapfn optional map function to call on every element of the array.
...And 20 more matches

ArrayType
arraytype represents c arrays syntax returns a new ctype representing an array data type.
... ctype arraytype() type[ length] ); parameters type: it represents the type of the elements or variable which is going to be present in an array length optional it denotes the number of entries present in an array or the number of elements that an array should contain.
... if you don't specify this parameter, the array's length is unspecified.
...And 17 more matches

Array.prototype.find() - JavaScript
the find() method returns the value of the first element in the provided array that satisfies the provided testing function.
... if you need the index of the found element in the array, use findindex().
... if you need to find the index of a value, use array.prototype.indexof().
...And 17 more matches

Array.prototype.slice() - JavaScript
the slice() method returns a shallow copy of a portion of an array into a new array object selected from start to end (end not included) where start and end represent the index of items in that array.
... the original array will not be modified.
... if start is greater than the index range of the sequence, an empty array is returned.
...And 17 more matches

Array.prototype.reduceRight() - JavaScript
the reduceright() method applies a function against an accumulator and each value of the array (from right-to-left) to reduce it to a single value.
... see also array.prototype.reduce() for left-to-right.
... syntax arr.reduceright(callback(accumulator, currentvalue[, index[, array]])[, initialvalue]) parameters callback function to execute on each value in the array, taking four arguments: accumulator the value previously returned in the last invocation of the callback, or initialvalue, if supplied.
...And 16 more matches

Array.prototype.every() - JavaScript
the every() method tests whether all elements in the array pass the test implemented by the provided function.
... syntax arr.every(callback(element[, index[, array]])[, thisarg]) parameters callback a function to test for each element, taking three arguments: element the current element being processed in the array.
... index optional the index of the current element being processed in the array.
...And 15 more matches

Array.prototype.concat() - JavaScript
the concat() method is used to merge two or more arrays.
... this method does not change the existing arrays, but instead returns a new array.
... syntax const new_array = old_array.concat([value1[, value2[, ...[, valuen]]]]) parameters valuen optional arrays and/or values to concatenate into a new array.
...And 14 more matches

Array.prototype.findIndex() - JavaScript
the findindex() method returns the index of the first element in the array that satisfies the provided testing function.
... see also the find() method, which returns the value of an array element, instead of its index.
... syntax arr.findindex(callback( element[, index[, array]] )[, thisarg]) parameters callback a function to execute on each value in the array until the function returns true, indicating that the satisfying element was found.
...And 14 more matches

Array.prototype.lastIndexOf() - JavaScript
the lastindexof() method returns the last index at which a given element can be found in the array, or -1 if it is not present.
... the array is searched backwards, starting at fromindex.
... syntax arr.lastindexof(searchelement[, fromindex]) parameters searchelement element to locate in the array.
...And 14 more matches

Array.prototype.some() - JavaScript
the some() method tests whether at least one element in the array passes the test implemented by the provided function.
... syntax arr.some(callback(element[, index[, array]])[, thisarg]) parameters callback a function to test for each element, taking three arguments: element the current element being processed in the array.
... indexoptional the index of the current element being processed in the array.
...And 14 more matches

Array.prototype.sort() - JavaScript
the sort() method sorts the elements of an array in place and returns the sorted array.
...if omitted, the array elements are converted to strings, then sorted according to each character's unicode code point value.
... return value the sorted array.
...And 14 more matches

SharedArrayBuffer - JavaScript
the sharedarraybuffer object is used to represent a generic, fixed-length raw binary data buffer, similar to the arraybuffer object, but in a way that they can be used to create views on shared memory.
... unlike an arraybuffer, a sharedarraybuffer cannot become detached.
... description allocating and sharing memory to share memory using sharedarraybuffer objects from one agent in the cluster to another (an agent is either the web page’s main program or one of its web workers), postmessage and structured cloning is used.
...And 14 more matches

TypedArray.from() - JavaScript
the typedarray.from() method creates a new typed array from an array-like or iterable object.
... this method is nearly the same as array.from().
... syntax typedarray.from(source[, mapfn[, thisarg]]) where typedarray is one of: int8array uint8array uint8clampedarray int16array uint16array int32array uint32array float32array float64array bigint64array biguint64array parameters source an array-like or iterable object to convert to a typed array.
...And 14 more matches

TypedArray.prototype.map() - JavaScript
the map() method creates a new typed array with the results of calling a provided function on every element in this typed array.
... this method has the same algorithm as array.prototype.map().
... typedarray is one of the typed array types here.
...And 14 more matches

VBArray - Archive of obsolete content
the vbarray object provides access to visual basic safe arrays.
... syntax varname = new vbarray(safearray) parameters varname the variable name to which the vbarray is assigned.
... safearray a vbarray value.
...And 13 more matches

JavaArray - Archive of obsolete content
summary core object a wrapped java array accessed from within javascript code is a member of the type javaarray.
... created by any java method which returns an array.
... in addition, you can create a javaarray with an arbitrary data type using the newinstance method of the array class: public static object newinstance(class componenttype, int length) throws negativearraysizeexception description the javaarray object is an instance of a java array that is created in or passed to javascript.
...And 13 more matches

Test your skills: Arrays - Learn web development
this aim of this skill test is to assess whether you've understood our arrays article.
... arrays 1 let's start off with some basic array practice.
... in this task we'd like you to create an array of three items, stored inside a variable called myarray.
...And 13 more matches

nsIArray
xpcom/ds/nsiarray.idlscriptable this interface implements an array object.
...indexes are zero-based, such that the last element in the array is stored at the index length-1.
... for an array which can be modified, see nsimutablearray.
...And 13 more matches

nsIMutableArray
xpcom/ds/nsimutablearray.idlscriptable this interface is a subclass of nsiarray that provides arrays that are mutable; that is, they can be altered programmatically.
... inherits from: nsiarray last changed in gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) consumers of nsiarray should not queryinterface to nsimutablearray unless they own the array.
... as above, it is legal to add null elements to the array.
...And 13 more matches

Working with ArrayBuffers
an arraybuffer is a simply byte array.
... the js-ctypes equivalent is a ctypes.uint8_t.array(###) (ctypes.unsigned_char are also ctypes.uint8_t).
... bug 732936 includes a discussion of working with an arraybuffer.
...And 13 more matches

Array.prototype.push() - JavaScript
the push() method adds one or more elements to the end of an array and returns the new length of the array.
... syntax arr.push([element1[, ...[, elementn]]]) parameters elementn the element(s) to add to the end of the array.
... description the push method appends values to an array.
...And 13 more matches

TypedArray.prototype.filter() - JavaScript
the filter() method creates a new typed array with all elements that pass the test implemented by the provided function.
... this method has the same algorithm as array.prototype.filter().
... typedarray is one of the typed array types here.
...And 13 more matches

JS_NewArrayObject
create a new array object.
... syntax jsobject * js_newarrayobject(jscontext *cx, const js::handlevaluearray& contents); // added in spidermonkey 31 jsobject * js_newarrayobject(jscontext *cx, size_t length); // added in spidermonkey 31 jsobject * js_newarrayobject(jscontext *cx, int length, jsval *vector); // obsolete since jsapi 30 name type description cx jscontext * the context in which to create the new array.
... contents js::handlevaluearray& reference to the initial values for the array's elements.
...And 12 more matches

TypedArray.prototype.find() - JavaScript
the find() method returns a value in the typed array, if an element satisfies the provided testing function.
...typedarray is one of the typed array types here.
... see also the findindex() method, which returns the index of a found element in the typed array instead of its value.
...And 12 more matches

TypedArray.prototype.findIndex() - JavaScript
the findindex() method returns an index in the typed array, if an element in the typed array satisfies the provided testing function.
... see also the find() method, which returns the value of a found element in the typed array instead of its index.
... syntax typedarray.findindex(callback[, thisarg]) parameters callback function to execute on each value in the typed array, taking three arguments: element the current element being processed in the typed array.
...And 12 more matches

TypedArray.prototype.some() - JavaScript
the some() method tests whether some element in the typed array passes the test implemented by the provided function.
... this method has the same algorithm as array.prototype.some().
... typedarray is one of the typed array types here.
...And 12 more matches

JS::HandleValueArray
this article covers features introduced in spidermonkey 31 a handle to an array of rooted values.
... syntax js::handlevaluearray(const js::rootedvalue& value); js::handlevaluearray(const js::autovaluevector& values); js::handlevaluearray(const js::autovaluearray<n>& values); js::handlevaluearray(const js::callargs& args); js::handlevaluearray::frommarkedlocation(size_t len, const js::value *elements); js::handlevaluearray::subarray(const js::handlevaluearray& values, size_t startindex, size_t len); js::handlevaluearray::empty(); name type description value js::rootedvalue &amp; an element of newly created 1-length array.
... values js::autovaluevector &amp; elements of newly created array.
...And 11 more matches

Array.prototype.indexOf() - JavaScript
the indexof() method returns the first index at which a given element can be found in the array, or -1 if it is not present.
... syntax arr.indexof(searchelement[, fromindex]) parameters searchelement element to locate in the array.
...if the index is greater than or equal to the array's length, -1 is returned, which means the array will not be searched.
...And 11 more matches

Array.prototype.splice() - JavaScript
the splice() method changes the contents of an array by removing or replacing existing elements and/or adding new elements in place.
... syntax let arrdeleteditems = array.splice(start[, deletecount[, item1[, item2[, ...]]]]) parameters start the index at which to start changing the array.
... if greater than the length of the array, start will be set to the length of the array.
...And 11 more matches

TypedArray.prototype.lastIndexOf() - JavaScript
the lastindexof() method returns the last index at which a given element can be found in the typed array, or -1 if it is not present.
... the typed array is searched backwards, starting at fromindex.
... this method has the same algorithm as array.prototype.lastindexof().
...And 11 more matches

TypedArray.prototype.reduce() - JavaScript
the reduce() method applies a function against an accumulator and each value of the typed array (from left-to-right) has to reduce it to a single value.
... this method has the same algorithm as array.prototype.reduce().
... typedarray is one of the typed array types here.
...And 11 more matches

TypedArray.prototype.reduceRight() - JavaScript
the reduceright() method applies a function against an accumulator and each value of the typed array (from right-to-left) has to reduce it to a single value.
... this method has the same algorithm as array.prototype.reduceright().
... typedarray is one of the typed array types here.
...And 11 more matches

Uint16Array() constructor - JavaScript
the uint16array() typed array constructor creates an array of 16-bit unsigned integers in the platform byte order.
... syntax new uint16array(); // new in es2017 new uint16array(length); new uint16array(typedarray); new uint16array(object); new uint16array(buffer [, byteoffset [, length]]); parameters length when called with a length argument, an internal array buffer is created in memory, of size length multiplied by bytes_per_element bytes, containing zeros.
... typedarray when called with a typedarray argument, which can be an object of any of the typed array types (such as int32array), the typedarray gets copied into a new typed array.
...And 11 more matches

Array.prototype.fill() - JavaScript
the fill() method changes all elements in an array to a static value, from a start index (default 0) to an end index (default array.length).
... it returns the modified array.
... syntax arr.fill(value[, start[, end]]) parameters value value to fill the array with.
...And 10 more matches

Array.prototype.includes() - JavaScript
the includes() method determines whether an array includes a certain value among its entries, returning true or false as appropriate.
... fromindex optional the position in this array at which to begin searching for valuetofind.
... the first element to be searched is found at fromindex for positive values of fromindex, or at arr.length + fromindex for negative values of fromindex (using the absolute value of fromindex as the number of elements from the end of the array at which to start the search).
...And 10 more matches

TypedArray.prototype.every() - JavaScript
the every() method tests whether all elements in the typed array pass the test implemented by the provided function.
... this method has the same algorithm as array.prototype.every().
... typedarray is one of the typed array types here.
...And 10 more matches

Array comprehensions - Archive of obsolete content
the array comprehensions syntax is non-standard and removed starting with firefox 58.
... for future-facing usages, consider using array.prototype.map, array.prototype.filter, arrow functions, and spread syntax.
... the array comprehension syntax was a javascript expression which allowed you to quickly assemble a new array based on an existing one.
...And 9 more matches

JS_SetArrayLength
syntax bool js_setarraylength(jscontext *cx, js::handle<jsobject*> obj, uint32_t length); name type description cx jscontext * the context in which to change the length of the array.
... obj js::handle&lt;jsobject*&gt; the array to modify.
... length uint32_t number of array elements to set.
...And 9 more matches

ArrayBuffer - JavaScript
the arraybuffer object is used to represent a generic, fixed-length raw binary data buffer.
... it is an array of bytes, often referred to in other languages as a "byte array".you cannot directly manipulate the contents of an arraybuffer; instead, you create one of the typed array objects or a dataview object which represents the buffer in a specific format, and use that to read and write the contents of the buffer.
... the arraybuffer() constructor creates a new arraybuffer of the given length in bytes.
...And 9 more matches

TypedArray.prototype.forEach() - JavaScript
the foreach() method executes a provided function once per array element.
... this method has the same algorithm as array.prototype.foreach().
... typedarray is one of the typed array types here.
...And 9 more matches

TypedArray.prototype.indexOf() - JavaScript
the indexof() method returns the first index at which a given element can be found in the typed array, or -1 if it is not present.
... this method has the same algorithm as array.prototype.indexof().
... typedarray is one of the typed array types here.
...And 9 more matches

VBArray.lbound - Archive of obsolete content
the vbarray.lbound method returns the lowest index value used in the specified dimension of a vbarray.
... syntax safearray.lbound(dimension) remarks if the vbarray is empty, the lbound method returns undefined.
... if dimension is greater than the number of dimensions in the vbarray, or is negative, the method generates a "subscript out of range" error.
...And 8 more matches

WebGLRenderingContext.enableVertexAttribArray() - Web APIs
the webglrenderingcontext method enablevertexattribarray(), part of the webgl api, turns on the generic vertex attribute array at the specified index into the list of attribute arrays.
... you can disable the attribute array by calling disablevertexattribarray().
... either way, since attributes cannot be used unless enabled, and are disabled by default, you need to call enablevertexattribarray() to enable individual attributes so that they can be used.
...And 8 more matches

Array.prototype.length - JavaScript
the length property of an object which is an instance of type array sets or returns the number of elements in that array.
... the value is an unsigned, 32-bit integer that is always numerically greater than the highest index in the array.
... var namelista = new array(4294967296); //2 to the 32nd power = 4294967296 var namelistc = new array(-100) //negative sign console.log(namelista.length); //rangeerror: invalid array length console.log(namelistc.length); //rangeerror: invalid array length var namelistb = []; namelistb.length = math.pow(2,32)-1; //set array length less than 2 to the 32nd power console.log(namelistb.length); //4294967295 you can set the length property to...
...And 8 more matches

BigInt64Array() constructor - JavaScript
the bigint64array() typed array constructor creates a new bigint64array object, which is, an array of 64-bit signed integers in the platform byte order.
...once established, you can reference elements in the array using the object's methods, or by using standard array index syntax (that is, using bracket notation).
... syntax new bigint64array(); new bigint64array(length); new bigint64array(typedarray); new bigint64array(object); new bigint64array(buffer [, byteoffset [, length]]); parameters length when called with a length argument, an internal array buffer is created in memory, of size length multiplied by bytes_per_element bytes, containing zeros.
...And 8 more matches

BigUint64Array() constructor - JavaScript
the biguint64array() typed array constructor creates a new biguint64array object, which is, an array of 64-bit unsigned integers in the platform byte order.
...once established, you can reference elements in the array using the object's methods, or by using standard array index syntax (that is, using bracket notation).
... syntax new biguint64array(); new biguint64array(length); new biguint64array(typedarray); new biguint64array(object); new biguint64array(buffer [, byteoffset [, length]]); parameters length when called with a length argument, an internal array buffer is created in memory, of size length multiplied by bytes_per_element bytes, containing zeros.
...And 8 more matches

Float32Array() constructor - JavaScript
the float32array() typed array constructor creates a new float32array object, which is, an array of 32-bit floating point numbers (corresponding to the c float data type) in the platform byte order.
...once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
... syntax new float32array(); // new in es2017 new float32array(length); new float32array(typedarray); new float32array(object); new float32array(buffer [, byteoffset [, length]]); parameters length when called with a length argument, an internal array buffer is created in memory, of size length multiplied by bytes_per_element bytes, containing zeros.
...And 8 more matches

Float64Array() constructor - JavaScript
the float64array() typed array constructor creates a new float64array object, which is, an array of 64-bit floating point numbers (corresponding to the c double data type) in the platform byte order.
...once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
... syntax new float64array(); // new in es2017 new float64array(length); new float64array(typedarray); new float64array(object); new float64array(buffer [, byteoffset [, length]]); parameters length when called with a length argument, an internal array buffer is created in memory, of size length multiplied by bytes_per_element bytes, containing zeros.
...And 8 more matches

Int16Array() constructor - JavaScript
the int16array() typed array constructor creates an array of twos-complement 16-bit signed integers in the platform byte order.
...once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
... syntax new int16array(); // new in es2017 new int16array(length); new int16array(typedarray); new int16array(object); new int16array(buffer [, byteoffset [, length]]); parameters length when called with a length argument, an internal array buffer is created in memory, of size length multiplied by bytes_per_element bytes, containing zeros.
...And 8 more matches

Int32Array() constructor - JavaScript
the int32array() typed array constructor creates an array of twos-complement 32-bit signed integers in the platform byte order.
...once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
... syntax new int32array(); // new in es2017 new int32array(length); new int32array(typedarray); new int32array(object); new int32array(buffer [, byteoffset [, length]]); parameters length when called with a length argument, an internal array buffer is created in memory, of size length multiplied by bytes_per_element bytes, containing zeros.
...And 8 more matches

Int8Array() constructor - JavaScript
the int8array() constructor creates a typed array of twos-complement 8-bit signed integers.
...once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
... syntax new int8array(); // new in es2017 new int8array(length); new int8array(typedarray); new int8array(object); new int8array(buffer [, byteoffset [, length]]); parameters length when called with a length argument, an internal array buffer is created in memory, of size length multiplied by bytes_per_element bytes, containing zeros.
...And 8 more matches

TypedArray.prototype.slice() - JavaScript
the slice() method returns a shallow copy of a portion of a typed array into a new typed array object.
... this method has the same algorithm as array.prototype.slice().
... typedarray is one of the typed array types here.
...And 8 more matches

Uint32Array() constructor - JavaScript
the uint32array() typed array constructor creates an array of 32-bit unsigned integers in the platform byte order.
...once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
... syntax new uint32array(); // new in es2017 new uint32array(length); new uint32array(typedarray); new uint32array(object); new uint32array(buffer [, byteoffset [, length]]); parameters length when called with a length argument, an internal array buffer is created in memory, of size length multiplied by bytes_per_element bytes, containing zeros.
...And 8 more matches

Uint8Array() constructor - JavaScript
the uint8array() constructor creates a typed array of 8-bit unsigned integers.
...once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
... syntax new uint8array(); // new in es2017 new uint8array(length); new uint8array(typedarray); new uint8array(object); new uint8array(buffer [, byteoffset [, length]]); parameters length when called with a length argument, an internal array buffer is created in memory, of size length multiplied by bytes_per_element bytes, containing zeros.
...And 8 more matches

Uint8ClampedArray() constructor - JavaScript
the uint8clampedarray() constructor creates a typed array of 8-bit unsigned integers clamped to 0-255; if you specified a value that is out of the range of [0,255], 0 or 255 will be set instead; if you specify a non-integer, the nearest integer will be set.
...once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
... syntax new uint8clampedarray(); // new in es2017 new uint8clampedarray(length); new uint8clampedarray(typedarray); new uint8clampedarray(object); new uint8clampedarray(buffer [, byteoffset [, length]]); parameters length when called with a length argument, an internal array buffer is created in memory, of size length multiplied by bytes_per_element bytes, containing zeros.
...And 8 more matches

ArrayBuffer.transfer() - Archive of obsolete content
the static arraybuffer.transfer() method returns a new arraybuffer whose contents have been taken from the oldbuffer's data and then is either truncated or zero-extended by newbytelength.
... syntax arraybuffer.transfer(oldbuffer [, newbytelength]); parameters oldbuffer an arraybuffer object from which to transfer.
... newbytelength the byte length of the new arraybuffer object.
...And 7 more matches

VBArray.ubound - Archive of obsolete content
the vbarray.ubound method returns the highest index value used in the specified dimension of the vbarray.
... syntax safearray.ubound(dimension) parameters safearray a vbarray object.
... dimension optional the dimension of the vbarray for which the higher bound index is wanted.
...And 7 more matches

JS::AutoIdArray
this article covers features introduced in spidermonkey 17 take ownership of a jsidarray and free it later.
... syntax autoidarray(jscontext *cx, jsidarray *ida); name type description cx jscontext * the context in which to add the root.
... ida jsidarray * a pointer to jsidarray to take the ownership.
...And 7 more matches

JS::AutoValueArray
this article covers features introduced in spidermonkey 31 root an internal fixed-size array of js::values.
... syntax js::autovaluearray<n> vp(cx); name type description cx jscontext * the context in which to add the root.
... n size_t size of a js::value array.
...And 7 more matches

JS_HasArrayLength
determines if an object has an array length property.
... syntax jsbool js_hasarraylength(jscontext *cx, jsobject *obj, jsuint *lengthp); name type description cx jscontext * pointer to a js context from which to derive runtime information.
... obj jsobject * array object to get the length of.
...And 7 more matches

TypeError: can't delete non-configurable array element - JavaScript
the javascript exception "can't delete non-configurable array element" occurs when it was attempted to shorten the length of an array, but one of the array's elements is non-configurable.
... message typeerror: can't delete non-configurable array element (firefox) typeerror: cannot delete property '2' of [object array] (chrome) error type typeerror what went wrong?
... it was attempted to shorten the length of an array, but one of the array's elements is non-configurable.
...And 7 more matches

Array.prototype.join() - JavaScript
the join() method creates and returns a new string by concatenating all of the elements in an array (or an array-like object), separated by commas or a specified separator string.
... if the array has only one item, then that item will be returned without using the separator.
... syntax arr.join([separator]) parameters separator optional specifies a string to separate each pair of adjacent elements of the array.
...And 7 more matches

Array.prototype.pop() - JavaScript
the pop() method removes the last element from an array and returns that element.
... this method changes the length of the array.
... syntax arrname.pop() return value the removed element from the array; undefined if the array is empty.
...And 7 more matches

Array.prototype.reverse() - JavaScript
the reverse() method reverses an array in place.
... the first array element becomes the last, and the last array element becomes the first.
... syntax a.reverse() return value the reversed array.
...And 7 more matches

Array.observe() - Archive of obsolete content
the array.observe() method was used for asynchronously observing changes to arrays, similar to object.observe() for objects.
... syntax array.observe(arr, callback) parameters arr the array to be observed.
... callback the function called each time changes are made, with the following argument: changes an array of objects each representing a change.
...And 6 more matches

VBArray.getItem - Archive of obsolete content
the vbarray.getitem method returns the item at the specified location.
... syntax safearray.getitem(dimension1[, dimension2, ...], dimensionn) parameters safearray a vbarray object.
... dimension1, ..., dimensionn specifies the exact location of the desired element of the vbarray.
...And 6 more matches

TypeError: Reduce of empty array with no initial value - JavaScript
the javascript exception "reduce of empty array with no initial value" occurs when a reduce function is used.
... message typeerror: reduce of empty array with no initial value error type typeerror what went wrong?
... in javascript, there are several reduce functions: array.prototype.reduce(), array.prototype.reduceright() and typedarray.prototype.reduce(), typedarray.prototype.reduceright()).
...And 6 more matches

Array.prototype.flatMap() - JavaScript
the flatmap() method first maps each element using a mapping function, then flattens the result into a new array.
... syntax var new_array = arr.flatmap(function callback(currentvalue[, index[, array]]) { // return element for new_array }[, thisarg]) parameters callback function that produces an element of the new array, taking three arguments: currentvalue the current element being processed in the array.
... indexoptional the index of the current element being processed in the array.
...And 6 more matches

Array.prototype.toLocaleString() - JavaScript
the tolocalestring() method returns a string representing the elements of the array.
... syntax arr.tolocalestring([locales[, options]]); parameters locales optional a string with a bcp 47 language tag, or an array of such strings.
... return value a string representing the elements of the array.
...And 6 more matches

TypedArray.prototype.fill() - JavaScript
the fill() method fills all the elements of a typed array from a start index to an end index with a static value.
... this method has the same algorithm as array.prototype.fill().
... typedarray is one of the typed array types here.
...And 6 more matches

TypedArray.prototype.join() - JavaScript
the join() method joins all elements of an array into a string.
... this method has the same algorithm as array.prototype.join().
... typedarray is one of the typed array types here.
...And 6 more matches

TypedArray.prototype.toString() - JavaScript
the tostring() method returns a string representing the specified array and its elements.
... this method has the same algorithm as array.prototype.tostring().
... typedarray is one of the typed array types here.
...And 6 more matches

VBArray.dimensions - Archive of obsolete content
the vbarray.dimensions method returns the number of dimensions in a vbarray.
... syntax array.dimensions( ) remarks the required array is a vbarray object.
... example the dimensions method provides a way to retrieve the number of dimensions in a specified vbarray.
...And 5 more matches

Body.arrayBuffer() - Web APIs
the arraybuffer() method of the body mixin takes a response stream and reads it to completion.
... it returns a promise that resolves with an arraybuffer.
... syntax response.arraybuffer().then(function(buffer) { // do something with buffer }); parameters none.
...And 5 more matches

OES_vertex_array_object - Web APIs
the oes_vertex_array_object extension is part of the webgl api and provides vertex array objects (vaos) which encapsulate vertex array states.
... constants this extension exposes one new constant, which can be used in the gl.getparameter() method: ext.vertex_array_binding_oes returns a webglvertexarrayobject object when used in the gl.getparameter() method as the pname parameter.
... ext.createvertexarrayoes() creates a new webglvertexarrayobject.
...And 5 more matches

PluginArray - Web APIs
the pluginarray interface is used to store a list of plugin objects describing the available plugins; it's returned by the window.navigator.plugins property.
... the pluginarray is not a javascript array, but has the length property and supports accessing individual items using bracket notation (plugins[2]), as well as via item(index) and nameditem("name") methods.
... note: own properties of pluginarray objects are no longer enumerable in the latest browser versions.
...And 5 more matches

Array() constructor - JavaScript
the array() constructor is used to create array objects.
... syntax [element0, element1, ..., elementn] new array(element0, element1[, ...[, elementn]]) new array(arraylength) parameters elementn a javascript array is initialized with the given elements, except in the case where a single argument is passed to the array constructor and that argument is a number (see the arraylength parameter below).
... note that this special case only applies to javascript arrays created with the array constructor, not array literals created with the bracket syntax.
...And 5 more matches

Array.prototype.flat() - JavaScript
the flat() method creates a new array with all sub-array elements concatenated into it recursively up to the specified depth.
... syntax var newarray = arr.flat([depth]); parameters depth optional the depth level specifying how deep a nested array structure should be flattened.
... return value a new array with the sub-array elements concatenated into it.
...And 5 more matches

ArrayBuffer.prototype.slice() - JavaScript
the slice() method returns a new arraybuffer whose contents are a copy of this arraybuffer's bytes from begin, inclusive, up to end, exclusive.
... syntax arraybuffer.slice(begin[, end]) parameters begin zero-based byte index at which to begin slicing.
...if end is unspecified, the new arraybuffer contains all bytes from begin to the end of this arraybuffer.
...And 5 more matches

TypedArray.prototype.copyWithin() - JavaScript
the copywithin() method copies the sequence of array elements within the array to the position starting at target.
...the end argument is optional and defaults to the length of the array.
... this method has the same algorithm as array.prototype.copywithin.
...And 5 more matches

TypedArray.prototype.set() - JavaScript
the set() method stores multiple values in the typed array, reading input values from a specified array.
... syntax typedarray.set(array[, offset]) typedarray.set(typedarray[, offset]) parameters array the array from which to copy values.
... all values from the source array are copied into the target array, unless the length of the source array plus the offset exceeds the length of the target array, in which case an exception is thrown.
...And 5 more matches

TypedArray.prototype.sort() - JavaScript
the sort() method sorts the elements of a typed array numerically in place and returns the typed array.
... this method has the same algorithm as array.prototype.sort(), except that sorts the values numerically instead of as strings.
... typedarray is one of the typed array types here.
...And 5 more matches

JS_GetArrayLength
retrieve the number of elements in an array object.
... syntax bool js_getarraylength(jscontext *cx, js::handle<jsobject*> obj, uint32_t *lengthp); name type description cx jscontext * the context in which to look up the array's length.
...on success, *lengthp receives the length of the array.
...And 4 more matches

XRInputSourceArray - Web APIs
the interface xrinputsourcearray represents a live list of webxr input sources, and is used as the return value of the xrsession property inputsources.
... in addition to being able to access the input sources in the list using standard array notation (that is, with index numbers insize square brackets), methods are available to allow the use of iterators and the foreach() method is also available.
... properties the following properties are available on xrinputsourcearray objects.
...And 4 more matches

RangeError: invalid array length - JavaScript
the javascript exception "invalid array length" occurs when creating an array or an arraybuffer which has a length which is either negative or larger or equal to 232, or when setting the array.length property to a value which is either negative or larger or equal to 232.
... message rangeerror: array length must be a finite positive integer (edge) rangeerror: invalid array length (firefox) rangeerror: invalid array length (chrome) rangeerror: invalid array buffer length (chrome) error type rangeerror what went wrong?
... an invalid array length might appear in these situations: when creating an array or an arraybuffer which has a length which is either negative or larger or equal to 232, or when setting the array.length property to a value which is either negative or larger or equal to 232.
...And 4 more matches

Array.prototype.copyWithin() - JavaScript
the copywithin() method shallow copies part of an array to another location in the same array and returns it without modifying its length.
... return value the modified array.
... description the copywithin works like c and c++'s memmove, and is a high-performance method to shift the data of an array.
...And 4 more matches

Array.prototype.shift() - JavaScript
the shift() method removes the first element from an array and returns that removed element.
... this method changes the length of the array.
... syntax arr.shift() return value the removed element from the array; undefined if the array is empty.
...And 4 more matches

Array.prototype.values() - JavaScript
the values() method returns a new array iterator object that contains the values for each index in the array.
... syntax arr.values() return value a new array iterator object.
... examples iteration using for...of loop var arr = ['a', 'b', 'c', 'd', 'e']; var iterator = arr.values(); for (let letter of iterator) { console.log(letter); } //"a" "b" "c" "d" "e" array.prototype.values is default implementation of array.prototype[symbol.iterator].
...And 4 more matches

SharedArrayBuffer() constructor - JavaScript
note that sharedarraybuffer was disabled by default in all major browsers on 5 january, 2018 in response to spectre.
... the sharedarraybuffer() constructor is used to create a sharedarraybuffer object representing a generic, fixed-length raw binary data buffer, similar to the arraybuffer object.
... syntax new sharedarraybuffer([length]) parameters length the size, in bytes, of the array buffer to create.
...And 4 more matches

TypedArray.name - JavaScript
the typedarray.name property represents a string value of the typed array constructor name.
... property attributes of typedarray.name writable no enumerable no configurable no description typedarray objects differ from each other in the number of bytes per element and in the way the bytes are interpreted.
... the name property describes of what data type the array consists.
...And 4 more matches

TypedArray.of() - JavaScript
the typedarray.of() method creates a new typed array from a variable number of arguments.
... this method is nearly the same as array.of().
... syntax typedarray.of(element0[, element1[, ...[, elementn]]]) where typedarray is one of: int8array uint8array uint8clampedarray int16array uint16array int32array uint32array float32array float64array bigint64array biguint64array parameters elementn elements of which to create the typed array.
...And 4 more matches

Array.unobserve() - Archive of obsolete content
the array.unobserve() method was used to remove observers set by array.observe(), but has been deprecated and removed from browsers.
... syntax array.unobserve(arr, callback) parameters arr the array to stop observing.
... callback the reference to the observer to stop calling each time changes are made on the array arr.
...And 3 more matches

Array - MDN Web Docs Glossary: Definitions of Web-related terms
an array is an ordered collection of data (either primitive or object depending upon the language).
... arrays are used to store multiple values in a single variable.
... each item in an array has a number attached to it, called a numeric index, that allows you to access it.
...And 3 more matches

JS_DestroyIdArray
free a jsidarray.
... syntax void js_destroyidarray(jscontext *cx, jsidarray *ida); name type description cx jscontext * a context.
... ida jsidarray * the jsidarray to free.
...And 3 more matches

JS_GetArrayPrototype
this article covers features introduced in spidermonkey 24 retrieves the original, canonical array.prototype for an object's global object.
... syntax jsobject * js_getarrayprototype(jscontext *cx, js::handleobject forobj); name type description cx jscontext * pointer to a javascript context from which to derive runtime information.
... forobj js::handleobject an object from the global whose array.prototype is being retrieved.
...And 3 more matches

JS_IdArrayGet
this article covers features introduced in spidermonkey 17 get the item of a jsidarray.
... syntax jsid js_idarrayget(jscontext *cx, jsidarray *ida, unsigned index) name type description cx jscontext * a context.
... ida jsidarray * the jsidarray to get the length.
...And 3 more matches

JS_IsArrayObject
determine if a specified object is an array.
... syntax bool js_isarrayobject(jscontext *cx, js::handlevalue value, bool *isarray); bool js_isarrayobject(jscontext *cx, js::handleobject obj, bool *isarray); // obsolete since jsapi 44 bool js_isarrayobject(jscontext *cx, js::handlevalue value); bool js_isarrayobject(jscontext *cx, js::handleobject obj); name type description cx jscontext * a context.
... isarray bool whether the value/object is an array.
...And 3 more matches

mozIStorageBindingParamsArray
the mozistoragebindingparamsarray interface is a container for mozistoragebindingparams objects, and is used to store sets of bound parameters that will be used by the mozistoragestatement.executeasync().
... storage/public/mozistoragebindingparamsarray.idlscriptable please add a summary to this article.
... last changed in gecko 1.9.2 (firefox 3.6 / thunderbird 3.1 / fennec 1.0) inherits from: nsisupports you can only create these objects by calling the mozistoragestatement.newbindingparamsarray().
...And 3 more matches

mozIStorageValueArray
the mozistoragevaluearray interface obtains provides methods to obtain data from a given result.
... storage/public/mozistoragevaluearray.idlscriptable please add a summary to this article.
... long gettypeofindex(in unsigned long aindex); long getint32(in unsigned long aindex); long long getint64(in unsigned long aindex); double getdouble(in unsigned long aindex); autf8string getutf8string(in unsigned long aindex); astring getstring(in unsigned long aindex); void getblob(in unsigned long aindex, out unsigned long adatasize, [array,size_is(adatasize)] out octet adata); boolean getisnull(in unsigned long aindex); attributes attribute type description numentries unsigned long the number of entries in the array.
...And 3 more matches

nsISupportsArray
xpcom/ds/nsisupportsarray.idlscriptable please add a summary to this article.
... inherits from: nsicollection last changed in gecko 1.7 method overview boolean appendelements(in nsisupportsarray aelements); violates the xpcom interface guidelines nsisupportsarray clone(); void compact(); void deleteelementat(in unsigned long aindex); void deletelastelement(in nsisupports aelement); nsisupports elementat(in unsigned long aindex); violates the xpcom interface guidelines boolean enumeratebackwards(in nsisupportsarrayenumfunc afunc, in voidptr adata); violates the xpcom interface guidelines boolean enumerateforwards(in nsisupportsarrayenumfunc afunc, in voidptr adata); violates the xpcom interface guidelines boolean equals([const] in nsisupportsarray other); violates the xpcom interface guidelines long getindexof(in nsisupports apossibleelement); lo...
...ement); long indexof([const] in nsisupports apossibleelement); violates the xpcom interface guidelines long indexofstartingat([const] in nsisupports apossibleelement, in unsigned long astartindex); violates the xpcom interface guidelines boolean insertelementat(in nsisupports aelement, in unsigned long aindex); violates the xpcom interface guidelines boolean insertelementsat(in nsisupportsarray aother, in unsigned long aindex); violates the xpcom interface guidelines long lastindexof([const] in nsisupports apossibleelement); violates the xpcom interface guidelines boolean moveelement(in long afrom, in long ato); violates the xpcom interface guidelines boolean removeelementat(in unsigned long aindex); violates the xpcom interface guidelines boolean removeelementsat(in unsigned lo...
...And 3 more matches

WebGL2RenderingContext.createVertexArray() - Web APIs
the webgl2renderingcontext.createvertexarray() method of the webgl 2 api creates and initializes a webglvertexarrayobject object that represents a vertex array object (vao) pointing to vertex array data and which provides names for different sets of vertex data.
... syntax webglvertexarrayobject gl.createvertexarray(); parameters none.
... return value a webglvertexarrayobject representing a vertex array object (vao) which points to vertex array data.
...And 3 more matches

WebGL2RenderingContext.drawArraysInstanced() - Web APIs
the webgl2renderingcontext.drawarraysinstanced() method of the webgl 2 api renders primitives from array data like the gl.drawarrays() method.
... note: when using webgl 1, the angle_instanced_arrays extension can provide this method, too.
... syntax void gl.drawarraysinstanced(mode, first, count, instancecount); parameters mode a glenum specifying the type primitive to render.
...And 3 more matches

WebGL2RenderingContext.isVertexArray() - Web APIs
the webgl2renderingcontext.isvertexarray() method of the webgl api returns true if the passed object is a valid webglvertexarrayobject object.
... syntax glboolean gl.isvertexarray(vertexarray); parameters vertexarray a webglvertexarrayobject (vao) object to test.
... return value a glboolean indicating whether the given object is a valid webglvertexarrayobject object (true) or not (false).
...And 3 more matches

XRInputSourceArray.forEach() - Web APIs
the xrinputsourcearray method foreach() executes the specified callback once for each input source in the array, starting at index 0 and progressing until the end of the list.
... syntax xrinputsourcearray.foreach(callback, thisarg); parameters callback a function to execute once for each entry in the array xrinputsourcearray.
... the callback accepts up to three parameters: currentvalue a xrinputsource object which is the value of the item from within the xrinputsourcearray which is currently being processed.
...And 3 more matches

get Array[@@species] - JavaScript
the array[@@species] accessor property returns the array constructor.
... syntax array[symbol.species] return value the array constructor.
... description the species accessor property returns the default constructor for array objects.
...And 3 more matches

Array.of() - JavaScript
the array.of() method creates a new array instance from a variable number of arguments, regardless of number or type of the arguments.
... the difference between array.of() and the array constructor is in the handling of integer arguments: array.of(7) creates an array with a single element, 7, whereas array(7) creates an empty array with a length property of 7 (note: this implies an array of 7 empty slots, not slots with actual undefined values).
... array.of(7); // [7] array.of(1, 2, 3); // [1, 2, 3] array(7); // array of 7 empty slots array(1, 2, 3); // [1, 2, 3] syntax array.of(element0[, element1[, ...[, elementn]]]) parameters elementn elements used to create the array.
...And 3 more matches

Array.prototype.toString() - JavaScript
the tostring() method returns a string representing the specified array and its elements.
... syntax arr.tostring() return value a string representing the elements of the array.
... description the array object overrides the tostring method of object.
...And 3 more matches

ArrayBuffer() constructor - JavaScript
the arraybuffer() constructor is used to create arraybuffer objects.
... syntax new arraybuffer(length) parameters length the size, in bytes, of the array buffer to create.
... return value a new arraybuffer object of the specified size.
...And 3 more matches

TypedArray.prototype.includes() - JavaScript
the includes() method determines whether a typed array includes a certain element, returning true or false as appropriate.
... this method has the same algorithm as array.prototype.includes().
... typedarray is one of the typed array types here.
...And 3 more matches

TypedArray.prototype.reverse() - JavaScript
the reverse() method reverses a typed array in place.
... the first typed array element becomes the last and the last becomes the first.
... this method has the same algorithm as array.prototype.reverse().
...And 3 more matches

TypedArray.prototype.toLocaleString() - JavaScript
the tolocalestring() method returns a string representing the elements of the typed array.
...this method has the same algorithm as array.prototype.tolocalestring() and, as the typed array elements are numbers, the same algorithm as number.prototype.tolocalestring() applies for each element.
... typedarray is one of the typed array types here.
...And 3 more matches

stroke-dasharray - SVG: Scalable Vector Graphics
the stroke-dasharray attribute is a presentation attribute defining the pattern of dashes and gaps used to paint the outline of the shape; note: as a presentation attribute, stroke-dasharray can be used as a css property.
...e> <ellipse> <path> <line> <polygon> <polyline> <rect> <text> <textpath> <tref> <tspan> html,body,svg { height:100% } <svg viewbox="0 0 30 10" xmlns="http://www.w3.org/2000/svg"> <!-- no dashes nor gaps --> <line x1="0" y1="1" x2="30" y2="1" stroke="black" /> <!-- dashes and gaps of the same size --> <line x1="0" y1="3" x2="30" y2="3" stroke="black" stroke-dasharray="4" /> <!-- dashes and gaps of different sizes --> <line x1="0" y1="5" x2="30" y2="5" stroke="black" stroke-dasharray="4 1" /> <!-- dashes and gaps of various sizes with an odd number of values --> <line x1="0" y1="7" x2="30" y2="7" stroke="black" stroke-dasharray="4 1 2" /> <!-- dashes and gaps of various sizes with an even number of values --> <line x1="...
...0" y1="9" x2="30" y2="9" stroke="black" stroke-dasharray="4 1 2 3" /> </svg> usage notes value none | <dasharray> default value none animatable yes <dasharray> a list of comma and/or white space separated <length>s and <percentage>s that specify the lengths of alternating dashes and gaps.
...And 3 more matches

JS_IdArrayLength
this article covers features introduced in spidermonkey 17 get the length of a jsidarray.
... syntax int js_idarraylength(jscontext *cx, jsidarray *ida); name type description cx jscontext * a context.
... ida jsidarray * the jsidarray to get the length of.
...And 2 more matches

ANGLE_instanced_arrays - Web APIs
the angle_instanced_arrays extension is part of the webgl api and allows to draw the same object, or groups of similar objects multiple times, if they share the same vertex data, primitive count and type.
... constants this extension exposes one new constant, which can be used in the gl.getvertexattrib() method: ext.vertex_attrib_array_divisor_angle returns a glint describing the frequency divisor used for instanced rendering when used in the gl.getvertexattrib() as the pname parameter.
... ext.drawarraysinstancedangle() behaves identically to gl.drawarrays() except that multiple instances of the range of elements are executed, and the instance advances for each iteration.
...And 2 more matches

Blob.arrayBuffer() - Web APIs
the arraybuffer() method in the blob interface returns a promise that resolves with the contents of the blob as binary data contained in an arraybuffer.
... syntax var bufferpromise = blob.arraybuffer(); blob.arraybuffer().then(buffer => /* process the arraybuffer */); var buffer = await blob.arraybuffer(); parameters none.
... returns a promise that resolves with an arraybuffer that contains the blob's data in binary form.
...And 2 more matches

FileReader.readAsArrayBuffer() - Web APIs
the filereader interface's readasarraybuffer() method is used to start reading the contents of a specified blob or file.
...at that time, the result attribute contains an arraybuffer representing the file's data.
... newer api available the blob.arraybuffer() method is a newer promise-based api to read a file as an array buffer.
...And 2 more matches

FileReaderSync.readAsArrayBuffer() - Web APIs
the readasarraybuffer() method of the filereadersync interface allows to read file or blob objects in a synchronous way into an arraybuffer.
... syntax arraybuffer readasarraybuffer( in blob blob ); parameters blob the dom file or blob to read into the file or arraybuffer.
... return value an arraybuffer representing the file's data.
...And 2 more matches

MimeTypeArray - Web APIs
the mimetypearray interface returns an array of mimetype instances, each of which contains information about a supported browser plugins.
... properties mimetypearray.length the number of items in the array.
... methods mimetypearray.item() returns the mimetype object with the specified index.
...And 2 more matches

PushMessageData.arrayBuffer() - Web APIs
the arraybuffer()method of the pushmessagedata interface extracts push message data as an arraybuffer object.
... syntax var myarraybuffer = pushevent.data.arraybuffer(); parameters none.
... returns an arraybuffer.
...And 2 more matches

WebGL2RenderingContext.bindVertexArray() - Web APIs
the webgl2renderingcontext.bindvertexarray() method of the webgl 2 api binds a passed webglvertexarrayobject object to the buffer.
... syntax void gl.bindvertexarray(vertexarray); parameters vertexarray a webglvertexarrayobject (vao) object to bind.
... examples var vao = gl.createvertexarray(); gl.bindvertexarray(vao); // ...
...And 2 more matches

WebGL2RenderingContext.deleteVertexArray() - Web APIs
the webgl2renderingcontext.deletevertexarray() method of the webgl 2 api deletes a given webglvertexarrayobject object.
... syntax void gl.deletevertexarray(vertexarray); parameters vertexarray a webglvertexarrayobject (vao) object to delete.
... examples var vao = gl.createvertexarray(); gl.bindvertexarray(vao); // ...
...And 2 more matches

WebGLRenderingContext.drawArrays() - Web APIs
the webglrenderingcontext.drawarrays() method of the webgl api renders primitives from array data.
... syntax void gl.drawarrays(mode, first, count); parameters mode a glenum specifying the type primitive to render.
... first a glint specifying the starting index in the array of vector points.
...And 2 more matches

XRInputSourceArray.entries() - Web APIs
the xrinputsourcearray interface's entries() method returns a javascript iterator which can then be used to iterate over the key/value pairs in the input source array.
... each item in the array is an xrinputsource object.
... syntax let inputsourceiterator = xrinputsourcearray.entries(); for (let entry of xrinputsourcearray.entries()) { /* ...
...And 2 more matches

XRInputSourceArray.values() - Web APIs
the xrinputsourcearray method values() returns a javascript iterator that can walk over the list of xrinputsource objects contained in the array, from first to last.
... syntax xrinputsourcearray.values(); parameters none.
... return value a javascript iterator that can be used to walk through the list of xrinputsource objects in the array, starting with the first entry (at index 0) and proceeding straight through the list.
...And 2 more matches

Array.prototype[@@unscopables] - JavaScript
description the default array properties that are excluded from with bindings are: copywithin() entries() fill() find() findindex() includes() keys() values() see symbol.unscopables for how to set unscopables for your own objects.
... property attributes of array.prototype[@@unscopables] writable no enumerable no configurable yes examples use in with environments the following code works fine in es5 and below.
... however, in ecmascript 2015 and later, the array.prototype.keys() method was introduced.
...And 2 more matches

Array.prototype.toSource() - JavaScript
the tosource() method returns a string representing the source code of the array.
... syntax arr.tosource() return value a string representing the source code of the array.
... description the tosource method returns the following values: for the built-in array object, tosource returns the following string indicating that the source code is not available: function array() { [native code] } for instances of array, tosource returns a string representing the source code.
...And 2 more matches

Array.prototype.unshift() - JavaScript
the unshift() method adds one or more elements to the beginning of an array and returns the new length of the array.
... description the unshift method inserts the given values to the beginning of an array-like object.
...this method can be called or applied to objects resembling arrays.
...And 2 more matches

get ArrayBuffer[@@species] - JavaScript
the arraybuffer[@@species] accessor property returns the arraybuffer constructor.
... description the species accessor property returns the default constructor for arraybuffer objects.
... examples species in ordinary objects the species property returns the default constructor function, which is the arraybuffer constructor for arraybuffer objects: arraybuffer[symbol.species]; // function arraybuffer() species in derived objects in a derived collection object (e.g.
...And 2 more matches

SharedArrayBuffer.prototype.slice() - JavaScript
the sharedarraybuffer.prototype.slice() method returns a new sharedarraybuffer whose contents are a copy of this sharedarraybuffer's bytes from begin, inclusive, up to end, exclusive.
... if either begin or end is negative, it refers to an index from the end of the array, as opposed to from the beginning.
... this method has the same algorithm as array.prototype.slice().
...And 2 more matches

get TypedArray[@@species] - JavaScript
the typedarray[@@species] accessor property returns the constructor of a typed array.
... description the species accessor property returns the default constructor for typed array objects.
... examples species in ordinary objects the species property returns the default constructor function, which is one of the typed array constructors for a given typed array object: int8array[symbol.species]; // function int8array() uint8array[symbol.species]; // function uint8array() float32array[symbol.species]; // function float32array() species in derived objects in a derived collection object (e.g.
...And 2 more matches

TypedArray.prototype.byteLength - JavaScript
the bytelength accessor property represents the length (in bytes) of a typed array.
...the value is established when a typedarray is constructed and cannot be changed.
... if the typedarray is not specifying an byteoffset or a length, the length of the referenced arraybuffer will be returned.
...And 2 more matches

TypedArray.prototype.length - JavaScript
the length accessor property represents the length (in elements) of a typed array.
...the value is established when a typedarray is constructed and cannot be changed.
... if the typedarray is not specifying an byteoffset or a length, the length of the referenced arraybuffer will be returned.
...And 2 more matches

ParallelArray - Archive of obsolete content
the goal of parallelarray was to enable data-parallelism in web applications.
... the higher-order functions available on parallelarray attempted to execute in parallel, though they may fall back to sequential execution if necessary.
... syntax new parallelarray() new parallelarray([element0, element1, ...]) new parallelarray(arraylength, elementalfunction) parallelarray instances properties length reflects the number of elements in the parallelarray.
... methods map reduce scan scatter filter flatten partition get examples using map in parallel var p = new parallelarray([0, 1, 2, 3, 4]); var m = p.map(function (v) { return v + 1; }); ...

JSIdArray
an array of property ids.
... description jsidarray is used to hold ids for enumerated properties associated with an object.
... use js_idarraylength and js_idarrayget to access the property, and js_destroyidarray to free, or use js::autoidarray as a local variable.
... see also mxr id search for jsidarray js_idarraylength js_idarrayget jsproperty js_enumerate js_destroyidarray js::autoidarray ...

ANGLE_instanced_arrays.drawElementsInstancedANGLE() - Web APIs
the angle_instanced_arrays.drawelementsinstancedangle() method of the webgl api renders primitives from array data like the gl.drawelements() method.
... type a glenum specifying the type of the values in the element array buffer.
... possible values are: gl.unsigned_byte gl.unsigned_short when using the oes_element_index_uint extension: gl.unsigned_int offset a glintptr specifying an offset in the element array buffer.
... examples var ext = gl.getextension('angle_instanced_arrays'); ext.drawelementsinstancedangle(gl.points, 2, gl.unsigned_short, 0, 4); specifications specification status comment angle_instanced_arraysthe definition of 'angle_instanced_arrays' in that specification.

HTMLInputElement.mozGetFileNameArray() - Web APIs
the htmlinputelement.mozgetfilenamearray() method returns an array of the names of the files that were selected by the user on an html input element.
... syntax inputelement.mozgetfilenamearray(alength, afilenames); parameters alength if specified, will receive the number of file names in the returned array.
... afilenames is an array into which the file names are placed.
... example var numfiles = 0; var filearray = {}; inputelement.mozgetfilenamearray(numfiles, filearray); ...

HTMLInputElement.mozSetFileNameArray() - Web APIs
the htmlinputelement.mozsetfilenamearray() method sets the names of the files that selected on an html input element.
... syntax inputelement.mozsetfilenamearray(afilenames, alength); parameters afilenames is the array of file names to apply to the element.
... alength is the number of file names in the array.
... example var filearray = {"/foo/bar.txt", "/foo/foosball.txt"}; inputelement.mozsetfilenamearray(filearray, filearray.length); ...

LockedFile.readAsArrayBuffer() - Web APIs
summary the readasarraybuffer method is used to read the content of the lockedfile object and provide the result of that reading as an arraybuffer.
... in many ways, it performs like the filereader.readasarraybuffer() method.
... syntax var request = instanceoflockedfile.readasarraybuffer(size); parameters size a number representing the number of bytes to read in the file.
...in case of success, the request's result is an arraybuffer representing the data that have been read.

WebGLRenderingContext.disableVertexAttribArray() - Web APIs
the webglrenderingcontext.disablevertexattribarray() method of the webgl api turns the generic vertex attribute array off at a given index position.
... syntax void gl.disablevertexattribarray(index); parameters index a gluint specifying the index of the vertex attribute to disable.
... examples gl.disablevertexattribarray(0); specifications specification status comment webgl 1.0the definition of 'disablevertexattribarray' in that specification.
... opengl es 2.0the definition of 'gldisablevertexattribarray' in that specification.

WebGLVertexArrayObject - Web APIs
the webglvertexarrayobject interface is part of the webgl 2 api, represents vertex array objects (vaos) pointing to vertex array data, and provides names for different sets of vertex data.
... when working with webglvertexarrayobject objects, the following methods are useful: webgl2renderingcontext.createvertexarray() webgl2renderingcontext.deletevertexarray() webgl2renderingcontext.isvertexarray() webgl2renderingcontext.bindvertexarray() webgl 1: the oes_vertex_array_object extension allows you to use vertex array objects in a webgl 1 context.
... examples var vao = gl.createvertexarray(); gl.bindvertexarray(vao); // ...
... specifications specification status comment webgl 2.0the definition of 'webglvertexarrayobject' in that specification.

XRInputSourceArray.keys() - Web APIs
the keys() method in the xrinputsourcearray interface returns a javascript iterator which can then be used to iterate over the keys used to reference each item in the array of input sources.
... syntax xrinputsourcearray.keys(); parameters none.
...for each key, the input is retrieved using the index with array notation: xrsession.inputsources[inputidx].
... specifications specification status comment webxr device apithe definition of 'xrinputsourcearray' in that specification.1 working draft xrinputsourcearray interface [1] see iterator-like methods in information contained in a webidl file for information on how an iterable declaration in an interface definition causes entries(), foreach(), keys(), and values() methods to be exposed from objects that implement the interface.

XRInputSourceArray.length - Web APIs
the read-only length property returns an integer value indicating the number of items in the input source list represented by the xrinputsourcearray object.
... syntax let inputsourcecount = xrinputsourcearray.length; value an integer value indicating the number of xrinputsource objects representing webxr input sources are includled in the array.
... least one controller to play super duper shark jump fest 9000.", [ { label: "shop now", url: "https://www.amazon.com/s?k=vr+controllers" }, { label: "quit" handler: quitgame } ]); } here, if length is 0, a hypothetical showalertdialog() function is called with a prompt string explaining the need for a controller, and an array of objects, each describing a button and what should happen when it's clicked.
... specifications specification status comment webxr device apithe definition of 'xrinputsourcearray.length' in that specification.

ArrayBuffer.prototype.byteLength - JavaScript
the bytelength accessor property represents the length of an arraybuffer in bytes.
...the value is established when the array is constructed and cannot be changed.
... this property returns 0 if this arraybuffer has been detached.
... examples using bytelength var buffer = new arraybuffer(8); buffer.bytelength; // 8 specifications specification ecmascript (ecma-262)the definition of 'arraybuffer.prototype.bytelength' in that specification.

ArrayBuffer.isView() - JavaScript
the arraybuffer.isview() method determines whether the passed value is one of the arraybuffer views, such as typed array objects or a dataview.
... syntax arraybuffer.isview(value) parameters value the value to be checked.
... return value true if the given argument is one of the arraybuffer views; otherwise, false.
... examples using isview arraybuffer.isview(); // false arraybuffer.isview([]); // false arraybuffer.isview({}); // false arraybuffer.isview(null); // false arraybuffer.isview(undefined); // false arraybuffer.isview(new arraybuffer(10)); // false arraybuffer.isview(new uint8array()); // true arraybuffer.isview(new float32array()); // true arraybuffer.isview(new int8array(10).subarray(0, 3)); // true const buffer = new arraybuffer(2); const dv = new dataview(buffer); arraybuffer.isview(dv); // true specifications specification ecmascript (ecma-262)the definition of 'arraybuffer.isview' in that specification.

TypedArray.BYTES_PER_ELEMENT - JavaScript
the typedarray.bytes_per_element property represents the size in bytes of each element in an typed array.
... property attributes of typedarray.bytes_per_element writable no enumerable no configurable no description typedarray objects differ from each other in the number of bytes per element and in the way the bytes are interpreted.
... the bytes_per_element constant contains the number of bytes each element in the given typedarray has.
... examples using bytes_per_element int8array.bytes_per_element; // 1 uint8array.bytes_per_element; // 1 uint8clampedarray.bytes_per_element; // 1 int16array.bytes_per_element; // 2 uint16array.bytes_per_element; // 2 int32array.bytes_per_element; // 4 uint32array.bytes_per_element; // 4 float32array.bytes_per_element; // 4 float64array.bytes_per_element; // 8 specifications specification ecmascript (ecma-262)the definition of 'typedarray.bytes_per_element' in that specification.

TypedArray.prototype.buffer - JavaScript
the buffer accessor property represents the arraybuffer referenced by a typedarray at construction time.
...the value is established when the typedarray is constructed and cannot be changed.
... typedarray is one of the typedarray objects.
... examples using the buffer property var buffer = new arraybuffer(8); var uint16 = new uint16array(buffer); uint16.buffer; // arraybuffer { bytelength: 8 } specifications specification ecmascript (ecma-262)the definition of 'typedarray.prototype.buffer' in that specification.

TypedArray.prototype.byteOffset - JavaScript
the byteoffset accessor property represents the offset (in bytes) of a typed array from the start of its arraybuffer.
...the value is established when a typedarray is constructed and cannot be changed.
... typedarray is one of the typedarray objects.
... examples using the byteoffset property var buffer = new arraybuffer(8); var uint8 = new uint8array(buffer); uint8.byteoffset; // 0 (no offset specified) var uint8 = new uint8array(buffer, 3); uint8.byteoffset; // 3 (as specified when constructing uint8array) specifications specification ecmascript (ecma-262)the definition of 'typedarray.prototype.byteoffset' in that specification.

TypeError: invalid Array.prototype.sort argument - JavaScript
the javascript exception "invalid array.prototype.sort argument" occurs when the argument of array.prototype.sort() isn't either undefined or a function which compares its operands.
... message typeerror: argument is not a function object (edge) typeerror: invalid array.prototype.sort argument (firefox) error type typeerror what went wrong?
... the argument of array.prototype.sort() is expected to be either undefined or a function which compares its operands.

Array.prototype.entries() - JavaScript
the entries() method returns a new array iterator object that contains the key/value pairs for each index in the array.
... syntax array.entries() return value a new array iterator object.
...ndex and element const a = ['a', 'b', 'c']; for (const [index, element] of a.entries()) console.log(index, element); // 0 'a' // 1 'b' // 2 'c' using a for…of loop var a = ['a', 'b', 'c']; var iterator = a.entries(); for (let e of iterator) { console.log(e); } // [0, 'a'] // [1, 'b'] // [2, 'c'] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.entries' in that specification.

Array.prototype.keys() - JavaScript
the keys() method returns a new array iterator object that contains the keys for each index in the array.
... syntax arr.keys() return value a new array iterator object.
... examples key iterator doesn't ignore holes var arr = ['a', , 'c']; var sparsekeys = object.keys(arr); var densekeys = [...arr.keys()]; console.log(sparsekeys); // ['0', '2'] console.log(densekeys); // [0, 1, 2] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.keys' in that specification.

SharedArrayBuffer.prototype.byteLength - JavaScript
the bytelength accessor property represents the length of an sharedarraybuffer in bytes.
...the value is established when the shared array is constructed and cannot be changed.
... examples using bytelength var sab = new sharedarraybuffer(1024); sab.bytelength; // 1024 specifications specification ecmascript (ecma-262)the definition of 'sharedarraybuffer.prototype.bytelength' in that specification.

TypedArray.prototype.entries() - JavaScript
the entries() method returns a new array iterator object that contains the key/value pairs for each index in the array.
... syntax arr.entries() return value a new array iterator object.
... examples iteration using for...of loop var arr = new uint8array([10, 20, 30, 40, 50]); var earray = arr.entries(); // your browser must support for..of loop // and let-scoped variables in for loops for (let n of earray) { console.log(n); } alternative iteration var arr = new uint8array([10, 20, 30, 40, 50]); var earr = arr.entries(); console.log(earr.next().value); // [0, 10] console.log(earr.next().value); // [1, 20] console.log(earr.next().value); // [2, 30] console.log(earr.next().value); // [3, 40] console.log(earr.next().value); // [4, 50] specifications specification ecmascript (ecma-262)the definition of '%typedarray%.prototype.entries()' in that specification.

TypedArray.prototype.keys() - JavaScript
the keys() method returns a new array iterator object that contains the keys for each index in the array.
... syntax arr.keys() return value a new array iterator object.
... examples iteration using for...of loop var arr = new uint8array([10, 20, 30, 40, 50]); var earray = arr.keys(); // your browser must support for..of loop // and let-scoped variables in for loops for (let n of earray) { console.log(n); } alternative iteration var arr = new uint8array([10, 20, 30, 40, 50]); var earr = arr.keys(); console.log(earr.next().value); // 0 console.log(earr.next().value); // 1 console.log(earr.next().value); // 2 console.log(earr.next().value); // 3 console.log(earr.next().value); // 4 specifications specification ecmascript (ecma-262)the definition of '%typedarray%.prototype.keys()' in that specification.

TypedArray.prototype.values() - JavaScript
the values() method returns a new array iterator object that contains the values for each index in the array.
... syntax arr.values() return value a new array iterator object.
... examples iteration using for...of loop var arr = new uint8array([10, 20, 30, 40, 50]); var earray = arr.values(); // your browser must support for..of loop // and let-scoped variables in for loops for (let n of earray) { console.log(n); } alternative iteration var arr = new uint8array([10, 20, 30, 40, 50]); var earr = arr.values(); console.log(earr.next().value); // 10 console.log(earr.next().value); // 20 console.log(earr.next().value); // 30 console.log(earr.next().value); // 40 console.log(earr.next().value); // 50 specifications specification ecmascript (ecma-262)the definition of '%typedarray%.prototype.values()' in that specification.

ANGLE_instanced_arrays.vertexAttribDivisorANGLE() - Web APIs
the angle_instanced_arrays.vertexattribdivisorangle() method of the webgl api modifies the rate at which generic vertex attributes advance when rendering multiple instances of primitives with ext.drawarraysinstancedangle() and ext.drawelementsinstancedangle().
... examples var ext = gl.getextension('angle_instanced_arrays'); ext.vertexattribdivisorangle(0, 2); specifications specification status comment angle_instanced_arraysthe definition of 'angle_instanced_arrays' in that specification.

ArrayBufferView - Web APIs
arraybufferview is a helper type representing any of the following javascript typedarray types: int8array, uint8array, uint8clampedarray, int16array, uint16array, int32array, uint32array, float32array, float64array or dataview.
... specifications specification status comment web idlthe definition of 'arraybufferview' in that specification.

Array.prototype[@@iterator]() - JavaScript
etter + "</li>"; } result alternative iteration var arr = ['a', 'b', 'c', 'd', 'e']; var earr = arr[symbol.iterator](); console.log(earr.next().value); // a console.log(earr.next().value); // b console.log(earr.next().value); // c console.log(earr.next().value); // d console.log(earr.next().value); // e use case for brace notation the use case for this syntax over using the dot notation (array.prototype.values()) is in a case where you don't know what object is going to be ahead of time.
...tprototypeof(it) /* or "symbol.iterator in object.__proto__" or "it[symbol.iterator]" */)) { console.log(it, ' is not an iterable object...'); return; } var iterator = it[symbol.iterator](); // your browser must support for..of loop // and let-scoped variables in for loops // const and var could also be used for (let letter of iterator) { console.log(letter); } } // array logiterable(['a', 'b', 'c']); // a // b // c // string logiterable('abc'); // a // b // c logiterable(123); // 123 " is not an iterable object..." specifications specification ecmascript (ecma-262)the definition of 'array.prototype[@@iterator]()' in that specification.

TypedArray.prototype[@@iterator]() - JavaScript
syntax arr[symbol.iterator]() return value the array iterator function, which is the values() function by default.
... examples iteration using for...of loop var arr = new uint8array([10, 20, 30, 40, 50]); // your browser must support for..of loop // and let-scoped variables in for loops for (let n of arr) { console.log(n); } alternative iteration var arr = new uint8array([10, 20, 30, 40, 50]); var earr = arr[symbol.iterator](); console.log(earr.next().value); // 10 console.log(earr.next().value); // 20 console.log(earr.next().value); // 30 console.log(earr.next().value); // 40 console.log(earr.next().value); // 50 specifications specification ecmascript (ecma-262)the definition of '%typedarray%.prototype[@@iterator]()' in that specification.

XMLHttpRequest.mozResponseArrayBuffer - Web APIs
obsolete since gecko 6 is an arraybuffer response to the request, written as a javascript typed array.

Index - Web APIs
2 angle_instanced_arrays api, reference, webgl, webgl extension the angle_instanced_arrays extension is part of the webgl api and allows to draw the same object, or groups of similar objects multiple times, if they share the same vertex data, primitive count and type.
... 3 angle_instanced_arrays.drawarraysinstancedangle() angle_instanced_arrays, api, method, reference, webgl, webgl extension the angle_instanced_arrays.drawarraysinstancedangle() method of the webgl api renders primitives from array data like the gl.drawarrays() method.
... 4 angle_instanced_arrays.drawelementsinstancedangle() angle_instanced_arrays, api, method, reference, webgl, webgl extension the angle_instanced_arrays.drawelementsinstancedangle() method of the webgl api renders primitives from array data like the gl.drawelements() method.
...And 194 more matches

Indexed collections - JavaScript
this includes arrays and array-like constructs such as array objects and typedarray objects.
... array object an array is an ordered list of values that you refer to with a name and an index.
... for example, consider an array called emp, which contains employees' names indexed by their numerical employee number.
...And 87 more matches

StringView - Archive of obsolete content
the aims of this library are: to create a c-like interface for strings (i.e., an array of character codes — an arraybufferview in javascript) based upon the javascript arraybuffer interface to create a highly extensible library that anyone can extend by adding methods to the object stringview.prototype to create a collection of methods for such string-like objects (since now: stringviews) which work strictly on arrays of numbers rather than on creating new immutable javascript strings to work with unicode encodings other than javascript's default utf-16 domstrings introduction as web applications become more and more powerful, adding features such as audio and video manipulation, access to raw data using websockets, and so forth, it has become clear that there are times when ...
... javascript typed arrays provide a mechanism for accessing raw binary data much more efficiently.
... the stringview constructor is one level above typed arrays.
...And 68 more matches

Index
23 js::autoidarray jsapi reference, reference, référence(2), spidermonkey js::autoidarray takes the ownership of jsidarray, and frees it in destructor by calling js_destroyidarray.
... 25 js::autovaluearray jsapi reference, reference, référence(2), spidermonkey js::autovaluearray<n> holds a rooted array of js::value.
... this is typically used for local variables being passed to function which requires js::handlevaluearray or a pointer to js::value array.
...And 35 more matches

Add to iPhoto
among these are routines for managing cfstring, cfurl, and cfarray objects, among others.
... cfarray the cfarray type is used to create arrays of objects; the objects in the array can be of any type, thanks to a set of callbacks you can provide to handle managing their memory and performing operations such as comparisons.
... the most interesting thing we'll look at here is how to reference the system-provided default callback record, which is exported by core foundation under the name kcftypearraycallbacks.
...And 26 more matches

Working with data
if type is an array type of unspecified length, the following steps are taken: if the value is a size value, a new array of that length is created, with its cells ready to accept values of the same type as those in the specified array.
... this is the same as new arraytype(type.elementtype, value).
... if the type represents a javascript string (that is, an array of jschar characters followed by a null terminator), a copy of that string is created and returned.
...And 24 more matches

A re-introduction to JavaScript (JS tutorial) - JavaScript
and array, which is a special kind of object.
...so the type diagram looks more like this: number string boolean symbol (new in es2015) object function array date regexp null undefined and there are some built-in error types as well.
... for (var i = 0; i < 5; i++) { // will execute 5 times } javascript also contains two other prominent for loops: for...of for (let value of array) { // do something with value } and for...in: for (let property in object) { // do something with object property } the && and || operators use short-circuit logic, which means whether they will execute their second operand is dependent on the first.
...And 24 more matches

jspage - Archive of obsolete content
l,p){if(typeof n=="string"){var o=this.prototype[n];if((n=o)){return j(this,l,n,p); }}for(var m in n){this.alias(m,n[m],l);}return this;};d.implement=function(m,l,o){if(typeof m=="string"){return j(this,m,l,o);}for(var n in m){j(this,n,m[n],l); }return this;};if(c){d.implement(c);}return d;};native.genericize=function(b,c,a){if((!a||!b[c])&&typeof b.prototype[c]=="function"){b[c]=function(){var d=array.prototype.slice.call(arguments); return b.prototype[c].apply(d.shift(),d);};}};native.implement=function(d,c){for(var b=0,a=d.length;b<a;b++){d[b].implement(c);}};native.typize=function(a,b){if(!a.type){a.type=function(c){return($type(c)===b); };}};(function(){var a={array:array,date:date,function:function,number:number,regexp:regexp,string:string};for(var h in a){new native({name:h,initialize:a[...
...h],protect:true}); }var d={"boolean":boolean,"native":native,object:object};for(var c in d){native.typize(d[c],c);}var f={array:["concat","indexof","join","lastindexof","pop","push","reverse","shift","slice","sort","splice","tostring","unshift","valueof"],string:["charat","charcodeat","concat","indexof","lastindexof","match","replace","search","slice","split","substr","substring","tolowercase","touppercase","valueof"]}; for(var e in f){for(var b=f[e].length;b--;){native.genericize(a[e],f[e][b],true);}}})();var hash=new native({name:"hash",initialize:function(a){if($type(a)=="hash"){a=$unlink(a.getclean()); }for(var b in a){this[b]=a[b];}return this;}});hash.implement({foreach:function(b,c){for(var a in this){if(this.hasownproperty(a)){b.call(c,this[a],a,this); }}},getclean:function(){var b={};f...
...or(var a in this){if(this.hasownproperty(a)){b[a]=this[a];}}return b;},getlength:function(){var b=0;for(var a in this){if(this.hasownproperty(a)){b++; }}return b;}});hash.alias("foreach","each");array.implement({foreach:function(c,d){for(var b=0,a=this.length;b<a;b++){c.call(d,this[b],b,this);}}});array.alias("foreach","each"); function $a(b){if(b.item){var a=b.length,c=new array(a);while(a--){c[a]=b[a];}return c;}return array.prototype.slice.call(b);}function $arguments(a){return function(){return arguments[a]; };}function $chk(a){return !!(a||a===0);}function $clear(a){cleartimeout(a);clearinterval(a);return null;}function $defined(a){return(a!=undefined);}function $each(c,b,d){var a=$type(c); ((a=="arguments"||a=="collection"||a=="array")?array:hash).each(c,b,d);}function $empty(){}function ...
...And 23 more matches

Bytecode Descriptions
this is because the spec insists that array indices are strings, whereas for us they are integers.
...the object must be a singleton plainobject or arrayobject.
... the spec requires that an objectliteral or arrayliteral creates a new object every time it's evaluated, so this instruction must not be used anywhere it might be executed more than once.
...And 23 more matches

WebGL constants - Web APIs
rendering primitives constants passed to webglrenderingcontext.drawelements() or webglrenderingcontext.drawarrays() to specify what kind of primitive to render.
... constant name value description points 0x0000 passed to drawelements or drawarrays to draw single points.
... lines 0x0001 passed to drawelements or drawarrays to draw lines.
...And 22 more matches

OS.File for the main thread
let decoder = new textdecoder(); // this decoder can be reused for several reads let promise = os.file.read("file.txt"); // read the complete file as an array promise = promise.then( function onsuccess(array) { return decoder.decode(array); // convert this array to a text } ); this example requires firefox 18 or a more recent version.
...it uses an atomic write to ensure that the file is not modified if, for some reason, the write cannot complete (typically because the computer is turned off, the battery runs out, or the application is stopped.) let encoder = new textencoder(); // this encoder can be reused for several writes let array = encoder.encode("this is some text"); // convert the text to an array let promise = os.file.writeatomic("file.txt", array, // write the array atomically to "file.txt", using as temporary {tmppath: "file.txt.tmp"}); // buffer "file.txt.tmp".
... the following variant does the same thing but will fail if "file.txt" already exists: let encoder = new textencoder(); // this encoder can be reused for several writes let array = encoder.encode("this is some text"); // convert the text to an array let promise = os.file.writeatomic("file.txt", array, // write the array atomically to "file.txt", using as temporary {tmppath: "file.txt.tmp", nooverwrite: true}); // buffer "file.txt.tmp".
...And 21 more matches

Function.prototype.apply() - JavaScript
the apply() method calls a function with a given this value, and arguments provided as an array (or an array-like object).
... syntax func.apply(thisarg, [ argsarray]) parameters thisarg the value of this provided for the call to func.
... argsarray optional an array-like object, specifying the arguments with which func should be called, or null or undefined if no arguments should be provided to the function.
...And 21 more matches

Mozilla DOM Hacking Guide
other browsers allow the history object to be used like an array, e.g.
...the behavior "act as an array" cannot be reflected in the idl itself.
... fortunately, xpconnect provides us with a way to make our class available as an array in javascript.
...And 20 more matches

Shell global objects
variables scriptargs an array that contains arguments passed to js shell.
... getsharedarraybuffer() retrieve the sharedarraybuffer object from the cross-worker mailbox.
...getsharedarraybuffer performs an ordering memory barrier.
...And 20 more matches

String.prototype.split() - JavaScript
the split() method divides a string into an ordered list of substrings, puts these substrings into an array, and returns the array.
... if separator is omitted or does not occur in str, the returned array contains one element consisting of the entire string.
...zero length) string, which appears at the first (or last) position of the returned array.
...And 20 more matches

WebIDL bindings
o* owningnonnull<foo> interface: nullable foo* already_addrefed<foo> foo* refptr<foo> long int32_t int32_t int32_t long long int64_t int64_t int64_t object js::handle<jsobject*> js::mutablehandle<jsobject*> jsobject* octet uint8_t uint8_t uint8_t sequence const sequence<t>& nstarray<t>& (outparam) short int16_t int16_t int16_t unrestricted double double double double unrestricted float float float float unsigned long uint32_t uint32_t uint32_t unsigned long long uint64_t uint64_t uint64_t unsigned short uint16_t uint16_t uint16_t usvstring const nsastri...
..."spidermonkey" interfaces are used to represent objects that are implemented natively by the javascript engine (e.g., typed arrays).
... "spidermonkey" interfaces typed array, array buffer, and array buffer view arguments are represented by the objects in typedarray.h.
...And 18 more matches

WebGLRenderingContext.vertexAttribPointer() - Web APIs
the webglrenderingcontext.vertexattribpointer() method of the webgl api binds the buffer currently bound to gl.array_buffer to a generic vertex attribute of the current vertex buffer object and specifies its layout.
... type a glenum specifying the data type of each component in the array.
... offset a glintptr specifying an offset in bytes of the first component in the vertex attribute array.
...And 18 more matches

Dynamic behavior in Svelte: working with variables and props - Learn web development
we'll take the tasks information from the markup and store it in a todos array.
...find the <h2> heading with an id of list-heading and replace the hardcoded number of active and completed tasks with dynamic expressions: <h2 id="list-heading">{completedtodos} out of {totaltodos} items completed</h2> go to the app, and you should see the "2 out of 3 items completed" message as before, but this time the information is coming from the todos array.
... to prove it, go to that array, and try changing some of the todo object's completed property values, and even add a new todo object.
...And 17 more matches

JNI.jsm
afullyqualifiedname a sig of a typed array or the name of the class that would be used in a signature, but without the surrounding l and ;.
... if it is the sig of a typed array such as '[i' then adeclares must not be declared.
... see the section "working with arrays" to see how this is used to create typed arrays.
...And 17 more matches

Index
23 components.interfacesbyid xpcom:language bindings, xpconnect components.interfacesbyid is a read-only array of classes indexed by iid.
...hashtables may seem like arrays, but there are important differences: 114 how to build an xpcom component in javascript add-ons, extensions, javascript, tutorial, xpcom if you are looking for add-on sdk solution for xpcom javascript components then check out platform/xpcom module first.
... 120 xpcom array guide guide, needscontent, needsmarkupwork, xpcom mozilla has many array classes because each array is optimized for a particular usage pattern.
...And 16 more matches

Multiprocess on Windows
the required steps are as follows: ensure that you generate typelibs for all of your com interfaces; ensure that those interfaces are registered; register any outparams that consist of arrays of interfaces.
... registering outparams that consist of arrays of interfaces recall that one of the limitations of typelibs is that their metadata isn't as rich as oicf metadata.
...without the support for length_is and size_is annotations, the interceptor cannot tell the difference between a scalar outparam and an array outparam.
...And 15 more matches

nsILoginManagerStorage
method overview void addlogin(in nsilogininfo alogin); unsigned long countlogins(in astring ahostname, in astring aactionurl, in astring ahttprealm); void findlogins(out unsigned long count, in astring ahostname, in astring aactionurl, in astring ahttprealm, [retval, array, size_is(count)] out nsilogininfo logins); void getalldisabledhosts([optional] out unsigned long count, [retval, array, size_is(count)] out wstring hostnames); void getallencryptedlogins([optional] out unsigned long count, [retval, array, size_is(count)] out nsilogininfo logins); void getalllogins([optional] out unsigned long count, [retval, array, size_is(count)] out nsilogininfo logins);...
... boolean getloginsavingenabled(in astring ahost); void init(); void initwithfile(in nsifile ainputfile, in nsifile aoutputfile); void modifylogin(in nsilogininfo oldlogin, in nsisupports newlogindata); void removealllogins(); void removelogin(in nsilogininfo alogin); void searchlogins(out unsigned long count, in nsipropertybag matchdata, [retval, array, size_is(count)] out nsilogininfo logins); void setloginsavingenabled(in astring ahost, in boolean isenabled); attributes attribute type description uibusy boolean true when a master password prompt is being shown.
...void findlogins( out unsigned long count, in astring ahostname, in astring aactionurl, in astring ahttprealm, [retval, array, size_is(count)] out nsilogininfo logins ); parameters count return in this parameter the number of matching logins found by the search.
...And 15 more matches

nsIMsgFolder
inherits from: nsisupports method overview void startfolderloading(); void endfolderloading(); void updatefolder(in nsimsgwindow awindow); nsimsgfilterlist getfilterlist(in nsimsgwindow msgwindow); void setfilterlist(in nsimsgfilterlist filterlist); void forcedbclosed(); void delete(); void deletesubfolders(in nsisupportsarray folders, in nsimsgwindow msgwindow); void propagatedelete(in nsimsgfolder folder, in boolean deletestorage,in nsimsgwindow msgwindow); void recursivedelete(in boolean deletestorage, in nsimsgwindow msgwindow); void createsubfolder(in astring foldername, in nsimsgwindow msgwindow); nsimsgfolder addsubfolder(in astring foldername); void createstorageifmi...
...ssing(in nsiurllistener urllistener); void compact(in nsiurllistener alistener, in nsimsgwindow amsgwindow); void compactall(in nsiurllistener alistener, innsimsgwindow amsgwindow,in nsisupportsarray afolderarray, in boolean acompactofflinealso,in nsisupportsarray aofflinefolderarray); void compactallofflinestores(in nsimsgwindow amsgwindow,in nsisupportsarray aofflinefolderarray); void emptytrash(in nsimsgwindow amsgwindow, in nsiurllistener alistener); void rename(in astring name, in nsimsgwindow msgwindow); void renamesubfolders( in nsimsgwindow msgwindow, in nsimsgfolder oldfolder); astring generateuniquesubfoldername(in astring prefix,in nsimsgfolder otherfolder); void updatesummarytotals(in boolean force); vo...
...flag(in unsigned long flag); void clearflag(in unsigned long flag); boolean getflag(in unsigned long flag); void toggleflag(in unsigned long flag); void onflagchange(in unsigned long flag); void setprefflag(); nsimsgfolder getfolderswithflag(in unsigned long flags, in unsigned long resultsize, out unsigned long numfolders); nsisupportsarray getallfolderswithflag(in unsigned long aflag); void getexpansionarray(in nsisupportsarray expansionarray); acstring geturiformsg(in nsimsgdbhdr msghdr); void deletemessages(in nsisupportsarray messages,in nsimsgwindow msgwindow, in boolean deletestorage, in boolean ismove, in nsimsgcopyservicelistener listener, in boolean allowundo); void copymessages(in nsimsg...
...And 15 more matches

context-menu - Archive of obsolete content
matchpattern is a match pattern string or an array of match pattern strings.
... when matchpattern is an array, the context occurs when the menu is invoked on a page whose url matches any of the patterns.
... array an array of any of the other types.
...And 14 more matches

Tree View Details - Archive of obsolete content
example of hierarchical custom view let's put this together into a simple example that takes an array and constructs a tree from it.
...first we'll define two structures to hold the data for the tree, the first will hold a map between parents and the children they contain, and the second will hold an array of the visible items.
... var treeview = { childdata : { solids: ["silver", "gold", "lead"], liquids: ["mercury"], gases: ["helium", "nitrogen"] }, visibledata : [ ["solids", true, false], ["liquids", true, false], ["gases", true, false] ], }; the childdata structure holds an array of the children for each of the three parent nodes.
...And 14 more matches

Places utilities for JavaScript
eislivemarkcontainer(nsinavhistoryresultnode anode); obsolete since gecko 21 boolean nodeislivemarkitem(nsinavhistoryresultnode anode); obsolete since gecko 21 boolean isreadonlyfolder(nsinavhistoryresultnode anode); int getindexofnode(nsinavhistoryresultnode anode); string wrapnode(nsinavhistoryresultnode anode, string atype, nsiuri aoverrideuri); array unwrapnodes(string blob, string atype); nsitransaction maketransaction(string data, string type, nsinavhistoryresultnode container, int index, boolean copy); nsinavhistoryresult getfoldercontents(int afolderid, boolean aexcludeitems, boolean aexpandqueries); boolean showaddbookmarkui(nsiuri auri, string atitle, string adescription, int adefaultinsertionpoint, boolean as...
...string akeyword, string apostdata); boolean showaddlivemarkui(nsiuri afeeduri, nsiuri asiteuri, string atitle, string adescription, int adefaultinsertionpoint, boolean ashowpicker); boolean showminimaladdlivemarkui(nsiuri afeeduri, nsiuri asiteuri, string atitle, string adescription, int adefaultinsertionpoint, boolean ashowpicker); boolean showminimaladdmultibookmarkui(array nsiuri aurilist); boolean showbookmarkproperties(int aid); boolean showfolderproperties(int aid); boolean showaddfolderui(string atitle, int adefaultinsertionpoint, boolean ashowpicker); array object getannotationsforuri(nsiuri auri); array object getannotationsforitem(int aitemid); void setannotationsforuri(nsiuri auri, object aannos); ...
...ed(string aurl); void markpageasfollowedbookmark(string aurl); boolean checkurlsecurity(nsinavhistoryresultnode aurinode); string getquerystringforfolder(int afolderid); string getdescriptionfromdocument(nsidomdocument doc); string setpostdataforbookmark(int aboomarkid, string apostdata); string getpostdataforbookmark(int aboomarkid); array string geturlandpostdataforkeyword(string akeyword); string getitemdescription(int aitemid); nsinavhistoryresultnode getmostrecentbookmarkforuri(nsiuri auri); nsinavhistoryresultnode getmostrecentfolderforfeeduri(nsiuri auri); nsinavhistoryresultnode geturlsforcontainernode(nsinavhistoryresultnode anode); void opencontainernodeintabs(nsinavhistoryresul...
...And 14 more matches

nsIMessenger
identity, in astring amsgfilename); void openattachment(in acstring contenttpe, in acstring url, in acstring displayname, in acstring messageuri, in boolean isexternalattachment); void saveattachment(in acstring contenttpe, in acstring url, in acstring displayname, in acstring messageuri, in boolean isexternalattachment); void saveallattachments(in unsigned long count, [array, size_is(count)] in string contenttypearray, [array, size_is(count)] in string urlarray, [array, size_is(count)] in string displaynamearray, [array, size_is(count)] in string messageuriarray); void saveattachmenttofile(in nsifile afile, in acstring aurl, in acstring amessageuri, in acstring acontenttype, in nsiurllistener alistener); void detachattachment(in string contenttpe, i...
...n string url, in string displayname, in string messageuri, in boolean savefirst, [optional] in boolean withoutwarning); void detachallattachments(in unsigned long count, [array, size_is(count)] in string contenttypearray, [array, size_is(count)] in string urlarray, [array, size_is(count)] in string displaynamearray, [array, size_is(count)] in string messageuriarray, in boolean savefirst, [optional] in boolean withoutwarning); nsilocalfile saveattachmenttofolder(in acstring contenttype, in acstring url, in acstring displayname, in acstring messageuri, in nsilocalfile adestfolder); nsimsgmessageservice messageservicefromuri(in acstring auri); nsimsgdbhdr msghdrfromuri(in acstring auri); acstring getmsguriatnavigatepos(in long apos); acstring g...
...etfolderuriatnavigatepos(in long apos); void getnavigatehistory(out unsigned long acurpos, out unsigned long acount, [array, size_is(acount)] out string ahistory); note: prior to gecko 8.0, all references to nsidomwindow used in this interface were nsidomwindow.
...And 14 more matches

Spread syntax (...) - JavaScript
spread syntax (...) allows an iterable such as an array expression or string to be expanded in places where zero or more arguments (for function calls) or elements (for array literals) are expected, or an object expression to be expanded in places where zero or more key-value pairs (for object literals) are expected.
... syntax for function calls: myfunction(...iterableobj); for array literals or strings: [...iterableobj, '4', 'five', 6]; for object literals (new in ecmascript 2018): let objclone = { ...obj }; rest syntax (parameters) rest syntax looks exactly like spread syntax.
...spread syntax "expands" an array into its elements, while rest syntax collects multiple elements and "condenses" them into a single element.
...And 14 more matches

page-mod - Archive of obsolete content
mozilla.org", contentscript: 'window.alert("page matches ruleset");' }); you can modify the document in your script: var pagemod = require("sdk/page-mod"); pagemod.pagemod({ include: "*.mozilla.org", contentscript: 'document.body.innerhtml = ' + ' "<h1>page matches ruleset</h1>";' }); you can supply the content script(s) in one of two ways: as a string literal, or an array of string literals, assigned to the contentscript option, as above as separate files supplied in your add-on's "data" directory.
...list of workers attached to a page-mod: var workers = []; var pagemod = require("sdk/page-mod").pagemod({ include: ['*'], contentscriptwhen: 'ready', contentscriptfile: data.url('pagemod.js'), onattach: function(worker) { workers.push(worker); } }); you can remove workers when they are no longer valid by listening to detach: var workers = []; function detachworker(worker, workerarray) { var index = workerarray.indexof(worker); if(index != -1) { workerarray.splice(index, 1); } } var pagemod = require("sdk/page-mod").pagemod({ include: ['*'], contentscriptwhen: 'ready', contentscriptfile: data.url('pagemod.js'), onattach: function(worker) { workers.push(worker); worker.on('detach', function () { detachworker(this, workers); }); } }); clea...
... parameters options : object required options: name: include type: string, regexp, or array of (string or regexp) a match pattern string or an array of match pattern strings.
...And 13 more matches

places/bookmarks - Archive of obsolete content
th properties // such as `updated` and `id`), as well as the initial input // item as `inputitem` console.log(saved.title === inputitem.title); // true console.log(saved !== inputitem); // true console.log(inputitem === bookmark); // true }).on("end", function (saveditems, inputitems) { // similar to "data" events, except "end" is an aggregate of // all progress events, with ordered arrays as `saveditems` // and `inputitems` }); creating several bookmarks with a new group let { bookmark, group, save } = require("sdk/places/bookmarks"); let group = group({ title: "guitars" }); let bookmarks = [ bookmark({ title: "ran", url: "http://ranguitars.com", group: group }), bookmark({ title: "ibanez", url: "http://ibanez.com", group: group }), bookmark({ title: "esp", url: "http:...
...//espguitars.com", group: group }) ]; // save `bookmarks` array -- notice we don't have `group` in the array, // although it needs to be saved since all bookmarks are children // of `group`.
... save(bookmarks).on("data", function (saved, input) { // a data event is called once for each item saved, as well // as implicit items, like `group` console.log(input === group || ~bookmarks.indexof(input)); // true }).on("end", function (saves, inputs) { // like the previous example, the "end" event returns an // array of all of our updated saves.
...And 13 more matches

AddonManager
callbacks installcallback() a callback that is passed a single addoninstall void installcallback( in addoninstall install ) parameters install the addoninstall passed back from the asynchronous request installlistcallback() a callback that is passed an array of addoninstalls void installlistcallback( in addoninstall installs[] ) parameters installs the array of addoninstalls passed back from the asynchronous request addoncallback() a callback that is passed a single addon void addoncallback( in addon addon ) parameters addon the addon passed back from the asynchronous request.
... addonlistcallback() a callback that is passed an array of addons void addonlistcallback( in addon addons[] ) parameters addons the array of addons passed back from the asynchronous request constants addoninstall states constant description state_available an install that is waiting to be started.
... getstartupchanges() returns an array of add-on ids that changed for a given startup change type.
...And 13 more matches

JIT Optimization Strategies
for example, in the following code: var constants = {}; constants.n = 100; function testarray(array) { for (var i = 0; i < array.length; i++) { if (array[i] > constants.n) return true; } return false; } will have the loop compiled into the following when testarray gets hot.
... for (var i = 0; i < array.length; i++) { if (array[i] > 100) return true; } when this optimization is successful, property access is eliminated entirely and replaced with an inline constant.
... getelement getelem_typedobject attempts to optimized element accesses on array typed objects.
...And 13 more matches

nsILoginManager
rch(in astring asearchstring, in nsiautocompleteresult apreviousresult, in nsidomhtmlinputelement aelement); unsigned long countlogins(in astring ahostname, in astring aactionurl, in astring ahttprealm); boolean fillform(in nsidomhtmlformelement aform); void findlogins(out unsigned long count, in astring ahostname, in astring aactionurl, in astring ahttprealm, [retval, array, size_is(count)] out nsilogininfo logins); void getalldisabledhosts([optional] out unsigned long count, [retval, array, size_is(count)] out wstring hostnames); void getalllogins([optional] out unsigned long count, [retval, array, size_is(count)] out nsilogininfo logins); boolean getloginsavingenabled(in astring ahost); void modifylogin(in nsilogininfo oldlogin,...
... in nsisupports newlogindata); void removealllogins(); void removelogin(in nsilogininfo alogin); void searchlogins(out unsigned long count, in nsipropertybag matchdata, [retval, array, size_is(count)] out nsilogininfo logins); void setloginsavingenabled(in astring ahost, in boolean isenabled); methods addlogin() stores a new login in the login manager.
... void findlogins( out unsigned long count, in astring ahostname, in astring aactionurl, in astring ahttprealm, [retval, array, size_is(count)] out nsilogininfo logins ); parameters count the number of elements in the returned array.
...And 13 more matches

SubtleCrypto.unwrapKey() - Web APIs
wrappedkey is an arraybuffer containing the wrapped key in the given format.
... keyusages is an array indicating what can be done with the key.
... possible values of the array are: encrypt: the key may be used to encrypt messages.
...And 13 more matches

Grammar and types - JavaScript
for example, the following code executes the function myfunction because the myarray element is undefined: var myarray = []; if (!myarray[0]) myfunction(); the undefined value converts to nan when used in numeric context.
... const my_object = {'key': 'value'}; my_object.key = 'othervalue'; also, the contents of an array are not protected, so the following statement is executed without problems.
... const my_array = ['html','css']; my_array.push('javascript'); console.log(my_array); //logs ['html','css','javascript']; data structures and types data types the latest ecmascript standard defines eight data types: seven data types that are primitives: boolean.
...And 13 more matches

Index - Archive of obsolete content
124 util/array helper functions for working with arrays.
... 2003 archived javascript reference archive, javascript, obsolete, overview obsolete javascript features and unmaintained docs 2004 array comprehensions javascript, language feature, non-standard, obsolete, operator, reference the array comprehension syntax was a javascript expression which allowed you to quickly assemble a new array based on an existing one.
... 2005 array.observe() array, javascript, method, obsolete the array.observe() method was used for asynchronously observing changes to arrays, similar to object.observe() for objects.
...And 12 more matches

JS::AutoVectorRooter
this article covers features introduced in spidermonkey 17 base class that roots an internal variable-size array of type t.
... syntax js::autovectorrooter(jscontext* cx); methods method description size_t length() const returns the length of the array.
... bool empty() const determines if the array is empty (length is zero).
...And 12 more matches

nsIMsgDatabase
g size); nsimsgdbhdr getmsghdrforkey(in nsmsgkey key); nsimsgdbhdr getmsghdrformessageid(in string messageid); boolean containskey(in nsmsgkey key); nsimsgdbhdr createnewhdr(in nsmsgkey key); void addnewhdrtodb(in nsimsgdbhdr newhdr, in boolean notify); nsimsgdbhdr copyhdrfromexistinghdr(in nsmsgkey key, in nsimsgdbhdr existinghdr, in boolean addhdrtodb); void listallkeys(in nsmsgkeyarrayref outputkeys); native code only!
...stigator); void markreplied(in nsmsgkey key, in boolean breplied, in nsidbchangelistener instigator); void markforwarded(in nsmsgkey key, in boolean bforwarded, in nsidbchangelistener instigator); void markhasattachments(in nsmsgkey key, in boolean bhasattachments, in nsidbchangelistener instigator); void markthreadread(in nsimsgthread thread, in nsidbchangelistener instigator, in nsmsgkeyarrayptr thosemarked); native code only!
...readwatched(in nsimsgthread thread, in nsmsgkey threadkey, in boolean bwatched, in nsidbchangelistener instigator); void markheaderkilled(in nsimsgdbhdr msg, in boolean bignored, in nsidbchangelistener instigator); boolean isread(in nsmsgkey key); boolean isignored(in nsmsgkey key); boolean ismarked(in nsmsgkey key); boolean hasattachments(in nsmsgkey key); void markallread(in nsmsgkeyarrayptr thosemarked); native code only!
...And 12 more matches

SubtleCrypto.importKey() - Web APIs
keydata is an arraybuffer, a typedarray, a dataview, or a jsonwebkey object containing the key in the given format.
... keyusages is an array indicating what can be done with the key.
... possible array values are: encrypt: the key may be used to encrypt messages.
...And 12 more matches

React interactivity: Events and state - Learn web development
usestate() returns these two things, so we are using array destructuring to capture them both in separate variables.
...there’s one problem however: we can’t just pass the name argument of addtask() into settasks, because tasks is an array of objects and name is a string.
... if we tried to do this, the array would be replaced with the string.
...And 11 more matches

Advanced Svelte: Reactivity, lifecycle, accessibility - Learn web development
we will learn how to deal with reactivity issues related to updating objects and arrays.
... reactivity gotchas: updating objects and arrays to see what's happening we can log the todos array from the checkalltodos() function to the console.
... you'll notice that the array is successfully updated every time you press the button (the todo objects' completed properties are toggled between true and false), but svelte is not aware of that.
...And 11 more matches

XPCOMUtils.jsm
create an array of component constructors.
...}, // [optional] an array of categories to register this component in.
... _xpcom_categories: [{ // each object in the array specifies the parameters to pass to // nsicategorymanager.addcategoryentry().
...And 11 more matches

AudioWorkletProcessor.process - Web APIs
therefore, you must always check the size of the sample array rather than assuming a particular size.
... syntax var isactivelyprocessing = audioworkletprocessor.process(inputs, outputs, parameters); parameters inputs an array of inputs connected to the node, each item of which is, in turn, an array of channels.
... each channel is a float32array containing 128 samples.
...And 11 more matches

Background audio processing using AudioWorklet - Web APIs
fundamentally, the audio for a single audio channel (such as the left speaker or the subwoofer, for example) is represented as a float32array whose values are the individual audio samples.
... by specification, each block of audio your process() function receives contains 128 frames (that is, 128 samples for each channel), but it is planned that this value will change in the future, and may in fact vary depending on circumstances, so you should always check the array's length rather than assuming a particular size.
...so each input is, in turn, an array of channels.
...And 11 more matches

Visualizations with Web Audio API - Web APIs
these methods copy data into a specified array, so you need to create a new array to receive the data before invoking one.
... the first one produces 32-bit floating point numbers, and the second and third ones produce 8-bit unsigned integers, therefore a standard javascript array won't do — you need to use a float32array or uint8array array, depending on what data you are handling.
...we return the analysernode.frequencybincount value, which is half the fft, then call uint8array() with the frequencybincount as its length argument — this is how many data points we will be collecting, for that fft size.
...And 11 more matches

Atomics - JavaScript
they are used with sharedarraybuffer and arraybuffer objects.
... static methods atomics.add() adds the provided value to the existing value at the specified index of the array.
... atomics.and() computes a bitwise and on the value at the specified index of the array with the provided value.
...And 11 more matches

util/collection - Archive of obsolete content
usage a collection is ordered, like an array, but its items are unique, like a set.
... globals constructors collection([array]) creates a new collection.
... the collection is backed by an array.
...And 10 more matches

WebRequest.jsm
opt_extrainfospec array of string the optional opt_extrainfospec argument lets you pass extra instructions for the handling of events.
... types array of strings.
... an array of resource types.
...And 10 more matches

Parser API
interface arrayexpression <: expression { type: "arrayexpression"; elements: [ expression | null ]; } an array expression.
... interface comprehensionexpression <: expression { type: "comprehensionexpression"; body: expression; blocks: [ comprehensionblock | comprehensionif ]; filter: expression | null; } an array comprehension.
... the blocks array corresponds to the sequence of for and for each blocks.
...And 10 more matches

IAccessible2
extendedstates() returns the extended states (array of strings).
...refer to @ref _arrayconsideration "special consideration when using arrays" for more details.
... extendedstates this array is allocated by the server.
...And 10 more matches

nsIProcess
to create an instance, use: var process = components.classes["@mozilla.org/process/util;1"] .createinstance(components.interfaces.nsiprocess); method overview void init(in nsifile executable); void initwithpid(in unsigned long pid); obsolete since gecko 1.9.2 void kill(); void run(in boolean blocking, [array, size_is(count)] in string args, in unsigned long count); void runasync([array, size_is(count)] in string args, in unsigned long count, [optional] in nsiobserver observer, [optional] in boolean holdweak); void runw(in boolean blocking, [array, size_is(count)] in wstring args, in unsigned long count); void runwasync([array, size_is(count)] in wstring args, in unsigned ...
... void run( in boolean blocking, [array, size_is(count)] in string args, in unsigned long count ); parameters blocking if true, this method will block until the process terminates; if false, the method returns immediately.
... args an array of count arguments, using the native character set, to be passed to the executable on its command line.
...And 10 more matches

TextEncoder.prototype.encodeInto() - Web APIs
the textencoder.prototype.encodeinto() method takes a usvstring to encode and a destination uint8array to put resulting utf-8 encoded text into, and returns a dictionary object indicating the progress of the encoding.
... syntax b1 = encoder.encodeinto(string, uint8array); parameters string is a usvstring containing the text to encode.
... uint8array is a uint8array object instance to place the resulting utf-8 encoded text into.
...And 10 more matches

WindowOrWorkerGlobalScope.setTimeout() - Web APIs
*/ ) { var aargs = array.prototype.slice.call(arguments, 2); return __nativest__(vcallback instanceof function ?
...*/ ) { var aargs = array.prototype.slice.call(arguments, 2); return __nativesi__(vcallback instanceof function ?
... see the following example: myarray = ['zero', 'one', 'two']; myarray.mymethod = function (sproperty) { alert(arguments.length > 0 ?
...And 10 more matches

Dehydra Object Reference - Archive of obsolete content
.attributes array of objects attributes of the type or declaration.
... each member of the array has the following properties: { name: string, value: string or number, if applicable } see an example on enforcing final classes.
... .assign array of variable objects this variable is the lhs of an assignment.
...And 9 more matches

Working with JSON - Learn web development
you can include the same basic data types inside json as you can in a standard javascript object — strings, numbers, arrays, booleans, and other object literals.
...for example: superheroes.hometown superheroes['active'] to access data further down the hierarchy, you simply have to chain the required property names and array indexes together.
... members contains an array populated by objects.
...And 9 more matches

CustomizableUI.jsm
void removewidgetfromarea(awidgetid); void movewidgetwithinarea(awidgetid, aposition); void ensurewidgetplacedinwindow(awidgetid, awindow); void beginbatchupdate(); void endbatchupdate(aforcedirty); widgetgroupwrapper createwidget(awidgetspecification); void destroywidget(awidgetid); widgetgroupwrapper getwidget(awidgetid); array getunusedwidgets(awindow); array getwidgetidsinarea(aareaid); array getwidgetsinarea(aareaid); string getareatype(aareaid); domelement getcustomizetargetforarea(aareaid, awindow); void reset(); void undoreset(); void removeextratoolbar(); object getplacementofwidget(awidgetid); bool iswidgetremovable(awidgetnodeorwid...
... defaultplacements an array of widget ids making up the default contents of the area.
... getunusedwidgets() get an array of widget wrappers for all the widgets which are currently not in any area (so which are in the palette).
...And 9 more matches

mozIStorageStatement
inherits from: mozistoragevaluearray last changed in gecko 1.9.2 (firefox 3.6 / thunderbird 3.1 / fennec 1.0) for an introduction on how to use this interface, see the storage overview document.
...g getparametername(in unsigned long aparamindex); unsigned long getparameterindex(in autf8string aname); autf8string getcolumnname(in unsigned long acolumnindex); unsigned long getcolumnindex(in autf8string aname); void reset(); astring escapestringforlike(in astring avalue, in wchar aescapechar); void bindparameters(in mozistoragebindingparamsarray aparameters); mozistoragebindingparamsarray newbindingparamsarray(); void bindutf8stringparameter(in unsigned long aparamindex, in autf8string avalue); void bindstringparameter(in unsigned long aparamindex, in astring avalue); void binddoubleparameter(in unsigned long aparamindex, in double avalue); void bindint32parameter(in unsigned long aparaminde...
...x, in long avalue); void bindint64parameter(in unsigned long aparamindex, in long long avalue); void bindnullparameter(in unsigned long aparamindex); void bindblobparameter(in unsigned long aparamindex, [array,const,size_is(avaluesize)] in octet avalue, in unsigned long avaluesize); mozistoragependingstatement executeasync(mozistoragestatementcallback acallback); boolean executestep(); boolean step(); void execute(); attributes attribute type description columncount unsigned long number of columns returned.
...And 9 more matches

nsIAccessibleTable
tcolumnatindex in gecko 1.9.2 void getrowandcolumnindicesat(in long cellindex, out long rowindex, out long columnindex); astring getrowdescription(in long rowindex); long getrowextentat(in long row, in long column); long getrowindexat(in long cellindex); note: renamed from getrowatindex in gecko 1.9.2 void getselectedcellindices(out unsigned long cellsarraysize, [retval, array, size_is(cellsarraysize)] out long cellsarray); note: renamed from getselectedcells in gecko 1.9.2 void getselectedcolumnindices(out unsigned long columnsarraysize, [retval, array, size_is(columnsarraysize)] out long columnsarray); note: renamed from getselectedcolumns in gecko 1.9.2 void getselectedrowindices(out unsigned long rowsarraysize, [retval, array, ...
...size_is(rowsarraysize)] out long rowsarray); note: renamed from getselectedrows in gecko 1.9.2 boolean iscellselected(in long rowindex, in long columnindex); boolean iscolumnselected(in long columnindex); boolean isprobablyforlayout(); boolean isrowselected(in long rowindex); void selectcolumn(in long columnindex); void selectrow(in long rowindex); void unselectcolumn(in long columnindex); void unselectrow(in long rowindex); attributes attribute type description caption nsiaccessible the caption accessible for the table.
... note: renamed from selectedcellscount in gecko 1.9.2 selectedcells nsiarray an array of selected cells.
...And 9 more matches

nsIAnnotationService
signed short aexpiration); void setpageannotationdouble(in nsiuri auri, in autf8string aname, in double avalue, in long aflags, in unsigned short aexpiration); void setitemannotationdouble(in long long aitemid, in autf8string aname, in double avalue, in long aflags, in unsigned short aexpiration); void setpageannotationbinary(in nsiuri auri, in autf8string aname,[const, array, size_is(adatalen)] in octet adata, in unsigned long adatalen, in autf8string amimetype, in long aflags, in unsigned short aexpiration); void setitemannotationbinary(in long long aitemid, in autf8string aname,[const, array, size_is(adatalen)] in octet adata, in unsigned long adatalen, in autf8string amimetype, in long aflags, in unsigned short aexpiration); nsivariant getpageann...
... long long getpageannotationint64(in nsiuri auri, in autf8string aname); long long getitemannotationint64(in long long aitemid, in autf8string aname); double getpageannotationdouble(in nsiuri auri, in autf8string aname); double getitemannotationdouble(in long long aitemid, in autf8string aname); void getpageannotationbinary(in nsiuri auri, in autf8string aname,[array, size_is(adatalen)] out octet adata, out unsigned long adatalen, out autf8string amimetype); void getitemannotationbinary(in long long aitemid, in autf8string aname,[array, size_is(adatalen)] out octet adata, out unsigned long adatalen, out autf8string amimetype); void getpageannotationinfo(in nsiuri auri, in autf8string aname, out print32 aflags, out unsigned short aexpiration,...
..., in autf8string aname, out long aflags, out unsigned short aexpiration, out autf8string amimetype, out unsigned short atype); pruint16 getpageannotationtype(in nsiuri auri, in autf8string aname); pruint16 getitemannotationtype(in long long aitemid, in autf8string aname); void getpageswithannotation(in autf8string name, [optional] out unsigned long resultcount, [retval, array, size_is(resultcount)] out nsiuri results); void getitemswithannotation(in autf8string name, [optional] out unsigned long resultcount, [retval, array, size_is(resultcount)] out long long results); void getpageannotationnames(in nsiuri auri, [optional] out unsigned long count, [retval, array, size_is(count)] out nsivariant result); void getitemannotationnames(in long lon...
...And 9 more matches

nsIVariant
nsresult getasarray(out pruint16 type, out nsiid iid, out pruint32 count, out voidptr ptr); violates the xpcom interface guidelines astring getasastring(); native code only!
...arrays and interface pointers cannot be converted to a string.
... violates the xpcom interface guidelines getasarray() nsresult getasarray( out pruint16 type, out nsiid iid, out pruint32 count, out voidptr ptr ); parameters type the type of the array elements.
...And 9 more matches

Debugger.Script - Firefox Developer Tools
getalloffsets() if the instance refers to a jsscript, return an arrayl describing the relationship between bytecode instruction offsets and source code positions in this script.l is sparse, and indexed by source line number.
...if there is code forline, then l[line] is an array of offsets of byte code instructions that are entry points to that line.
... a[i] = i*i; calling getalloffsets() on that code might yield an array like this: [[0], [5, 20], , [10]] this array indicates that: the first line’s code starts at offset 0 in the script; the for statement head has two entry points at offsets 5 and 20 (for the initialization, which is performed only once, and the loop test, which is performed at the start of each iteration); the third line has no code; and the fourth line begins at offset 10.
...And 9 more matches

Debugger - Firefox Developer Tools
arguments an array of strings, representing the arguments substituted into the error message.
... getdebuggees() return an array of distinct debugger.object instances whose referents are all the global objects this debugger instance is debugging.
... since debugger instances don’t hold strong references to their debuggee globals, if a debuggee global is otherwise unreachable, it may be dropped at any moment from the array this method returns.
...And 9 more matches

WebGL2RenderingContext - Web APIs
webgl2renderingcontext.getbuffersubdata() reads data from a buffer and writes them to an arraybuffer or sharedarraybuffer.
... webgl2renderingcontext.texstorage3d() specifies all levels of a three-dimensional texture or two-dimensional array texture.
... webgl2renderingcontext.vertexattribipointer() specifies integer data formats and locations of vertex attributes in a vertex attributes array.
...And 9 more matches

Destructuring assignment - JavaScript
the destructuring assignment syntax is a javascript expression that makes it possible to unpack values from arrays, or properties from objects, into distinct variables.
...(b); // 20 [a, b, ...rest] = [10, 20, 30, 40, 50]; console.log(a); // 10 console.log(b); // 20 console.log(rest); // [30, 40, 50] ({ a, b } = { a: 10, b: 20 }); console.log(a); // 10 console.log(b); // 20 // stage 4(finished) proposal ({a, b, ...rest} = {a: 10, b: 20, c: 30, d: 40}); console.log(a); // 10 console.log(b); // 20 console.log(rest); // {c: 30, d: 40} description the object and array literal expressions provide an easy way to create ad hoc packages of data.
... examples array destructuring basic variable assignment const foo = ['one', 'two', 'three']; const [red, yellow, green] = foo; console.log(red); // "one" console.log(yellow); // "two" console.log(green); // "three" assignment separate from declaration a variable can be assigned its value via destructuring separate from the variable's declaration.
...And 9 more matches

Using the WebAssembly JavaScript API - WebAssembly
these methods are easier than their non-streaming counterparts, because they can turn the byte code directly into module/instance instances, cutting out the need to separately put the response into an arraybuffer.
... these methods don't directly access the byte code, so require an extra step to turn the response into an arraybuffer before compiling/instantiating the wasm module.
... the equivalent code would look like this: fetch('simple.wasm').then(response => response.arraybuffer() ).then(bytes => webassembly.instantiate(bytes, importobject) ).then(results => { results.instance.exports.exported_func(); }); viewing wasm in developer tools in firefox 54+, the developer tool debugger panel has functionality to expose the text representation of any wasm code included in a web page.
...And 9 more matches

JXON - Archive of obsolete content
onode.nodevalue.trim() : onode.nodevalue; } // nodetype is "text" (3) or "cdatasection" (4) else if (onode.nodetype === 1 && !onode.prefix) { // nodetype is "element" (1) sprop = onode.nodename.tolowercase(); vcontent = new jxontree(onode); if (this.hasownproperty(sprop)) { if (this[sprop].constructor !== array) { this[sprop] = [this[sprop]]; } this[sprop].push(vcontent); } else { this[sprop] = vcontent; nlength++; } } } this.keyvalue = parsetext(scollectedtxt); } else { this.keyvalue = null; } if (oparentnode.hasattributes && oxmlparent.hasattributes()) { var oattrib; this.keyattributes = {}; for (nattrlen; nattrlen < oxmlparent.attributes.length; nattrle...
...onode.nodevalue.trim() : onode.nodevalue; } else if (onode.nodetype === 1 && !onode.prefix) { sprop = onode.nodename.tolowercase(); vcontent = new jxontree(onode); if (this.hasownproperty(sprop)) { if (this[sprop].constructor !== array) { this[sprop] = [this[sprop]]; } this[sprop].push(vcontent); } else { this[sprop] = vcontent; } } } if (scollectedtxt) { this.keyvalue = parsetext(scollectedtxt); } } if (oparentnode.hasattributes && oxmlparent.hasattributes()) { var oattrib; for (var nattrib = 0; nattrib < oxmlparent.attributes.length; nattrib++) { oattrib = oxmlparent.attribute...
...e.nodetype === 3) { scollectedtxt += onode.nodevalue.trim(); } /* nodetype is "text" (3) */ else if (onode.nodetype === 1 && !onode.prefix) { /* nodetype is "element" (1) */ if (nlength === 0) { vresult = {}; } sprop = onode.nodename.tolowercase(); vcontent = getjxontree(onode); if (vresult.hasownproperty(sprop)) { if (vresult[sprop].constructor !== array) { vresult[sprop] = [vresult[sprop]]; } vresult[sprop].push(vcontent); } else { vresult[sprop] = vcontent; nlength++; } } } } if (scollectedtxt) { nlength > 0 ?
...And 8 more matches

LiveConnect Overview - Archive of obsolete content
javascript to java communication when you refer to a java package or class, or work with a java object or array, you use one of the special liveconnect objects.
... table 9.1 the liveconnect objects object description javaarray a wrapped java array, accessed from within javascript code.
...for example, you can use the following: var mystring = new java.lang.string("hello world"); instead of the longer version: var mystring = new packages.java.lang.string("hello world"); working with java arrays when any java method creates an array and you reference that array in javascript, you are working with a javaarray.
...And 8 more matches

Looping code - Learn web development
this shows a loop is used to iterate over the items in an array and do something with each of them — a very common pattern in javascript.
... the loop has been told to run until i is no longer smaller than the length of the cats array.
... note: we have made the condition i < cats.length, not i <= cats.length, because computers count from 0, not 1 — we are starting i at 0, and going up to i = 4 (the index of the last array item).
...And 8 more matches

Dict.jsm
method overview dict copy(); boolean del(string akey); object get(string akey, [optional] object adefault); boolean has(string akey); array listitems(); array listkeys(); array listvalues(); void set(string akey, object avalue); string tojson(); string tostring(); properties attribute type description count number the number of items in the dictionary.
... items iterator returns an iterator over all of the items in the dictionary; each item is returned as a pair (a two-element array) with the first element being the key and the second being the value.
... listitems() returns an array of the key/value pairs in the dictionary.
...And 8 more matches

nss tech note1
the number of required templates is determined by the type of the first template.when multiple templates are required, the pointer must point to a null-terminated array of templates.
...a "null template" is a template that is all zeros, having a zero kind.† the term "null-terminated array", as used throughout this document, means an array of templates, the last of which is a null template.
...if kind is an asn.1 sequence tag (sec_asn1_sequence), then you must specify additional templates in a null-terminated array to define the content of the of the asn.1 sequence.
...And 8 more matches

nss tech note5
<big>(for example)</big> choose a slot on which to to do the operation pk11slotinfo* slot = pk11_getbestslot(ciphermech, null); or pk11slotinfo* slot = pk11_getinternalkeyslot(); /* alwys returns internal slot, may not be optimal */ prepare the key if using a raw key /* turn the raw key into a secitem */ secitem keyitem; keyitem.data = /* ptr to an array of key bytes */ keyitem.len = /* length of the array of key bytes */ /* turn the secitem into a key object */ pk11symkey* symkey = pk11_importsymkey(slot, ciphermech, pk11_originunwrap, cka_encrypt, &keyitem, null); if generating the key - see section generate a s...
...if not using cbc mode, just pass a null iv parm to pk11_paramfromiv function secitem ivitem; ivitem.data = /* ptr to an array of iv bytes */ ivitem.len = /* length of the array of iv bytes */ secitem *secparam = pk11_paramfromiv(ciphermech, &ivitem);</big> <big>now encrypt and decrypt using the key and parameter setup in above steps</big> create encryption context pk11context* enccontext = pk11_createcontextbysymkey(ciphermech, cka_encrypt or cka_decrypt, ...
...md5 <big>(for example)</big> choose a slot on which to to do the operation pk11slotinfo* slot = pk11_getbestslot(digestmech, null); or pk11slotinfo* slot = pk11_getinternalkeyslot(); /* always returns int slot, may not be optimal */ prepare the key if using a raw key /* turn the raw key into a secitem */ secitem keyitem; keyitem.data = /* ptr to an array of key bytes */ keyitem.len = /* length of the array of key bytes */ /* turn the secitem into a key object */ pk11symkey* symkey = pk11_importsymkey(slot, digestmech, pk11_originunwrap, cka_digest, &keyitem, null); if generating the key - see section generate a sy...
...And 8 more matches

JSAPI User Guide
spidermonkey provides a few core javascript data types—numbers, strings, arrays, objects, and so on—and a few methods, such as array.push.
...the application starts out by creating an object and populating it with the standard javascript classes, like array and object.
... jsautocompartment ac(cx, global); // populate the global object with the standard globals, like object and // array.
...And 8 more matches

nsIBrowserSearchService
void addengine(in astring engineurl, in long datatype, in astring iconurl, in boolean confirm, [optional] in nsisearchinstallcallback callback); void addenginewithdetails(in astring name, in astring iconurl, in astring alias, in astring description, in astring method, in astring url); void getdefaultengines([optional] out unsigned long enginecount, [retval, array, size_is(enginecount)] out nsisearchengine engines); nsisearchengine getenginebyalias(in astring alias); nsisearchengine getenginebyname(in astring aenginename); void getengines([optional] out unsigned long enginecount, [retval, array, size_is(enginecount)] out nsisearchengine engines); void getvisibleengines([optional] out unsigned ...
...long enginecount, [retval, array, size_is(enginecount)] out nsisearchengine engines); void init([optional] in nsibrowsersearchinitobserver observer); void moveengine(in nsisearchengine engine, in long newindex); void removeengine(in nsisearchengine engine); void restoredefaultengines(); attributes attribute type description currentengine nsisearchengine the currently active search engine.
... getdefaultengines() returns an array of all default search engines.
...And 8 more matches

nsIDOMWindowUtils
adelta, in long amodifiers); void sendtextevent(in astring acompositionstring, in long afirstclauselength, in unsigned long afirstclauseattr, in long asecondclauselength, in unsigned long asecondclauseattr, in long athirdclauselength, in unsigned long athirdclauseattr, in long acaretstart, in long acaretlength); obsolete since gecko 26 boolean sendtouchevent(in astring atype, [array, size_is(count)] in pruint32 aidentifiers, [array, size_is(count)] in print32 axs, [array, size_is(count)] in print32 ays, [array, size_is(count)] in pruint32 arxs, [array, size_is(count)] in pruint32 arys, [array, size_is(count)] in float arotationangles, [array, size_is(count)] in float aforces, in pruint32 count, in long amodifiers, [optional] in boolean aignorerootscrollframe); void...
... query_text_rect_array 3209 selection_set_flag_use_native_line_break 0x0000 one of values of aadditionalflags of sendselectionsetevent().
... boolean sendtouchevent( in astring atype, [array, size_is(count)] in pruint32 aidentifiers, [array, size_is(count)] in print32 axs, [array, size_is(count)] in print32 ays, [array, size_is(count)] in pruint32 arxs, [array, size_is(count)] in pruint32 arys, [array, size_is(count)] in float arotationangles, [array, size_is(count)] in float aforces, in pruint32 count, in long amodifiers, [optional] in boolean aignorerootscrollfram...
...And 8 more matches

nsINavBookmarksService
aindex); note: renamed from createcontainer in gecko 1.9 obsolete since gecko 13.0 long long createfolder(in long long aparentfolder, in autf8string name, in long index); void endupdatebatch(); obsolete since gecko 1.9 void exportbookmarkshtml(in nsifile file); obsolete since gecko 1.9 nsiuri getbookmarkedurifor(in nsiuri auri); void getbookmarkfolderstarray(in nsiuri auri, in print64array aresult); native code only!
... obsolete since gecko 1.9 void getbookmarkidsforuri(in nsiuri auri, [optional] out unsigned long count, [array, retval, size_is(count)] out long long bookmarks); note: renamed from getbookmarkfolders in gecko 1.9 void getbookmarkidsforuritarray(in nsiuri auri, in print64array aresult); native code only!
... return value native code only!getbookmarkfolderstarray obsolete since gecko 1.9 (firefox 3)this feature is obsolete.
...And 8 more matches

BiquadFilterNode.getFrequencyResponse() - Web APIs
the getfrequencyresponse() method of the biquadfilternode interface takes the current filtering algorithm's settings and calculates the frequency response for frequencies specified in a specified array of frequencies.
... the two output arrays, magresponseoutput and phaseresponseoutput, must be created before calling this method; they must be the same size as the array of input frequency values (frequencyarray).
... syntax biquadfilternode.getfrequencyresponse(frequencyarray, magresponseoutput, phaseresponseoutput); parameters frequencyarray a float32array containing an array of frequencies, specified in hertz, which you want to filter.
...And 8 more matches

WebGLRenderingContext.getVertexAttrib() - Web APIs
possible values: gl.vertex_attrib_array_buffer_binding: returns the currently bound webglbuffer.
... gl.vertex_attrib_array_enabled: returns a glboolean that is true if the vertex attribute is enabled at this index.
... gl.vertex_attrib_array_size: returns a glint indicating the size of an element of the vertex array.
...And 8 more matches

WebGL best practices - Web APIs
take advantage of universally supported webgl 1 extensions these webgl 1 extensions are universally supported: angle_instanced_arrays ext_blend_minmax oes_element_index_uint oes_standard_derivatives oes_vertex_array_object webgl_debug_renderer_info webgl_lose_context (see also: https://jdashg.github.io/misc/webgl/webgl-feature-levels.html) consider polyfilling these into webglrenderingcontext, like: https://github.com/jdashg/misc/blob/master/webgl/webgl-v1.1.js universally supported limits the minimum requirements f...
... and to a lesser degree, vao attachments (vertexattribpointer, disable/enablevertexattribarray) drawing from static, unchanging vaos is faster than mutating the same vao for every draw call.
... always keep vertex attrib 0 array-enabled if you draw with vertex attrib 0 array disabled, you will force the browser to do complicated emulation when running on desktop opengl (such as on macos).
...And 8 more matches

Rest parameters - JavaScript
the rest parameter syntax allows us to represent an indefinite number of arguments as an array.
...which will cause all remaining (user supplied) arguments to be placed within a "standard" javascript array.
...formally defined in function expression), while the arguments object contains all arguments passed to the function; the arguments object is not a real array, while rest parameters are array instances, meaning methods like sort, map, foreach or pop can be applied on it directly; the arguments object has additional functionality specific to itself (like the callee property).
...And 8 more matches

JSON.stringify() - JavaScript
the json.stringify() method converts a javascript object or value to a json string, optionally replacing values if a replacer function is specified or optionally including only the specified properties if a replacer array is specified.
... replacer optional a function that alters the behavior of the stringification process, or an array of string and number that serve as an allowlist for selecting/filtering the properties of the value object to be included in the json string.
...if any such values are encountered during conversion they are either omitted (when found in an object) or changed to null (when found in an array).
...And 8 more matches

Understanding WebAssembly text format - WebAssembly
next, we’ll load our binary into a typed array called addcode (as described in fetching webassembly bytecode), compile and instantiate it, and execute our add function in javascript (we can now find add() in the exports property of the instance): webassembly.instantiatestreaming(fetch('add.wasm')) .then(obj => { console.log(obj.instance.exports.add(1, 2)); // "3" }); note: you can find this example in github as add.html (see it li...
...according to webassembly, memory is just a large array of bytes that can grow over time.
... from javascript’s point of view, it’s as though memory is all inside one big (resizable) arraybuffer.
...And 8 more matches

widget - Archive of obsolete content
we could implement the main user interface as a widget hosting an array of buttons to control play/pause/stop functions.
... contentscriptfile string,array a local file url or an array of local file urls of content scripts to load.
... contentscript string,array a string or an array of strings containing the texts of content scripts to load.
...And 7 more matches

TypeScript support in Svelte - Learn web development
(ts) $: completedtodos = todos.filter(t => t.completed).length we will use the todotype we already defined to tell typescript that todos is a todotype array — replace your export let todos line with the following: import type { todotype } from '../types/todo.type' export let todos: todotype[] notice that now typescript can infer that the t variable in todos.filter(t => t.completed) is of type todotype.
... start by importing the todotype and telling typescript that our todos variable is an array of todotype.
...(ts) <todo {todo} this is because the todos prop in the todosstatus component has no default value, so typescript has inferred it to be of type undefined, which is not compatible with an array of todotype.
...And 7 more matches

JIT Optimization Outcomes
arraybadflags the array being accessed may have flags that the optimization strategy cannot handle.
... for example, if the array has sparse indexes, or has indexes that overflow the array's length, the optimization strategy may fail.
... arraydoubleconversion the type-system indicates that some arrays at this site should be converted to packed arrays of doubles while others should not.
...And 7 more matches

imgIContainer
as a service: var imgicontainer = components.classes["@mozilla.org/????????????????????????????"] .createinstance(components.interfaces.imgicontainer); method overview void addrestoredata([array, size_is(acount), const] in char data, in unsigned long acount); native code only!
... obsolete since gecko 2.0 void appendframe(in print32 ax, in print32 ay, in print32 awidth, in print32 aheight, in gfximageformat aformat, [array, size_is(imagelength)] out pruint8 imagedata, out unsigned long imagelength); native code only!
... obsolete since gecko 2.0 void appendpalettedframe(in print32 ax, in print32 ay, in print32 awidth, in print32 aheight, in gfximageformat aformat, in pruint8 apalettedepth, [array, size_is(imagelength)] out pruint8 imagedata, out unsigned long imagelength, [array, size_is(palettelength)] out pruint32 palettedata, out unsigned long palettelength); native code only!
...And 7 more matches

nsIConsoleService
inherits from: nsisupports last changed in gecko 19 (firefox 19 / thunderbird 19 / seamonkey 2.16) implemented by: @mozilla.org/consoleservice;1 as a service: var consoleservice = components.classes["@mozilla.org/consoleservice;1"] .getservice(components.interfaces.nsiconsoleservice); method overview void getmessagearray([array, size_is(count)] out nsiconsolemessage messages, out uint32_t count);obsolete since gecko 19 void getmessagearray([optional] out uint32_t count, [retval, array, size_is(count)] out nsiconsolemessage messages); void logmessage(in nsiconsolemessage message); void logstringmessage(in wstring message); void registerlistener(in nsiconsolelistener listener); ...
... void reset(); void unregisterlistener(in nsiconsolelistener listener); methods getmessagearray() to obtain an array of all logged messages.
... void getmessagearray( [array, size_is(count)] out nsiconsolemessage messages, out pruint32 count ); parameters messages an array of logged messages.
...And 7 more matches

nsITreeView
ex, in boolean before); obsolete since gecko 1.8 boolean candropon(in long index); obsolete since gecko 1.8 void cyclecell(in long row, in nsitreecolumn col); void cycleheader(in nsitreecolumn col); void drop(in long row, in long orientation, in nsidomdatatransfer datatransfer); astring getcellproperties(in long row, in nsitreecolumn col, in nsisupportsarray properties obsolete since gecko 22); astring getcelltext(in long row, in nsitreecolumn col); astring getcellvalue(in long row, in nsitreecolumn col); astring getcolumnproperties(in nsitreecolumn col, in nsisupportsarray properties obsolete since gecko 22); astring getimagesrc(in long row, in nsitreecolumn col); long getlevel(in long index); lo...
...ng getparentindex(in long rowindex); long getprogressmode(in long row, in nsitreecolumn col); astring getrowproperties(in long index, in nsisupportsarray properties obsolete since gecko 22); boolean hasnextsibling(in long rowindex, in long afterindex); boolean iscontainer(in long index); boolean iscontainerempty(in long index); boolean iscontaineropen(in long index); boolean iseditable(in long row, in nsitreecolumn col); boolean isselectable(in long row, in nsitreecolumn col); boolean isseparator(in long index); boolean issorted(); void performaction(in wstring action); void performactiononcell(in wstring action, in long row, in nsitreecolumn col); void performactiononrow(in wst...
... astring getcellproperties( in long row, in nsitreecolumn col, in nsisupportsarray properties ); parameters row the index of the row.
...And 7 more matches

XPIDL
array<t> const nstarray<t>& nstarray<t>& array the c++-exposed type t will be an owned variant.
...webidl types will be passed as mozilla::dom::interfacename* when used as in-parameters, as mozilla::dom::interfacename** when used as out or inout-parameters, and as refptr<mozilla::dom::interfacename> when used as an array element.
...the array property turns the parameter into an array; the parameter must also have a corresponding size_is property whose argument is the parameter that has the size of the array.
...And 7 more matches

Declaring types
primitive types primitive types are those types that represent a single value in memory, as opposed to arrays, structures, or functions.
...this method accepts as input the name of the structure and an array of field descriptors, each describing one field in the structure.
... you can, optionally, leave out the field descriptor array; this creates an opaque structure whose contents are not defined.
...And 7 more matches

Type conversion
implicit convert in js-ctypes, data could be converted implicitly when passing to or returning from a functiontype call, or setting pointer content, an array element or a struct field.
... var buffer = ctypes.char.array(10)(); var somecfunction = library.declare("somecfunction", ctypes.default_abi, ctypes.void_t, ctypes.char.ptr); somecfunction(buffer); // here ctypes.char.array(10)() is converted to ctypes.char.ptr type implicit conversion can be tested in the following way: var mystruct = ctypes.structtype("mystructtype", [ { "v": ctypes.bool } ])(); mystruct.v = 1; console.log(mystruct.v.tostring()); // 'true' boolean type target type source converted value ctypes.bool js boolean src js number (0 or 1) if src == 0: false if src == 1: true var mystruct = ctypes.structtype("mystructtype", [ { "v": ctypes.bool } ])(); mystruct.v = true; console.log(mystruct.v.tostring()); // 'true' mystruct.v = false; console...
...v.tostring()); // 10 mystruct.v = ctypes.int32_t(10); // throws error float types target type source converted value any float types js number (only if fits to the size) src pointer types target type source converted value any pointer types null nullptr ctypes.voidptr_t any pointer types src any array types src.addressofelement(0) ctypes.pointertype(t) ctypes.arraytype(t) src.addressofelement(0) ctypes.arraytype(t, n) src.addressofelement(0) var mystruct = ctypes.structtype("mystructtype", [ { "v": ctypes.int16_t.ptr } ])(); mystruct.v = ctypes.int16_t.array(10)(); console.log(mystruct.v.tostring()); // 'ctypes.int16_t.ptr(ctypes.uint64("0x11d6ff400...
...And 7 more matches

Debugger.Object - Firefox Developer Tools
for example: function h() { var i = function() {}; // display name: h/i f(function () {}); // display name: h/< } var s = f(function () {}); // display name: s< parameternames if the referent is a debuggee function, the names of the its parameters, as an array of strings.
... if the referent is a host function for which parameter names are not available, return an array with one element per parameter, each of which is undefined.
... if the referent is a function proxy, return an empty array.
...And 7 more matches

Pixel manipulation with canvas - Web APIs
with the imagedata object you can directly read and write a data array to manipulate pixel data.
... data a uint8clampedarray representing a one-dimensional array containing the data in the rgba order, with integer values between 0 and 255 (included).
... the data property returns a uint8clampedarray which can be accessed to look at the raw pixel data; each pixel is represented by four one-byte values (red, green, blue, and alpha, in that order; that is, "rgba" format).
...And 7 more matches

WebGLRenderingContext.getParameter() - Web APIs
constant returned type description gl.active_texture glenum gl.aliased_line_width_range float32array (with 2 elements) gl.aliased_point_size_range float32array (with 2 elements) gl.alpha_bits glint gl.array_buffer_binding webglbuffer gl.blend glboolean gl.blend_color float32array (with 4 values) gl.blend_dst_alpha glenum gl.blend_dst_rgb glenum gl.blend_equation glenum ...
... gl.blend_equation_alpha glenum gl.blend_equation_rgb glenum gl.blend_src_alpha glenum gl.blend_src_rgb glenum gl.blue_bits glint gl.color_clear_value float32array (with 4 values) gl.color_writemask sequence<glboolean> (with 4 values) gl.compressed_texture_formats uint32array returns the compressed texture formats.
... gl.depth_bits glint gl.depth_clear_value glfloat gl.depth_func glenum gl.depth_range float32array (with 2 elements) gl.depth_test glboolean gl.depth_writemask glboolean gl.dither glboolean gl.element_array_buffer_binding webglbuffer gl.framebuffer_binding webglframebuffer or null null corresponds to a binding to the default framebuffer.
...And 7 more matches

A basic 2D WebGL animation example - Web APIs
let gl = null; let glcanvas = null; // aspect ratio and coordinate system // details let aspectratio; let currentrotation = [0, 1]; let currentscale = [1.0, 1.0]; // vertex information let vertexarray; let vertexbuffer; let vertexnumcomponents; let vertexcount; // rendering data shared with the // scalers.
...entbyid("glcanvas"); gl = glcanvas.getcontext("webgl"); const shaderset = [ { type: gl.vertex_shader, id: "vertex-shader" }, { type: gl.fragment_shader, id: "fragment-shader" } ]; shaderprogram = buildshaderprogram(shaderset); aspectratio = glcanvas.width/glcanvas.height; currentrotation = [0, 1]; currentscale = [1.0, aspectratio]; vertexarray = new float32array([ -0.5, 0.5, 0.5, 0.5, 0.5, -0.5, -0.5, 0.5, 0.5, -0.5, -0.5, -0.5 ]); vertexbuffer = gl.createbuffer(); gl.bindbuffer(gl.array_buffer, vertexbuffer); gl.bufferdata(gl.array_buffer, vertexarray, gl.static_draw); vertexnumcomponents = 2; vertexcount = vertexarray.length/vertexnumcomponents; currentangle = 0.0; rotationrate = 6; animatescene(); }...
...the array shaderset contains a list of objects, each describing one shader function to be compiled into the program.
...And 7 more matches

WindowOrWorkerGlobalScope.setInterval() - Web APIs
xit) { return false; } } amap.length--; return true; } function typewrite () { if (spart.length === 0 && scroll(asheets[nidx], 0, true) && nidx++ === asheets.length - 1) { clean(); return; } ocurrent.nodevalue += spart.charat(0); spart = spart.slice(1); } function sheet (onode) { this.ref = onode; if (!onode.haschildnodes()) { return; } this.parts = array.prototype.slice.call(onode.childnodes); for (var nchild = 0; nchild < this.parts.length; nchild++) { onode.removechild(this.parts[nchild]); this.parts[nchild] = new sheet(this.parts[nchild]); } } var nintervid, ocurrent = null, btyping = false, bstart = true, nidx = 0, spart = "", asheets = [], amap = []; this.rate = nrate || 100; this.play = function () { ...
...*/) { var aargs = array.prototype.slice.call(arguments, 2); return __nativest__(vcallback instanceof function ?
...*/) { var aargs = array.prototype.slice.call(arguments, 2); return __nativesi__(vcallback instanceof function ?
...And 7 more matches

JavaScript data types and data structures - JavaScript
special non-data but structural type for any constructed object instance also used as data structures: new object, new array, new map, new set, new weakmap, new set, new date and almost everything made with new keyword; function : a non-data structure, though it also answers for typeof operator: typeof instance === "function".
...javascript offers other means to represent a set of booleans (like an array of booleans, or an object with boolean values assigned to named properties).
...for instance, with a separator, one could emulate a list (while a javascript array would be more suitable).
...And 7 more matches

Regular expressions - JavaScript
it returns an array of information or null on a mismatch.
... match() returns an array containing all of the matches, including capturing groups, or null if no match is found.
... split() uses a regular expression or a fixed string to break a string into an array of substrings.
...And 7 more matches

Loading and running WebAssembly code - WebAssembly
the older webassembly.compile/webassembly.instantiate methods require you to create an arraybuffer containing your webassembly module binary after fetching the raw bytes, and then compile/instantiate it.
... this is analogous to new function(string), except that we are substituting a string of characters (javascript source code) with an array buffer of bytes (webassembly source code).
... the newer webassembly.compilestreaming/webassembly.instantiatestreaming methods are a lot more efficient — they perform their actions directly on the raw stream of bytes coming from the network, cutting out the need for the arraybuffer step.
...And 7 more matches

Menu - Archive of obsolete content
parameters menuitems an array of menuitems.
...the items property may be used to define an array of menuitems.
... items array an array of menuitems in the menu.
...And 6 more matches

tabbrowser - Archive of obsolete content
tabs type: array a nodelist containing the tab objects for each tab in the tabbrowser.
... visibletabs type: array an array containing tab objects for each visible tab in the tabbrowser.
...the argument should be an array of objects, one for each document to load.
...And 6 more matches

Index - Learn web development
64 introducing javascript objects article, assessment, beginner, codingscripting, guide, javascript, learn, objects, tutorial in javascript, most things are objects, from core javascript features like arrays to the browser apis built on top of javascript.
... 74 working with json article, beginner, codingscripting, guide, json, json api, json arrays, json parsing, json structure, javascript, learn, objects, tutorial, l10n:priority in this article, we've given you a simple guide to using json in your programs, including how to create and parse json, and how to access data locked inside it.
... 75 javascript first steps arrays, article, assessment, beginner, codingscripting, guide, javascript, landing, module, numbers, operators, variables, l10n:priority, maths, strings in our first javascript module, we first answer some fundamental questions such as "what is javascript?", "what does it look like?", and "what can it do?", before moving on to taking you through your first practical experience of writing javascript.
...And 6 more matches

Solve common problems in your JavaScript code - Learn web development
what is an array?
... arrays how do you create an array?
... how do you access and modify the items in an array?
...And 6 more matches

PromiseWorker.jsm
aargs an array of arguments to pass to the function named afunctionname in the worker file.
... if the worker function does not have any arguments and the empty array should be passed here.
... atransferlist optional an optional array of transferable objects to transfer ownership of.
...And 6 more matches

JS_DefineConstDoubles
cds jsconstdoublespec * pointer to an array of jsconstdoublespec records containing property names and values to create.
... the last array element must contain zero-valued members.
... cis jsconstintegerspec * pointer to an array of jsconstintegerspec records containing property names and values to create.
...And 6 more matches

Secure Development Guidelines
a/b : 0; } writing secure code: memory management string handling c-style strings are byte arrays that end with a \0 byte some string handling functions won’t perform any kind of length checking, so don’t use them ensure your string is always \0 terminated!
... buffer bounds validations (bbv) thou shalt check the array bounds of all strings (indeed, all arrays), for surely where thou typest "foo" someone someday shall type "supercalifragilisticexpialidocious".
... most memory allocators use a linked list or binary tree bbv: off-by-one the array index starts at 0 not at 1 char array[1024]; array[0] = first element!
...And 6 more matches

IAccessibleTable
refer to @ref _arrayconsideration "special consideration when using arrays" for more details.
... children an array of cell indexes of selected cells (each index is 0 based), allocated by the server.
...nchildren the number of cell indexes returned; the size of the returned array.
...And 6 more matches

inIDOMUtils
ar inidomutils = components.classes["@mozilla.org/inspector/dom-utils;1"] .getservice(components.interfaces.inidomutils); method overview void addpseudoclasslock(in nsidomelement aelement, in domstring apseudoclass); void clearpseudoclasslocks(in nsidomelement aelement); [implicit_jscontext] jsval colornametorgb(in domstring acolorname); nsiarray getbindingurls(in nsidomelement aelement); nsidomnodelist getchildrenfornode(in nsidomnode anode, in boolean ashowinganonymouscontent); unsigned long long getcontentstate(in nsidomelement aelement); void getcsspropertynames([optional] in unsigned long aflags, [optional] out unsigned long acount, [retval, array, size_is(acount)] out wstring aprops); nsisupport...
...sarray getcssstylerules(in nsidomelement aelement, [optional] in domstring apseudo); nsidomnode getparentfornode(in nsidomnode anode, in boolean ashowinganonymouscontent); unsigned long getruleline(in nsidomcssstylerule arule); unsigned long getrulecolumn(in nsidomcssstylerule arule); unsigned long getselectorcount(in nsidomcssstylerule arule); astring getselectortext(in nsidomcssstylerule arule, in unsigned long aselectorindex); unsigned long long getspecificity(in nsidomcssstylerule arule, in unsigned long aselectorindex); nsidomfontfacelist getusedfontfaces(in nsidomrange arange); bool haspseudoclasslock(in nsidomelement aelement, in domstring apseudoclass); boolean isignorablewhitespace(in nsidomcharacterdata ...
... value state 1 :active 2 :focus 4 :hover 8 :-moz-drag-over 16 :target 1<<29 :-moz-focusring methods getbindingurls() returns an array of nsiuri objects representing the current xml binding for the specified element.
...And 6 more matches

nsIBinaryInputStream
inherits from: nsiinputstream last changed in gecko 1.7 method overview pruint8 read8(); pruint16 read16(); pruint32 read32(); pruint64 read64(); unsigned long readarraybuffer(in pruint32 alength, in jsval aarraybuffer); prbool readboolean(); void readbytearray(in pruint32 alength, [array, size_is(alength), retval] out pruint8 abytes); void readbytes(in pruint32 alength, [size_is(alength), retval] out string astring); acstring readcstring(); double readdouble(); float readfloat(); astring readstring()...
... readarraybuffer() read opaque bytes from the stream, storing the results in an arraybuffer.
... unsigned long readarraybuffer(in pruint32 alength, in jsval aarraybuffer); parameters alength the number of bytes that should be read.
...And 6 more matches

CType
arraytype these represent c arrays.
... method overview methods available on all ctype objects ctype array([n]) string tosource() string tostring() properties properties of all ctype objects these properties are available on all ctype objects.
...for other function, pointer, and array types, this should be a valid c type expression.
...And 6 more matches

AnalyserNode.getFloatFrequencyData() - Web APIs
the getfloatfrequencydata() method of the analysernode interface copies the current frequency data into a float32array array passed into it.
... each item in the array represents the decibel value for a specific frequency.
...for example, for 48000 sample rate, the last item of the array will represent the decibel value for 24000 hz.
...And 6 more matches

Console.table() - Web APIs
this function takes one mandatory argument data, which must be an array or an object, and one additional optional parameter columns.
...each element in the array (or enumerable property if data is an object) will be a row in the table.
...if data is an array, then its values will be the array indices.
...And 6 more matches

Using microtasks in JavaScript with queueMicrotask() - Web APIs
consider code such as this: customelement.prototype.getdata = url => { if (this.cache[url]) { this.data = this.cache[url]; this.dispatchevent(new event("load")); } else { fetch(url).then(result => result.arraybuffer()).then(data => { this.cache[url] = data; this.data = data; this.dispatchevent(new event("load")); }); } }; the problem introduced here is that by using a task in one branch of the if...else statement (in the case in which the image is available in the cache) but having promises involved in the else clause, we have a situation in which the order of operations can va...
... we can ensure consistent ordering of these operations by using a microtask in the if clause to balance the two clauses: customelement.prototype.getdata = url => { if (this.cache[url]) { queuemicrotask(() => { this.data = this.cache[url]; this.dispatchevent(new event("load")); }); } else { fetch(url).then(result => result.arraybuffer()).then(data => { this.cache[url] = data; this.data = data; this.dispatchevent(new event("load")); }); } }; this balances the clauses by having both situations handle the setting of data and firing of the load event within a microtask (using queuemicrotask() in the if clause and using the promises used by fetch() in the else clause).
... the snippet below creates a function that batches multiple messages into an array, using a microtask to send them as a single object when the context exits.
...And 6 more matches

IIRFilterNode.getFrequencyResponse() - Web APIs
the getfrequencyresponse() method of the iirfilternode interface takes the current filtering algorithm's settings and calculates the frequency response for frequencies specified in a specified array of frequencies.
... the two output arrays, magresponseoutput and phaseresponseoutput, must be created before calling this method; they must be the same size as the array of input frequency values (frequencyarray).
... syntax iirfilternode.getfrequencyresponse(frequencyarray, magresponseoutput, phaseresponseoutput); parameters frequencyarray a float32array containing an array of frequencies, specified in hertz, which you want to filter.
...And 6 more matches

Intersection Observer API - Web APIs
threshold either a single number or an array of numbers which indicate at what percentage of the target's visibility the observer's callback should be executed.
...if you want the callback to run every time visibility passes another 25%, you would specify the array [0, 0.25, 0.5, 0.75, 1].
... for example, if you want to be informed every time a target's visibility passes backward or forward through each 25% mark, you would specify the array [0, 0.25, 0.5, 0.75, 1] as the list of thresholds when creating the observer.
...And 6 more matches

TextEncoder - Web APIs
example const encoder = new textencoder() const view = encoder.encode('€') console.log(view); // uint8array(3) [226, 130, 172] constructor textencoder() returns a newly constructed textencoder that will generate a byte stream with utf-8 encoding.
... textencoder.prototype.encode() takes a usvstring as input, and returns a uint8array containing utf-8 encoded text.
... textencoder.prototype.encodeinto() takes a usvstring to encode and a destination uint8array to put resulting utf-8 encoded text into, and returns a dictionary object indicating the progress of the encoding.
...And 6 more matches

WebGLRenderingContext.readPixels() - Web APIs
the webglrenderingcontext.readpixels() method of the webgl api reads a block of pixels from a specified rectangle of the current color framebuffer into an arraybufferview object.
... syntax // webgl1: void gl.readpixels(x, y, width, height, format, type, pixels); // webgl2: void gl.readpixels(x, y, width, height, format, type, glintptr offset); void gl.readpixels(x, y, width, height, format, type, arraybufferview pixels, gluint dstoffset); parameters x a glint specifying the first horizontal pixel that is read from the lower left corner of a rectangular block of pixels.
...possible values: gl.unsigned_byte gl.unsigned_short_5_6_5 gl.unsigned_short_4_4_4_4 gl.unsigned_short_5_5_5_1 gl.float webgl2 adds gl.byte gl.unsigned_int_2_10_10_10_rev gl.half_float gl.short gl.unsigned_short gl.int gl.unsigned_int gl.unsigned_int_10f_11f_11f_rev gl.unsigned_int_5_9_9_9_rev pixels an arraybufferview object to read data into.
...And 6 more matches

Matrix math for the web - Web APIs
in javascript, it is easy to represent a matrix as an array.
...lt0[2], result0[3], result1[0], result1[1], result1[2], result1[3], result2[0], result2[1], result2[2], result2[3], result3[0], result3[1], result3[2], result3[3] ]; } let's look at this function in action: let somematrix = [ 4, 0, 0, 0, 0, 3, 0, 0, 0, 0, 5, 0, 4, 8, 4, 1 ] let identitymatrix = [ 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 ]; // returns a new array equivalent to somematrix let somematrixresult = multiplymatrices(identitymatrix, somematrix); important: these matrix functions are written for clarity of explanation, not for speed or memory management.
... these functions create a lot of new arrays, which can be particularly expensive for real-time operations due to garbage collection.
...And 6 more matches

Creating 3D objects using WebGL - Web APIs
to do this efficiently, we're going to switch from drawing using the vertices directly by calling the gl.drawarrays() method to using the vertex array as a table, and referencing individual vertices in that table to define the positions of each face's vertices, by calling gl.drawelements().
...we can pass a lot fewer data around by building an array of all 24 vertices, then referring to each vertex by its index into that array instead of moving entire sets of coordinates around.
... gl.vertexattribpointer( programinfo.attriblocations.vertexposition, numcomponents, type, normalize, stride, offset); gl.enablevertexattribarray( programinfo.attriblocations.vertexposition); } define the vertices' colors we also need to build an array of colors for each of the 24 vertices.
...And 6 more matches

Using Web Workers - Web APIs
nsole.log('message posted to worker'); } second.onchange = function() { myworker.postmessage([first.value,second.value]); console.log('message posted to worker'); } so here we have two <input> elements represented by the variables first and second; when the value of either is changed, myworker.postmessage([first.value,second.value]) is used to send the value inside both to the worker, as an array.
... */ this.sendquery = function() { if (arguments.length < 1) { throw new typeerror('queryableworker.sendquery takes at least one argument'); return; } worker.postmessage({ 'querymethod': arguments[0], 'queryarguments': array.prototype.slice.call(arguments, 1) }); } we finish queryableworker with the onmessage method.
...eply('printstuff', a - b); }, waitsometime: function() { settimeout(function() { reply('doalert', 3, 'seconds'); }, 3000); } } function reply() { if (arguments.length < 1) { throw new typeerror('reply - takes at least one argument'); return; } postmessage({ querymethodlistener: arguments[0], querymethodarguments: array.prototype.slice.call(arguments, 1) }); } /* this method is called when main page calls queryworker's postmessage method directly*/ function defaultreply(message) { // do something } and the onmessage method is now trivial: onmessage = function(event) { if (event.data instanceof object && event.data.hasownproperty('querymethod') && event.data.hasownproperty('queryme...
...And 6 more matches

Sending and Receiving Binary Data - Web APIs
receiving binary data using javascript typed arrays the responsetype property of the xmlhttprequest object can be set to change the expected response type from the server.
... possible values are the empty string (default), "arraybuffer", "blob", "document", "json", and "text".
... the response property will contain the entity body according to responsetype, as an arraybuffer, blob, document, json, or string.
...And 6 more matches

Expressions and operators - JavaScript
destructuring for more complex assignments, the destructuring assignment syntax is a javascript expression that makes it possible to extract data from arrays or objects using a syntax that mirrors the construction of array and object literals.
... for example, if a is a 2-dimensional array with 10 elements on a side, the following code uses the comma operator to update two variables at once.
... the code prints the values of the diagonal elements in the array: var x = [0,1,2,3,4,5,6,7,8,9] var a = [x, x, x, x, x]; for (var i = 0, j = 9; i <= j; i++, j--) // ^ console.log('a[' + i + '][' + j + ']= ' + a[i][j]); unary operators a unary operation is an operation with only one operand.
...And 6 more matches

Functions - JavaScript
a non-primitive value, such as array or a user-defined object) as a parameter and the function changes the object's properties, that change is visible outside the function, as shown in the following example: function myfunc(theobject) { theobject.make = 'toyota'; } var mycar = {make: 'honda', model: 'accord', year: 1998}; var x, y; x = mycar.make; // x gets the value "honda" myfunc(mycar); y = mycar.make; // y gets the value "...
...the following example shows a map function that should receive a function as first argument and an array as second argument.
... function map(f, a) { let result = []; // create a new array let i; // declare variable for (i = 0; i != a.length; i++) result[i] = f(a[i]); return result; } in the following code, the function receives a function defined by a function expression and executes it for every element of the array received as a second argument.
...And 6 more matches

Object.entries() - JavaScript
the object.entries() method returns an array of a given object's own enumerable string-keyed property [key, value] pairs, in the same order as that provided by a for...in loop.
... the order of the array returned by object.entries() does not depend on how an object is defined.
... if there is a need for certain ordering, then the array should be sorted first, like object.entries(obj).sort((a, b) => b[0].localecompare(a[0]));.
...And 6 more matches

Object.getOwnPropertyNames() - JavaScript
the object.getownpropertynames() method returns an array of all properties (including non-enumerable properties except for those which use symbol) found directly in a given object.
... return value an array of strings that corresponds to the properties found directly in the given object.
... description object.getownpropertynames() returns an array whose elements are strings corresponding to the enumerable and non-enumerable properties found directly in a given object obj.
...And 6 more matches

delete operator - JavaScript
this includes properties of built-in objects like math, array, object and properties that are created as non-configurable with methods like object.defineproperty().
...however, in the case of internet explorer, when one uses delete on a property, some confusing behavior results, preventing other browsers from using simple objects like object literals as ordered associative arrays.
... if you want to use an ordered associative array in a cross-browser environment, use a map object if available, or simulate this structure with two separate arrays (one for the keys and the other for the values), or build an array of single-property objects, etc.
...And 6 more matches

for...of - JavaScript
the for...of statement creates a loop iterating over iterable objects, including: built-in string, array, array-like objects (e.g., arguments or nodelist), typedarray, map, set, and user-defined iterables.
... examples iterating over an array const iterable = [10, 20, 30]; for (const value of iterable) { console.log(value); } // 10 // 20 // 30 you can use let instead of const too, if you reassign the variable inside the block.
... const iterable = [10, 20, 30]; for (let value of iterable) { value += 1; console.log(value); } // 11 // 21 // 31 iterating over a string const iterable = 'boo'; for (const value of iterable) { console.log(value); } // "b" // "o" // "o" iterating over a typedarray const iterable = new uint8array([0x00, 0xff]); for (const value of iterable) { console.log(value); } // 0 // 255 iterating over a map const iterable = new map([['a', 1], ['b', 2], ['c', 3]]); for (const entry of iterable) { console.log(entry); } // ['a', 1] // ['b', 2] // ['c', 3] for (const [key, value] of iterable) { console.log(value); } // 1 // 2 // 3 iterating over a set const iterable = new set([1, 1, 2, 2, 3, 3]); for (const value of iterable) { console.log(value); } // 1 // 2 // 3 iterating o...
...And 6 more matches

page-worker - Archive of obsolete content
include string, regexp, array of (string or regexp) this is useful when your page worker loads a page which will redirect to other pages.
... a match pattern string or an array of match pattern strings.
... contentscriptfile string,array a local file url or an array of local file urls of content scripts to load.
...And 5 more matches

panel - Archive of obsolete content
contentscriptfile string,array a url or an array of urls.
... contentscript string,array a string or an array of strings containing the texts of content scripts to load.
... contentstylefile string, array a url or an array of urls.
...And 5 more matches

lang/type - Archive of obsolete content
isarray(value) returns true if value is an array, false otherwise.
... uses native array.isarray.
... let { isarray } = require('sdk/lang/type'); isarray([]); // true isarray({}); // false parameters value : mixed the variable to check.
...And 5 more matches

XPCOM Objects - Archive of obsolete content
this is done for certain value types that are not valid as return values in idl, such as typed arrays.
... void getchildlist(in string astartingat, out unsigned long acount,[array, size_is(acount), retval] out string achildarray); this method returns an array of strings.
...the second one will hold the length of the return array, and the third parameter will hold the array itself.
...And 5 more matches

Implementing controls using the Gamepad API - Game development
nnected (either physically by the user or due to inactivity.) in the demo, the gamepadapi object is used to store everything related to the api: var gamepadapi = { controller: {}, turbo: false, connect: function() {}, disconnect: function() {}, update: function() {}, buttonpressed: function() {}, buttons: [], buttonscache: [], buttonsstatus: [], axesstatus: [] }; the buttons array contains the xbox 360 button layout: buttons: [ 'dpad-up','dpad-down','dpad-left','dpad-right', 'start','back','axis-left','axis-right', 'lb','rb','power','a','b','x','y', ], this can be different for other types of gamepads like the ps3 controller (or a no-name, generic one), so you have to be careful and not just assume the button you're expecting will be the same button you'll actually...
...we are using only one gamepad for this game, so it's a single object instead of an array of gamepads.
... axes: the state of each axis, represented by an array of floating-point values.
...And 5 more matches

Silly story generator - Learn web development
objective: to test comprehension of javascript fundamentals, such as variables, numbers, operators, strings, and arrays.
...in addition you've got a function called randomvaluefromarray() that takes an array, and returns one of the items stored inside the array at random.
... store the first set of three strings inside an array called insertx.
...And 5 more matches

React interactivity: Editing, filtering, conditional rendering - Learn web development
we'll use array.prototype.map() instead of array.prototype.filter() because we want to return a new array with some changes, instead of deleting something from the array.
... render an array of <filterbutton /> elements that allow users to change the active filter between all, completed, and incomplete.
... at the top of app.js, beneath our imports but above our app() function, let's add an object called filter_map: const filter_map = { all: () => true, active: task => !task.completed, completed: task => task.completed }; the values of filter_map are functions that we will use to filter the tasks data array: the all filter shows all tasks, so we return true for all tasks.
...And 5 more matches

Working with Svelte stores - Learn web development
first of all, add the following line below your todos array: $: console.log('todos', todos) next, update your todos component call as follows: <todos bind:todos /> remember: <todos bind:todos /> is just a shortcut for <todos bind:todos={todos} />.
...you'll see that every modification we make to our todos is reflected in the todos array defined in app.svelte thanks to the bind directive.
...add these lines below the todos array: console.log('todos store - todos:', todos) console.log('todos store content - $todos:', $todos) when you run the app now, you'll see something like this in your web console: as you can see, our store is just an object containing subscribe(), set(), and update() methods, and $todos is our array of todos.
...And 5 more matches

Rendering a list of Vue components - Learn web development
objective: to learn how to loop through an array of data and render it in multiple components.
...this is a built-in vue directive that lets us include a loop inside of our template, repeating the rendering of a template feature for each item in an array.
... we'll use this to iterate through an array of to-do items and display them in our app in separate todoitem components.
...And 5 more matches

IPDL Tutorial
ipdl supports built-in and custom primitive types, as well as unions and arrays.
... struct namevaluepair { nscstring name; nscstring value; }; in implementation code, these structs can be created and used like so: namevaluepair entry(astring, anotherstring); foo(entry.name(), entry.value()); // named accessor functions return references to the members arrays ipdl has simple syntax for arrays: invokemethod(nscstring[] args); in c++ this is translated into a nstarray reference: virtual bool recvinvokemethod(nstarray<nscstring>& args); ipdl's generated data structures can be used in several protocols if they are defined in a separate .ipdlh file.
... class ppluginparent { /* allocate a pplugininstanceparent when the first form of callplugininstanceconstructor is called */ virtual pplugininstanceparent* allocpplugininstance(const nscstring& type, const nstarray<nscstring>& args, int* rv) = 0; /* deallocate the pplugininstanceparent after pplugininstancedestructor is done with it */ virtual bool deallocpplugininstance(pplugininstanceparent* actor) = 0; /* constructor message */ virtual callpplugininstanceconstructor(const nscstring& type, const nstarray<nscstring>& args, int* rv) { /* generated code */ } /* alternate form of constructor mess...
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NSS API Guidelines
the preferred format is: "@(#) $rcsfile: nss-guidelines.html, v $ $revision: 48936 $ $date: 2009-08-11 07:45:57 -0700 (tue, 11 aug 2009) $ $name$" you can put the string in a comment or in a static char array.
... use #ifdef debug to include the array in debug builds only.
... the advantage of using an array is that you can use strings(1) to pull the id tags out of a (debug) compiled library.
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IAccessibleTable2
[propget] hresult selectedcells( [out, size_is(, nselectedcells,)] iunknown cells, [out] long nselectedcells ); parameters cells pointer to an array of references to selected accessibles.
... the array is allocated by the server.
...nselectedcells the number of accessibles returned; the size of the returned array.
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IAccessibleTableCell
columnheadercells() returns the column headers as an array of cell accessibles.
... [propget] hresult columnheadercells( [out, size_is(, ncolumnheadercells,)] iunknown cellaccessibles, [out] long ncolumnheadercells ); parameters cellaccessibles pointer to an array of references to cell accessibles.
... the array is allocated by the server.
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nsIDragService
nsidragsession getcurrentsession( ) ; void invokedragsession( in nsidomnode adomnode, in nsisupportsarray atransferables, in nsiscriptableregion aregion, in unsigned long aactiontype ); void invokedragsessionwithimage(in nsidomnode adomnode, in nsisupportsarray atransferablearray, in nsiscriptableregion aregion, in unsigned long aactiontype, in nsidomnode aimage, in long aimagex, in long aimagey, in nsidomdragevent adragevent, in nsidomdatatransfer adatatransfer); void invokedragse...
...ssionwithselection(in nsiselection aselection, in nsisupportsarray atransferablearray, in unsigned long aactiontype, in nsidomdragevent adragevent, in nsidomdatatransfer adatatransfer); void startdragsession( ) ; void suppress(); void unsuppress(); constants constant value description dragdrop_action_none 0 no action.
... invokedragsession() starts a modal drag session with an array of transferables void invokedragsession( in nsidomnode adomnode, in nsisupportsarray atransferables, in nsiscriptableregion aregion, in unsigned long aactiontype ); parameters adomnode the source node on which the drag gesture was started.
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nsIEventListenerService
method overview void geteventtargetchainfor(in nsidomeventtarget aeventtarget, [optional] out unsigned long acount, [retval, array, size_is(acount)] out nsidomeventtarget aoutarray); void getlistenerinfofor(in nsidomeventtarget aeventtarget, [optional] out unsigned long acount, [retval, array, size_is(acount)] out nsieventlistenerinfo aoutarray); boolean haslistenersfor(in nsidomeventtarget aeventtarget, in domstring atype); void addsystemeventlistener(in nsidomeventtarget tar...
... obsolete since gecko 7.0 methods geteventtargetchainfor() returns an array of event targets indicating all the targets that will receive the same events that are delivered to the specified target.
...void geteventtargetchainfor( in nsidomeventtarget aeventtarget, [optional] out unsigned long acount, [retval, array, size_is(acount)] out nsidomeventtarget aoutarray ); parameters aeventtarget the nsidomeventtarget for which to return the event target chain.
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nsINavHistoryQuery
this is important because, if the user has their profile on a networked drive, query latency can be non-negligible method overview nsinavhistoryquery clone(); void getfolders([optional ]out unsigned long count, [retval,array,size_is(count)] out long long folders); void gettransitions([optional] out unsigned long count, [retval,array,size_is(count)] out unsigned long transitions); void setfolders([const,array, size_is(foldercount)] in long long folders, in unsigned long foldercount); void settransitions([const,array, size_is(count)] in unsigned long transitions, in unsigned long count); attributes attri...
...this attribute must be an array of strings.
...when called as a getter, this returns an array of strings sorted in ascending lexicographical (alphabetical) order.
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nsISelectionPrivate
void getrangesforinterval(in nsidomnode beginnode, in print32 beginoffset, in nsidomnode endnode, in print32 endoffset, in prbool allowadjacent, out pruint32 resultcount, [retval, array, size_is(resultcount)] out nsidomrange results); void getrangesforintervalarray(in nsinode beginnode, in print32 beginoffset, in nsinode endnode, in print32 endoffset, in boolean allowadjacent, in rangearray results); native code only!
... void getrangesforintervalcomarray(in nsidomnode beginnode, in print32 beginoffset, in nsidomnode endnode, in print32 endoffset, in prbool allowadjacent, in rangearray results); native code only!
... getrangesforinterval() return array of ranges intersecting with the given dom interval.
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AnalyserNode.getByteFrequencyData() - Web APIs
the getbytefrequencydata() method of the analysernode interface copies the current frequency data into a uint8array (unsigned byte array) passed into it.
... each item in the array represents the decibel value for a specific frequency.
...for example, for 48000 sample rate, the last item of the array will represent the decibel value for 24000 hz.
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DOMMatrixReadOnly - Web APIs
dommatrixreadonly.tofloat32array() returns a new float32array containing all 16 elements (m11, m12, m13, m14, m21, m22, m23, m24, m31, m32, m33, m34, m41, m42, m43, m44) which comprise the matrix.
... the elements are stored into the array as single-precision floating-point numbers in column-major (colexographical access, or "colex") order.
... (in other words, down the first column from top to bottom, then the second column, and so forth.) dommatrixreadonly.tofloat64array() returns a new float64array containing all 16 elements (m11, m12, m13, m14, m21, m22, m23, m24, m31, m32, m33, m34, m41, m42, m43, m44) which comprise the matrix.
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ImageData() - Web APIs
the imagedata() constructor returns a newly instantiated imagedata object built from the typed array given and having the specified width and height.
... syntax new imagedata(array, width [, height]); new imagedata(width, height); parameters array optional a uint8clampedarray containing the underlying pixel representation of the image.
... if no such array is given, an image with a transparent black rectangle of the specified width and height will be created.
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WebGL2RenderingContext.getActiveUniforms() - Web APIs
uniformindices an array of gluint specifying the indices of the active uniforms to query.
...possible values: gl.uniform_type: returns an array of glenum indicating the types of the uniforms.
... gl.uniform_size: returns an array of gluint indicating the sizes of the uniforms.
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WebGLRenderingContext.bufferData() - Web APIs
syntax // webgl1: void gl.bufferdata(target, size, usage); void gl.bufferdata(target, arraybuffer?
... srcdata, usage); void gl.bufferdata(target, arraybufferview srcdata, usage); // webgl2: void gl.bufferdata(target, arraybufferview srcdata, usage, srcoffset, length); parameters target a glenum specifying the binding point (target).
... possible values: gl.array_buffer: buffer containing vertex attributes, such as vertex coordinates, texture coordinate data, or vertex color data.
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Adding 2D content to a WebGL context - Web APIs
gl.bindbuffer(gl.array_buffer, positionbuffer); // now create an array of positions for the square.
...we do this by creating a float32array from the // javascript array, then use it to fill the current buffer.
... gl.bufferdata(gl.array_buffer, new float32array(positions), gl.static_draw); return { position: positionbuffer, }; } this routine is pretty simplistic given the basic nature of the scene in this example.
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Signaling and video calling - Web APIs
function sendtooneuser(target, msgstring) { var isunique = true; var i; for (i=0; i<connectionarray.length; i++) { if (connectionarray[i].username === target) { connectionarray[i].send(msgstring); break; } } } this function iterates over the list of connected users until it finds one matching the specified username, then sends the message to that user.
...each entry in connectionarray is a websocket object, so we can just call its send() method directly.
...this involves a change near the end of the "connection" message handler: if (sendtoclients) { var msgstring = json.stringify(msg); var i; if (msg.target && msg.target !== undefined && msg.target.length !== 0) { sendtooneuser(msg.target, msgstring); } else { for (i=0; i<connectionarray.length; i++) { connectionarray[i].send(msgstring); } } } this code now looks at the pending message to see if it has a target property.
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Keyed collections - JavaScript
you can use a for...of loop to return an array of [key, value] for each iteration.
... let myset = new set(); myset.add(1); myset.add('some text'); myset.add('foo'); myset.has(1); // true myset.delete('foo'); myset.size; // 2 for (let item of myset) console.log(item); // 1 // "some text" converting between array and set you can create an array from a set using array.from or the spread operator.
... also, the set constructor accepts an array to convert in the other direction.
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Working with objects - JavaScript
objects are sometimes called associative arrays, since each property is associated with a string value that can be used to access it.
... object.keys(o) this method returns an array with all the own (not in the prototype chain) enumerable properties' names ("keys") of an object o.
... object.getownpropertynames(o) this method returns an array containing all own properties' names (enumerable or not) of an object o.
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The arguments object - JavaScript
arguments is an array-like object accessible inside functions that contains the values of the arguments passed to that function.
... note: “array-like” means that arguments has a length property and properties indexed from zero, but it doesn't have array's built-in methods like foreach() or map().
... for example, if a function is passed 3 arguments, you can access them as follows: arguments[0] // first argument arguments[1] // second argument arguments[2] // third argument each argument can also be set or reassigned: arguments[1] = 'new value'; the arguments object is not an array.
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Atomics.add() - JavaScript
the static atomics.add() method adds a given value at a given position in the array and returns the old value at that position.
... syntax atomics.add(typedarray, index, value) parameters typedarray an integer typed array.
... one of int8array, uint8array, int16array, uint16array, int32array, uint32array, bigint64array, or biguint64array.
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Atomics.and() - JavaScript
the static atomics.and() method computes a bitwise and with a given value at a given position in the array, and returns the old value at that position.
... syntax atomics.and(typedarray, index, value) parameters typedarray an integer typed array.
... one of int8array, uint8array, int16array, uint16array, int32array, uint32array, bigint64array, or biguint64array.
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Atomics.compareExchange() - JavaScript
the static atomics.compareexchange() method exchanges a given replacement value at a given position in the array, if a given expected value equals the old value.
... syntax atomics.compareexchange(typedarray, index, expectedvalue, replacementvalue) parameters typedarray an integer typed array.
... one of int8array, uint8array, int16array, uint16array, int32array, uint32array, bigint64array, or biguint64array.
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Atomics.exchange() - JavaScript
the static atomics.exchange() method stores a given value at a given position in the array and returns the old value at that position.
... syntax atomics.exchange(typedarray, index, value) parameters typedarray an integer typed array.
... one of int8array, uint8array, int16array, uint16array, int32array, uint32array, bigint64array, or biguint64array.
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Atomics.load() - JavaScript
the static atomics.load() method returns a value at a given position in the array.
... syntax atomics.load(typedarray, index) parameters typedarray an integer typed array.
... one of int8array, uint8array, int16array, uint16array, int32array, uint32array, bigint64array, or biguint64array.
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Atomics.notify() - JavaScript
note: this operation works with a shared int32array only.
... it will return 0 on non-shared arraybuffer objects.
... syntax atomics.notify(typedarray, index, count) parameters typedarray a shared int32array.
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Atomics.or() - JavaScript
the static atomics.or() method computes a bitwise or with a given value at a given position in the array, and returns the old value at that position.
... syntax atomics.or(typedarray, index, value) parameters typedarray an integer typed array.
... one of int8array, uint8array, int16array, uint16array, int32array, uint32array, bigint64array, or biguint64array.
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Atomics.sub() - JavaScript
the static atomics.sub() method substracts a given value at a given position in the array and returns the old value at that position.
... syntax atomics.sub(typedarray, index, value) parameters typedarray an integer typed array.
... one of int8array, uint8array, int16array, uint16array, int32array, uint32array, bigint64array, or biguint64array.
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Atomics.xor() - JavaScript
the static atomics.xor() method computes a bitwise xor with a given value at a given position in the array, and returns the old value at that position.
... syntax atomics.xor(typedarray, index, value) parameters typedarray an integer typed array.
... one of int8array, uint8array, int16array, uint16array, int32array, uint32array, bigint64array, or biguint64array.
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Function.prototype.bind() - JavaScript
// does not work with `new (funca.bind(thisarg, args))` if (!function.prototype.bind) (function(){ var slice = array.prototype.slice; function.prototype.bind = function() { var thatfunc = this, thatarg = arguments[0]; var args = slice.call(arguments, 1); if (typeof thatfunc !== 'function') { // closest thing possible to the ecmascript 5 // internal iscallable function throw new typeerror('function.prototype.bind - ' + 'what is trying to be bound is not callable'); ...
... // yes, it does work with `new (funca.bind(thisarg, args))` if (!function.prototype.bind) (function(){ var arrayprototypeslice = array.prototype.slice; function.prototype.bind = function(otherthis) { if (typeof this !== 'function') { // closest thing possible to the ecmascript 5 // internal iscallable function throw new typeerror('function.prototype.bind - what is trying to be bound is not callable'); } var baseargs= arrayprototypeslice.call(arguments, 1), baseargsle...
...s.prototype) { // function.prototype doesn't have a prototype property fnop.prototype = this.prototype; } fbound.prototype = new fnop(); return fbound; }; })(); some of the many differences (there may well be others, as this list does not seriously attempt to be exhaustive) between this algorithm and the specified algorithm are: the partial implementation relies on array.prototype.slice(), array.prototype.concat(), function.prototype.call() and function.prototype.apply(), built-in methods to have their original values.
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Porting the Library Detector - Archive of obsolete content
the bulk of the script is an array of test objects, one for each library.
...when this is triggered, the testlibraries() function builds an array of libraries by iterating through the tests and adding an entry for each library which passes.
...however, instead of maintaining its own state by listening for gbrowser events and updating the user interface, the content script will just run when it's loaded, collect the array of library names, and post it back to main.js: function testlibraries() { var win = unsafewindow; var librarylist = []; for(var i in ld_tests) { var passed = ld_tests[i].test(win); if (passed) { var libraryinfo = { name: i, version: passed.version }; librarylist.push(libraryinfo); } } self.postmessage(librarylist); } testlibraries(); mai...
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How to convert an overlay extension to restartless - Archive of obsolete content
the new way to do this is to use javascript typed arrays.
... specify "arraybuffer" as your data type to get one from your xmlhttprequest.
... to access that data you're going to need a data view to look at your typed array with.
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Supporting search suggestions in search plugins - Archive of obsolete content
your server should then decide upon the suggestions to offer using whatever means it sees fit, and return a json array of results: query string the first element in the array is the original query string.
... completion list an array of suggested search terms.
... the array should be enclosed in square brackets.
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Reading from Files - Archive of obsolete content
var lines = []; while(stream.available()) lines.push(stream.readline()); in this example, each line from a stream is read and added to an array.
... the result is an array containing each of the lines in the file.
...an additional method that is useful here is the readbytearray method.
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Adding Methods to XBL-defined Elements - Archive of obsolete content
elements with an xbl behavior attached to them have a special property which holds an array of the anonymous child elements inside it.
... each element of the array stores each direct child element of the xbl-defined element.
...the function returns an array of elements, which is the anonymous content.
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New in JavaScript 1.3 - Archive of obsolete content
changed functionality in javascript 1.3 changes to date to conform with ecma-262 new constructor date(year, month, day, [,hours [, minutes [, seconds [, milliseconds ]]]]) additional method parameters: setmonth(month[, date]) sethours(hours[, min[, sec[, ms]]]) setminutes(min[, sec[, ms]]) setseconds(sec[, ms]) the length of an array (property length) is now an unsigned, 32-bit integer.
... array.prototype.push(): in javascript 1.2, the push method returned the last element added to an array.
... under javascript 1.3, push returns the new length of the array.
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Storing the information you need — Variables - Learn web development
arrays an array is a single object that contains multiple values enclosed in square brackets and separated by commas.
... try entering the following lines into your console: let mynamearray = ['chris', 'bob', 'jim']; let mynumberarray = [10, 15, 40]; once these arrays are defined, you can access each value by their location within the array.
... try these lines: mynamearray[0]; // should return 'chris' mynumberarray[2]; // should return 40 the square brackets specify an index value corresponding to the position of the value you want returned.
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source-editor.jsm
retoffset(); object getcaretposition(); object getselection(); void setcaretoffset(number aoffset); void setcaretposition(number aline, [optional] number acolumn, [optional] number aalign); void setselection(number astart, number aend); breakpoint management void addbreakpoint(number alineindex, [optional] string acondition); array getbreakpoints(); boolean removebreakpoint(number alineindex); properties attribute type description dirty boolean set this value to false whenever you save the text; the editor will update it to true when the content is changed.
... getbreakpoints returns an array of all of the breakpoints currently set on the code in the editor instance.
... array getbreakpoints(); parameters none.
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JSProtoKey
mxr search for jsproto_null jsproto_object object mxr search for jsproto_object jsproto_function function mxr search for jsproto_function jsproto_array array mxr search for jsproto_array jsproto_boolean boolean mxr search for jsproto_boolean jsproto_json json mxr search for jsproto_json jsproto_date date mxr search for jsproto_date jsproto_math math mxr search for jsproto_math jsproto_number number mxr search for jsproto_number jsproto_string ...
...ntaxerror syntaxerror mxr search for jsproto_syntaxerror jsproto_typeerror typeerror mxr search for jsproto_typeerror jsproto_urierror urierror mxr search for jsproto_urierror jsproto_iterator iterator mxr search for jsproto_iterator jsproto_stopiteration stopiteration mxr search for jsproto_stopiteration jsproto_arraybuffer arraybuffer mxr search for jsproto_arraybuffer jsproto_int8array int8array mxr search for jsproto_int8array jsproto_uint8array uint8array mxr search for jsproto_uint8array jsproto_int16array int16array mxr search for jsproto_int16array jsproto_uint16array uint16array mxr search for jsproto_uint16array jspro...
...to_int32array int32array mxr search for jsproto_int32array jsproto_uint32array uint32array mxr search for jsproto_uint32array jsproto_float32array float32array mxr search for jsproto_float32array jsproto_float64array float64array mxr search for jsproto_float64array jsproto_uint8clampedarray uint8clampedarray mxr search for jsproto_uint8clampedarray jsproto_proxy proxy mxr search for jsproto_proxy jsproto_weakmap weakmap mxr search for jsproto_weakmap jsproto_map map mxr search for jsproto_map jsproto_set set mxr search for jsproto_set jsproto_dataview dataview mxr search for jsproto_dataview jsproto_symbol symbol added in sp...
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JS_DefineFunctions
fs const jsfunctionspec * a null-terminated array of function specifications.
... each element of the array defines an individual function.
... fs is a pointer to the first element of an array of jsfunctionspec records.
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JS_DefineProperties
ps const jspropertyspec * pointer to the first element of an array containing names, ids, flags, and getproperty and setproperty method for the properties to create.
... the last array element must contain 0-valued members.
...ps is a pointer to the first element of an array of jspropertyspec structures.
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nsICryptoHash
1.0 66 introduced gecko 1.8 inherits from: nsisupports last changed in gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) method overview acstring finish(in prbool aascii); void init(in unsigned long aalgorithm); void initwithstring(in acstring aalgorithm); void update([const, array, size_is(alen)] in octet adata, in unsigned long alen); void updatefromstream(in nsiinputstream astream, in unsigned long alen); constants hash algorithms these constants are used by the init() method to indicate which hashing function to use.
... exceptions thrown ns_error_invalid_arg indicates that an unsupported algorithm type was passed update() adds an array of data to be hashed to the object.
... void update( [const, array, size_is(alen)] in octet adata, in unsigned long alen ); parameters adata a buffer to calculate the hash over.
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nsINavHistoryService
in prtime atime, in nsiuri areferringuri, in long atransitiontype, in boolean aisredirect, in long long asessionid); obsolete since gecko 22.0 nsinavhistoryquery getnewquery(); nsinavhistoryqueryoptions getnewqueryoptions(); nsinavhistoryresult executequery(in nsinavhistoryquery aquery, in nsinavhistoryqueryoptions options); nsinavhistoryresult executequeries([array,size_is(aquerycount)] in nsinavhistoryquery aqueries, in unsigned long aquerycount, in nsinavhistoryqueryoptions options); void querystringtoqueries(in autf8string aquerystring, [array, size_is(aresultcount)] out nsinavhistoryquery aqueries, out unsigned long aresultcount, out nsinavhistoryqueryoptions options); autf8string queriestoquerystring([array, size_is(aquerycount)] in n...
...it executes an array of queries.
... nsinavhistoryresult executequeries( [array,size_is(aquerycount)] in nsinavhistoryquery aqueries, in unsigned long aquerycount, in nsinavhistoryqueryoptions options ); parameters aqueries the queries object.
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nsIPlacesView
methods getdragableselection() returns an array of selected nsinavhistoryresultnode objects that can be dragged from the view.
... return value an array of nsinavhistoryresultnode objects.
... getremovableselectionranges() returns an array whose elements are themselves arrays of nsinavhistoryresultnode objects that can be removed from the view.
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nsITaggingService
ce;1"] .getservice(components.interfaces.nsitaggingservice); method overview void taguri(in nsiuri auri, in nsivariant atags); void untaguri(in nsiuri auri, in nsivariant atags); nsivariant geturisfortag(in astring atag); nsivariant gettagsforuri(in nsiuri auri, [optional] out unsigned long length, [retval, array, size_is(length)] out wstring atags); attributes attribute type description alltags nsivariant retrieves all tags used to tag uris in the data-base (sorted by name).
... atags array of tags to set for the given uri.
... atags array of tags to unset.
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Dominators view - Firefox Developer Tools
in particular, allocation stacks are currently only recorded for objects, not for arrays, strings, or internal structures.
... we'll use the monster allocation example, which creates three arrays, each containing 5000 monsters, each monster having a randomly-generated name.
... taking a snapshot to see what it looks like in the dominators view: load the page enable the memory tool in the settings, if you haven't already open the memory tool check "record call stacks" press the button labeled "make monsters!" take a snapshot switch to the "dominators" view analyzing the dominators tree you'll see the three arrays as the top three gc roots, each retaining about 23% of the total memory usage: if you expand an array, you'll see the objects (monsters) it contains.
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AudioParam.setValueCurveAtTime() - Web APIs
the curve is a linear interpolation between the sequence of values defined in an array of floating-point values, which are scaled to fit into the given interval starting at starttime and a specific duration.
... syntax var paramref = param.setvaluecurveattime(values, starttime, duration); parameters values an array of floating-point numbers representing the value curve the audioparam will change through along the specified duration.
... every value in the array must be a finite number; if any value is nan, infinity, or -infinity, a typeerror exception is thrown.
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Blob - Web APIs
constructor blob() returns a newly created blob object which contains a concatenation of all of the data in the array passed into the constructor.
... instance methods blob.prototype.arraybuffer() returns a promise that resolves with an arraybuffer containing the entire contents of the blob as binary data.
...for example, to construct a blob from a json string: const obj = {hello: 'world'}; const blob = new blob([json.stringify(obj, null, 2)], {type : 'application/json'}); creating a url representing the contents of a typed array the following code creates a javascript typed array and creates a new blob containing the typed array's data.
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Using the CSS Typed Object Model - Web APIs
let's start by adding some css to our example, including a custom property and an inhertable property: p { font-weight: bold; } a { --color: red; color: var(--color); } instead of getting all the properties, we create an array of properties of interest and use the stylepropertymapreadonly.get() method to get each of their values: <p> <a href="https://example.com">link</a> </p> <dl id="regurgitation"></dl> // get the element const myelement = document.queryselector('a'); // get the <dl> we'll be populating const styleslist = document.queryselector('#regurgitation'); // retrieve all computed styles with computed...
...stylemap() const allcomputedstyles = myelement.computedstylemap(); // array of properties we're interested in const ofinterest = ['font-weight', 'border-left-color', 'color', '--color']; // iterate through our properties of interest for ( let i = 0; i < ofinterest.length; i++ ) { // properties const cssproperty = document.createelement('dt'); cssproperty.appendchild(document.createtextnode(ofinterest[i])); styleslist.appendchild(cssproperty); // values const cssvalue = document.createelement('dd'); cssvalue.appendchild(document.createtextnode( allcomputedstyles.get(ofinterest[i]))); styleslist.appendchild(cssvalue); } we included border-left-color to demonstrate that, had we included all the properties, every value that defaults to currentcolor (including caret-color, ou...
...try adding some css, such as a width for this paragraph, or adding a css property to the ofinterst array.
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Timing element visibility with the Intersection Observer API - Web APIs
although many aspects of this example will not match real world usage (in particular, the articles all have the same text and aren't loaded from a database, and there are just a handful of simple text-only ads that are selected from an array), this should provide enough understanding of the api to quickly learn how to apply the intersection observer api to your own site.
...and the threshold is set to an array containing the values 0.0 and 0.75; this will cause our callback to execute whenever a targeted element becomes completely obscured or first starts to become unobscured (intersection ratio 0.0) or passes through 75% visible in either direction (intersection ratio 0.75).
...for each observer, a list of targets that have done so is compiled, and sent to the observer's callback as an array of intersectionobserverentry objects.
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SubtleCrypto.exportKey() - Web APIs
otherwise the promise fulfills with an arraybuffer containing the key.
... raw export this example exports an aes key as an arraybuffer containing the bytes for the key.
...*/ async function exportcryptokey(key) { const exported = await window.crypto.subtle.exportkey( "raw", key ); const exportedkeybuffer = new uint8array(exported); const exportkeyoutput = document.queryselector(".exported-key"); exportkeyoutput.textcontent = `[${exportedkeybuffer}]`; } /* generate an encrypt/decrypt secret key, then set up an event listener on the "export" button.
...And 4 more matches

SubtleCrypto.wrapKey() - Web APIs
return value result is a promise that fulfills with an arraybuffer containing the encrypted exported key.
...*/ async function wrapcryptokey(keytowrap) { // get the key encryption key const keymaterial = await getkeymaterial(); salt = window.crypto.getrandomvalues(new uint8array(16)); const wrappingkey = await getkey(keymaterial, salt); return window.crypto.subtle.wrapkey( "raw", keytowrap, wrappingkey, "aes-kw" ); } /* generate an encrypt/decrypt secret key, then wrap it.
...*/ async function wrapcryptokey(keytowrap) { // get the key encryption key const keymaterial = await getkeymaterial(); salt = window.crypto.getrandomvalues(new uint8array(16)); const wrappingkey = await getkey(keymaterial, salt); iv = window.crypto.getrandomvalues(new uint8array(12)); return window.crypto.subtle.wrapkey( "pkcs8", keytowrap, wrappingkey, { name: "aes-gcm", iv: iv } ); } /* generate a sign/verify key pair, then wrap the private key.
...And 4 more matches

WebGLRenderingContext.texImage2D() - Web APIs
syntax // webgl1: void gl.teximage2d(target, level, internalformat, width, height, border, format, type, arraybufferview?
...ge2d(target, level, internalformat, width, height, border, format, type, htmlvideoelement source); void gl.teximage2d(target, level, internalformat, width, height, border, format, type, imagebitmap source); void gl.teximage2d(target, level, internalformat, width, height, border, format, type, imagedata source); void gl.teximage2d(target, level, internalformat, width, height, border, format, type, arraybufferview srcdata, srcoffset); parameters target a glenum specifying the binding point (target) of the active texture.
... rgba unsigned_short_4_4_4_4 4 2 rgba unsigned_short_5_5_5_1 4 2 rgb unsigned_short_5_6_5 3 2 luminance_alpha unsigned_byte 2 2 luminance unsigned_byte 1 1 alpha unsigned_byte 1 1 other possible values in webgl2 for the versions of teximage2d that take an arraybufferview or a glintptr offset sized format base format r bits g bits b bits a bits shared bits color renderable texture filterable r8 red 8 ● ● r8_snorm red s8 ● rg8 rg 8 8 ● ● rg8_snorm r...
...And 4 more matches

WebGLRenderingContext.texSubImage2D() - Web APIs
syntax // webgl 1: void gl.texsubimage2d(target, level, xoffset, yoffset, width, height, format, type, arraybufferview?
...id gl.texsubimage2d(target, level, xoffset, yoffset, width, height, format, type, htmlvideoelement source); void gl.texsubimage2d(target, level, xoffset, yoffset, width, height, format, type, imagebitmap source); void gl.texsubimage2d(target, level, xoffset, yoffset, width, height, format, type, imagedata source); void gl.texsubimage2d(target, level, xoffset, yoffset, width, height, format, type, arraybufferview srcdata, srcoffset); parameters target a glenum specifying the binding point (target) of the active texture.
... xoffset a glint specifying the lower left texel x coordinate of a width-wide by height-wide rectangular subregion of the texture array.
...And 4 more matches

Using textures in WebGL - Web APIs
const level = 0; const internalformat = gl.rgba; const width = 1; const height = 1; const border = 0; const srcformat = gl.rgba; const srctype = gl.unsigned_byte; const pixel = new uint8array([0, 0, 255, 255]); // opaque blue gl.teximage2d(gl.texture_2d, level, internalformat, width, height, border, srcformat, srctype, pixel); const image = new image(); image.onload = function() { gl.bindtexture(gl.texture_2d, texture); gl.teximage2d(gl.texture_2d, level, internalformat, srcformat, srctype, image); // webgl1 has di...
... const texturecoordbuffer = gl.createbuffer(); gl.bindbuffer(gl.array_buffer, texturecoordbuffer); const texturecoordinates = [ // front 0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0, // back 0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0, // top 0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0, // bottom 0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0, // right 0.0, 0.0, 1.0, 0.0, 1...
....0, 1.0, 0.0, 1.0, // left 0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0, ]; gl.bufferdata(gl.array_buffer, new float32array(texturecoordinates), gl.static_draw); ...
...And 4 more matches

WebGL model view projection - Web APIs
var data = new float32array([ //triangle 1 settings.left, settings.bottom, settings.depth, settings.right, settings.bottom, settings.depth, settings.left, settings.top, settings.depth, //triangle 2 settings.left, settings.top, settings.depth, settings.right, settings.bottom, settings.depth, settings.right, settings.top, settings.depth ]); // use webgl to draw this onto the ...
... // performance note: creating a new array buffer for every draw call is slow.
... var gl = this.gl; // create a buffer and bind the data var buffer = gl.createbuffer(); gl.bindbuffer(gl.array_buffer, buffer); gl.bufferdata(gl.array_buffer, data, gl.static_draw); // setup the pointer to our attribute data (the triangles) gl.enablevertexattribarray(this.positionlocation); gl.vertexattribpointer(this.positionlocation, 3, gl.float, false, 0, 0); // setup the color uniform that will be shared across all triangles gl.uniform4fv(this.colorlocation, settings.color); // draw the triangles to the screen gl.drawarrays(gl.triangles, 0, 6); } the shaders are the bits of code written in glsl that take our data points and ultimately render them to the screen.
...And 4 more matches

Using IIR filters - Web APIs
both of these parameters are arrays, neither of which can be larger than 20 items.
... we need to create three arrays.
... one of frequency values for which we want to receive the magnitude response and phase response for, and two empty arrays to receive the data.
...And 4 more matches

Atomics.store() - JavaScript
the static atomics.store() method stores a given value at the given position in the array and returns that value.
... syntax atomics.store(typedarray, index, value) parameters typedarray an integer typed array.
... one of int8array, uint8array, int16array, uint16array, int32array, uint32array, bigint64array, or biguint64array.
...And 4 more matches

Atomics.wait() - JavaScript
the static atomics.wait() method verifies that a given position in an int32array still contains a given value and if so sleeps, awaiting a wakeup or a timeout.
... note: this operation only works with a shared int32array and may not be allowed on the main thread.
... syntax atomics.wait(typedarray, index, value[, timeout]) parameters typedarray a shared int32array.
...And 4 more matches

DataView - JavaScript
the dataview view provides a low-level interface for reading and writing multiple number types in a binary arraybuffer, without having to care about the platform's endianness.
... var littleendian = (function() { var buffer = new arraybuffer(2); new dataview(buffer).setint16(0, 256, true /* littleendian */); // int16array uses the platform's endianness.
... return new int16array(buffer)[0] === 256; })(); console.log(littleendian); // true or false 64-bit integer values because javascript does not currently include standard support for 64-bit integer values, dataview does not offer native 64-bit operations.
...And 4 more matches

Object - JavaScript
object.entries() returns an array containing all of the [key, value] pairs of a given object's own enumerable string properties.
... object.getownpropertynames() returns an array containing the names of all of the given object's own enumerable and non-enumerable properties.
... object.getownpropertysymbols() returns an array of all symbol properties found directly upon a given object.
...And 4 more matches

Promise.all() - JavaScript
the promise.all() method takes an iterable of promises as an input, and returns a single promise that resolves to an array of the results of the input promises.
... syntax promise.all(iterable); parameters iterable an iterable object such as an array.
... fulfillment the returned promise is fulfilled with an array containing all the values of the iterable passed as argument (also non-promise values).
...And 4 more matches

Planned changes to shared memory - JavaScript
there is standardization work ongoing that enables developers to create sharedarraybuffer objects again, but changes are needed in order to be use these across threads (i.e., postmessage() for sharedarraybuffer objects throws by default).
... for top-level documents, two headers will need to be set: cross-origin-opener-policy with same-origin as value (protects your origin from attackers) cross-origin-embedder-policy with require-corp as value (protects victims from your origin) with these two headers set, postmessage() will no longer throw for sharedarraybuffer objects and shared memory across threads is therefore available.
... sharedarraybuffer objects are in principle always available, but unfortunately the constructor on the global object is hidden, unless the two headers mentioned above are set, for compatibility with web content.
...And 4 more matches

for...in - JavaScript
objects created from built–in constructors like array and object have inherited non–enumerable properties from object.prototype and string.prototype, such as string's indexof() method or object's tostring() method.
... array iteration and for...in note: for...in should not be used to iterate over an array where the index order is important.
... array indexes are just enumerable properties with integer names and are otherwise identical to general object properties.
...And 4 more matches

simple-storage - Archive of obsolete content
to store a value, just assign it to a property on storage: var ss = require("sdk/simple-storage"); ss.storage.myarray = [1, 1, 2, 3, 5, 8, 13]; ss.storage.myboolean = true; ss.storage.mynull = null; ss.storage.mynumber = 3.1337; ss.storage.myobject = { a: "foo", b: { c: true }, d: null }; ss.storage.mystring = "o frabjous day!"; you can store array, boolean, number, object, null, and string values.
... constructing arrays be careful to construct array objects conditionally in your code, or you may zero them each time the construction code runs.
... of pages the user visits: var ss = require("sdk/simple-storage"); ss.storage.pages = []; require("sdk/tabs").on("ready", function(tab) { ss.storage.pages.push(tab.url); }); require("sdk/ui/button/action").actionbutton({ id: "read", label: "read", icon: "./read.png", onclick: function() { console.log(ss.storage.pages); } }); but this isn't going to work, because it empties the array each time the add-on runs (for example, each time firefox is started).
...And 3 more matches

Migrating from Internal Linkage to Frozen Linkage - Archive of obsolete content
these classes must now be created using xpcom: // nsisupportsarray is bad!
...use nsiarray instead.
... (see xpcom:arrays.) nscomptr<nsisupportsarray> array; - rv = ns_newisupportsarray(getter_addrefs(array)); + array = do_createinstance(ns_supportsarray_contractid); - nscomptr<nsiinputstream> rawstream;- rv = ns_newbyteinputstream(getter_addrefs(rawstream),- (const char*)data, length); + nscomptr<nsistringinputstream> rawstream =+ do_createinstance(ns_stringinputstream_contractid, &rv);+ ns_ensure_success(rv, rv);++ rv = rawstream->setdata((const char*)data, length); ns_ensure_success(rv, rv); nsistringinputstream is not frozen (and thus, not available in the gecko sdk as currently published).
...And 3 more matches

Appendix E: DOM Building and Insertion (HTML & XUL) - Archive of obsolete content
"http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" }; jsontodom.defaultnamespace = jsontodom.namespaces.html; function jsontodom(jsontemplate, doc, nodes) { function namespace(name) { var reelemnameparts = /^(?:(.*):)?(.*)$/.exec(name); return { namespace: jsontodom.namespaces[reelemnameparts[1]], shortname: reelemnameparts[2] }; } // note that 'elemnameorarray' is: either the full element name (eg.
... [html:]div) or an array of elements in json notation function tag(elemnameorarray, elemattr) { // array of elements?
... if (array.isarray(elemnameorarray)) { var frag = doc.createdocumentfragment(); array.foreach(arguments, function(thiselem) { frag.appendchild(tag.apply(null, thiselem)); }); return frag; } // single element?
...And 3 more matches

MCD, Mission Control Desktop, AKA AutoConfig - Archive of obsolete content
userinfo.envuser = getenv("username"); // username userinfo.envhome = getenv("home"); // user home directory var ldaphost = "example.com"; var ldapbase = "dc=company,dc=local"; if( userinfo.envuser ) { var ldapfilter = "samaccountname=" + userinfo.envuser; } else { throw("couldn't get uid from the environment"); } // ldap attributes to retrieve from the server var ldapattrs = new array( "cn", "mail", "samaccountname" ); // add more attributes here, if needed) // define how to process ldap results before we make the call function processldapvalues(queryresults) { if( queryresults ) { // build the userinfo object for later use for( var attr in ldapattrs ) { userinfo[ ldapattrs[attr] ] = getldapvalue( queryresults, ldapattrs[attr] ); } } else { throw( "n...
...o ldap results" ); } } // call upon ldap for the values in ldapattrs array, // uses the previous processldapvalues() getldapattributes( ldaphost, ldapbase, ldapfilter, ldapattrs.join(",") ); // create account // see also http://blog.deanandadie.net/2010/06/easy-thunderbird-account-management-using-mcd/ // identity defaultpref("mail.identity.id1.fullname", userinfo.cn ); defaultpref("mail.identity.id1.smtpserver", "smtp1" ); defaultpref("mail.identity.id1.useremail", userinfo.mail ); // imap server settings defaultpref("mail.server.server1.hostname", "myimap.server.com" ); defaultpref("mail.server.server1.name", userinfo.mail ); defaultpref("mail.server.server1.port", 993 ); defaultpref("mail.server.server1.sockettype", 3 ); defaultpref("mail.server.server1.type", "imap" ); defaultpref("mail...
... the option --disable-crashreporter is necessary if you get compile error at this stage of the build gmake[7]: entering directory `/usr/local/moz2/commsrc/mozilla/toolkit/crashreporter/google-breakpad/src/common/linux' dump_symbols.cc build then start building [root@b008-02 commsrc]# time make -f client.mk build rm -f ../../mozilla/dist/bin/testcookie if test -f ../../mozilla/dist/bin/testtarray; then cp ../../mozilla/dist/bin/testtarray ../../mozilla/dist/bin/testcookie; fi; gmake[5]: quittant le répertoire « /usr/local/moz/commsrc/mail/app » gmake[4]: quittant le répertoire « /usr/local/moz/commsrc/mail » gmake[3]: quittant le répertoire « /usr/local/moz/commsrc » gmake[2]: quittant le répertoire « /usr/local/moz/commsrc » make[1]: quittant le rép...
...And 3 more matches

New in JavaScript 1.2 - Archive of obsolete content
arrays can now be created using literal notation (inspired by list literal syntax from python 1.x).
... arguments new properties function.arity new methods array.prototype.concat() array.prototype.slice() string.prototype.charcodeat() string.prototype.concat() string.fromcharcode() string.prototype.match() string.prototype.replace() string.prototype.search() string.prototype.slice() string.prototype.substr() new operators delete equality operators (== and !=) new statements labeled statements switch do...while import export other new features regular expressions signed scripts changed functionality in javascript 1.2 you can now nest functions within functions.
... array.prototype.sort() now works on all platforms.
...And 3 more matches

Useful string methods - Learn web development
in each exercise below, we have an array of strings, and a loop that processes each value in the array and displays it in a bulleted list.
... you don't need to understand arrays or loops right now — these will be explained in future articles.
... filtering greeting messages in the first exercise we'll start you off simple — we have an array of greeting card messages, but we want to sort them to list just the christmas messages.
...And 3 more matches

JavaScript object basics - Learn web development
the syntax always follows this pattern: const objectname = { member1name: member1value, member2name: member2value, member3name: member3value }; the value of an object member can be pretty much anything — in our person object we've got a string, a number, two arrays, and two functions.
...sending a single object is much more efficient than sending several items individually, and it is easier to work with than an array, when you want to identify individual items by name.
...next you write a dot, then the item you want to access — this can be the name of a simple property, an item of an array property, or a call to one of the object's methods, for example: person.age person.interests[1] person.bio() sub-namespaces it is even possible to make the value of an object member another object.
...And 3 more matches

Componentizing our React app - Learn web development
since we have more than one task, an array of objects would work well in representing this data.
...the final line of src/index.js should read like this: reactdom.render(<app tasks={data} />, document.getelementbyid("root")); this array is now available to the app component as props.tasks.
... rendering with iteration to render our array of objects, we have to turn each one into a <todo /> component.
...And 3 more matches

HTMLIFrameElement.sendTouchEvent()
x an array of numbers representing the x position of each touch point relative to the browser <iframe>'s visible area in css pixels.
... y an array of numbers representing the y position of each touch point relative to the browser <iframe>'s visible area in css pixels.
... rx an array of numbers representing the x radius of each touch point in css pixels.
...And 3 more matches

Http.jsm
httprequest supports the following parameters: name meaning headers an array of headers postdata this can be: a string: send it as is an array of parameters: encode as form values null/undefined: no post data.
... headers or post data are given as an array of arrays, for each inner array the first value is the key and the second is the value.
...postdata can be of 2 different types: a string or an array of parameters.
...And 3 more matches

L20n Javascript API
ctx.localize(['hello', 'new'], function(l10n) { var node = document.queryselector('[data-l10n-id=hello]'); node.textcontent = l10n.entities.hello.value; node.classlist.remove('hidden'); }); ctx.registerlocales(defaultlocale: string?, availablelocales: array<string>?) register the default locale of the context instance, as well as all other locales available to the context instance before the language negotiation.
... availablelocales is an array of all locales available to the context instance.
... this array (with defaultlocale appended to it if it is not already present) will be used to negotiate the fallback chain for the user.
...And 3 more matches

JSFunctionSpec
this no longer guarantees anything about the vp array.
...an application typically has an array of jsfunctionspec to define all the functions for an object and calls js_definefunctions or js_initclass to create the functions and assign them to an object.
... jsfunctionspec can also be used to define an array element rather than a named property.
...And 3 more matches

JS_Enumerate
get an array of the enumerable properties of a given object.
... syntax jsidarray * js_enumerate(jscontext *cx, js::handleobject obj); name type description cx jscontext * the context in which to enumerate object properties.
...on success, js_enumerate returns a pointer to the first element of an array of property ids.
...And 3 more matches

nsIContentPrefService2
void getbysubdomainandname(in astring domain, in astring name, in nsiloadcontext context, in nsicontentprefcallback2 callback); nsicontentpref getcachedbydomainandname(in astring domain, in astring name, in nsiloadcontext context); void getcachedbysubdomainandname(in astring domain, in astring name, in nsiloadcontext context, out unsigned long len, [retval,array,size_is(len)] out nsicontentpref prefs); nsicontentpref getcachedglobal(in astring name, in nsiloadcontext context); void getglobal(in astring name, in nsiloadcontext context, in nsicontentprefcallback2 callback); void removealldomains(in nsiloadcontext context, [optional] in nsicontentprefcallback2 callback); void removeallglobals(i...
...the preferences are returned in an array through the out-parameter.
... if a preference for a particular subdomain is known not to exist, then an object corresponding to that preference will be present in the array, and, as with getcachedbydomainandname(), its value attribute will be undefined.
...And 3 more matches

nsIDOMMozNetworkStatsManager
to know in advance which kind of origin is available, the moznetworkstatsmanager.getavailablenetworks method returns an array of interfaces.
...to know in advance which kind of origin is available, the moznetworkstatsmanager.getavailablenetworks method returns an array of interfaces.
...to know in advance which kind of origin is available, the moznetworkstatsmanager.getavailablenetworks method returns an array of interfaces.
...And 3 more matches

nsIMsgDBHdr
void markflagged(in boolean flagged); void markhasattachments(in boolean hasattachments); void setprioritystring(in string priority); unsigned long orflags(in unsigned long flags); unsigned long andflags(in unsigned long flags); void setreferences(in string references); acstring getstringreference(in long refnum); void setrecipientsarray(in string names, in string addresses,in unsigned long numaddresses); void setcclistarray(in string names, in string addresses,in unsigned long numaddresses); void setbcclistarray(in string names, in string addresses,in unsigned long numaddresses);new in thunderbird 3.1 [noscript] void getauthorcollationkey(out octetptr key, out unsigned long len); [noscript] vo...
...the value here will effectively be the unparsed header content; it may be easier to set this using setrecipientsarray.
... setrecipientsarray() uses the header parser to recreate the recipients header from an array of names and addresses.
...And 3 more matches

Component; nsIPrefBranch
oolean getboolpref(in string aprefname, requires gecko 54 [optional] in boolean adefaultvalue); string getcharpref(in string aprefname,requires gecko 54 [optional] in string adefaultvalue); requires gecko 58 utf8tring getstringpref(in string aprefname, [optional] in utf8string adefaultvalue); void getchildlist(in string astartingat, [optional] out unsigned long acount, [array, size_is(acount), retval] out string achildarray); void getcomplexvalue(in string aprefname, in nsiidref atype, [iid_is(atype), retval] out nsqiresult avalue); long getintpref(in string aprefname,requires gecko 54 [optional] in long adefaultvalue); long getpreftype(in string aprefname); void lockpref(in string aprefname); boolean prefhasuservalue(in st...
... getchildlist() returns an array of strings representing the child preferences of the root of this branch.
... (to call from javascript use children = nsiprefbranch.getchildlist("",obj), which will fill in obj.value with the count and return an array of keys!
...And 3 more matches

CData
note: this is never ctypes.void_t or an array type with an unspecified length.
... methods available on string objects these methods must be called on objects that are arrays or pointers to 8-bit or 16-bit character or integer types, terminated by a null character.
... readstring() converts a character array to a javascript string.
...And 3 more matches

StructType
fields optional an array of field descriptors, describing all the entries in the structure.
... describing fields the fields array is comprised of field descriptors, one for each field in the structure.
...a complete field descriptor list might look like this: [ {'serialnumber': ctypes.int}, {'username': ctypes.char.ptr} ] properties property type description fields ctype[] a sealed array of field descriptors.
...And 3 more matches

Debugger.Object - Firefox Developer Tools
for example: function h() { var i = function() {}; // display name: h/i f(function () {}); // display name: h/< } var s = f(function () {}); // display name: s< parameternames if the referent is a debuggee function, the names of the its parameters, as an array of strings.
... if the referent is a host function for which parameter names are not available, return an array with one element per parameter, each of which is undefined.
... if the referent is a function proxy, return an empty array.
...And 3 more matches

AnalyserNode.getByteTimeDomainData() - Web APIs
the getbytetimedomaindata() method of the analysernode interface copies the current waveform, or time-domain, data into a uint8array (unsigned byte array) passed into it.
... if the array has fewer elements than the analysernode.fftsize, excess elements are dropped.
... syntax const audioctx = new audiocontext(); const analyser = audioctx.createanalyser(); const dataarray = new uint8array(analyser.fftsize); // uint8array should be the same length as the fftsize analyser.getbytetimedomaindata(dataarray); // fill the uint8array with data returned from getbytetimedomaindata() parameters array the uint8array that the time domain data will be copied to.
...And 3 more matches

AnalyserNode.getFloatTimeDomainData() - Web APIs
the getfloattimedomaindata() method of the analysernode interface copies the current waveform, or time-domain, data into a float32array array passed into it.
... if the array has fewer elements than the analysernode.fftsize, excess elements are dropped.
... syntax var audioctx = new audiocontext(); var analyser = audioctx.createanalyser(); var dataarray = new float32array(analyser.fftsize); // float32array needs to be the same length as the fftsize analyser.getfloattimedomaindata(dataarray); // fill the float32array with data returned from getfloattimedomaindata() parameters array the float32array that the time domain data will be copied to.
...And 3 more matches

AnalyserNode - Web APIs
analysernode.getfloatfrequencydata() copies the current frequency data into a float32array array passed into it.
... analysernode.getbytefrequencydata() copies the current frequency data into a uint8array (unsigned byte array) passed into it.
... analysernode.getfloattimedomaindata() copies the current waveform, or time-domain, data into a float32array array passed into it.
...And 3 more matches

BaseAudioContext.createIIRFilter() - Web APIs
syntax var iirfilter = audiocontext.createiirfilter(feedforward, feedback); parameters feedforward an array of floating-point values specifying the feedforward (numerator) coefficients for the transfer function of the iir filter.
... the maximum length of this array is 20, and at least one value must be nonzero.
... feedback an array of floating-point values specifying the feedback (denominator) coefficients for the transfer function of the iir filter.
...And 3 more matches

CanvasRenderingContext2D.setLineDash() - Web APIs
it uses an array of values that specify alternating lengths of lines and gaps which describe the pattern.
... note: to return to using solid lines, set the line dash list to an empty array.
... syntax ctx.setlinedash(segments); parameters segments an array of numbers that specify distances to alternately draw a line and a gap (in coordinate space units).
...And 3 more matches

Crypto.getRandomValues() - Web APIs
the array given as the parameter is filled with random numbers (random in its cryptographic meaning).
... syntax typedarray = cryptoobj.getrandomvalues(typedarray); parameters typedarray an integer-based typedarray, that is an int8array, a uint8array, an int16array, a uint16array, an int32array, or a uint32array.
... all elements in the array are overwritten with random numbers.
...And 3 more matches

Using the Gamepad API - Web APIs
the index property also functions as the index into the array returned by navigator.getgamepads().
... the navigator.getgamepads() method returns an array of all devices currently visible to the webpage, as gamepad objects (the first value is always null, so null will be returned if there are no gamepads connected.) this can then be used to get the same information.
... buttons: an array of gamepadbutton objects representing the buttons present on the device.
...And 3 more matches

Basic concepts - Web APIs
a key can be one of the following types: string, date, float, a binary blob, and array.
... for arrays, the key can range from an empty value to infinity.
... and you can include an array within an array.
...And 3 more matches

Recording a media element - Web APIs
line 3 creates an empty array, data, which will be used to hold the blobs of media data provided to our ondataavailable event handler.
...the event handler simply pushes the blob onto the data array.
...once that resolves, the array data is returned by startrecording() to its caller.
...And 3 more matches

MediaTrackConstraints - Web APIs
properties of all media tracks deviceid a constraindomstring object specifying a device id or an array of device ids which are acceptable and/or required.
... groupid a constraindomstring object specifying a group id or an array of group ids which are acceptable and/or required.
...this is either an object in the form { x:value, y:value } or an array of such objects, where value is a double-precision integer.
...And 3 more matches

Microdata DOM API - Web APIs
the propertynodelist object can be used to obtain all the values at once usingits getvalues method, which returns an array of all the values.
...nameditem(domstring name); // shadows inherited nameditem() readonly attribute domstring[] names; }; typedef sequence<any> propertyvaluearray; interface propertynodelist : nodelist { propertyvaluearray getvalues(); }; collection .
...names returns an array with the property names of the elements in the collection.
...And 3 more matches

RTCRtpCapabilities - Web APIs
the rtcrtpcapabilities dictionary is a data type used to describe the capabilities of an rtcrtpsender or rtcrtpreceiver in response to a call to the rtcrtpsender.getcapabilities() or rtcrtpreceiver.getcapabilities() static functions, both of which return an array of rtcrtpcapabilities objects.
... an rtcrtpcapabilities object contains an array of objects conforming to rtcrtpcodeccapability (each describing the capabilities of one codec) and an array of the supported rtp header extensions for that codec.
... properties codecs an array of rtcrtpcodeccapability objects, each describing one of the codecs supported by the rtcrtpsender or rtcrtpreceiver.
...And 3 more matches

SubtleCrypto.deriveBits() - Web APIs
the derivebits() method of the subtlecrypto interface can be used to derive an array of bits from a base key.
...it returns a promise which will be fulfilled with an arraybuffer containing the derived bits.
... this method is very similar to subtlecrypto.derivekey(), except that derivekey() returns a cryptokey object rather than an arraybuffer.
...And 3 more matches

Vibration API - Web APIs
the pattern may consist of either a single integer, describing the number of milliseconds to vibrate, or an array of integers describing a pattern of vibrations and pauses.
... a single vibration you may pulse the vibration hardware one time by specifying either a single value or an array consisting of only one value: window.navigator.vibrate(200); window.navigator.vibrate([200]); both of these examples vibrate the device for 200 ms.
... vibration patterns an array of values describes alternating periods in which the device is vibrating and not vibrating.
...And 3 more matches

WebGL2RenderingContext.getBufferSubData() - Web APIs
the webgl2renderingcontext.getbuffersubdata() method of the webgl 2 api reads data from a buffer binding point and writes them to an arraybuffer or sharedarraybuffer.
... syntax void gl.getbuffersubdata(target, srcbyteoffset, arraybufferview dstdata, optional dstoffset, optional length); parameters target a glenum specifying the binding point (target).
... possible values: gl.array_buffer: buffer containing vertex attributes, such as vertex coordinates, texture coordinate data, or vertex color data.
...And 3 more matches

WebGL2RenderingContext.vertexAttribIPointer() - Web APIs
the webgl2renderingcontext.vertexattribipointer() method of the webgl 2 api specifies integer data formats and locations of vertex attributes in a vertex attributes array.
... type a glenum specifying the data type of each component in the array.
... offset a glintptr specifying an offset in bytes of the first component in the vertex attribute array.
...And 3 more matches

WebGLRenderingContext - Web APIs
uniforms and attributes webglrenderingcontext.disablevertexattribarray() disables a vertex attribute array at a given position.
... webglrenderingcontext.enablevertexattribarray() enables a vertex attribute array at a given position.
... webglrenderingcontext.vertexattribpointer() specifies the data formats and locations of vertex attributes in a vertex attributes array.
...And 3 more matches

Lighting in WebGL - Web APIs
building the normals for the vertices the first thing we need to do is generate the array of normals for all the vertices that comprise our cube.
... const normalbuffer = gl.createbuffer(); gl.bindbuffer(gl.array_buffer, normalbuffer); const vertexnormals = [ // front 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, // back 0.0, 0.0, -1.0, 0.0, 0.0, -1.0, 0.0, 0.0, -1.0, 0.0, 0.0, -1.0, // top 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, // bottom 0.0, -1.0, 0.0, 0.0, -1.0, 0.0, 0.0, -1.0, 0.0, 0.0, -1.0, 0.0, // right 1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0, // left -1.0, 0.0, 0.0, ...
... -1.0, 0.0, 0.0, -1.0, 0.0, 0.0, -1.0, 0.0, 0.0 ]; gl.bufferdata(gl.array_buffer, new float32array(vertexnormals), gl.static_draw); ...
...And 3 more matches

Migrating from webkitAudioContext - Web APIs
in order to port it to the standard audiocontext api: var osc = context.createoscillator(); osc.start(1); osc.stop(1.5); var src = context.createbuffersource(); src.start(1, 0.25); src.stop(2); remove synchronous buffer creation in the old webkit implementation of web audio, there were two versions of createbuffer(), one which created an initially empty buffer, and one which took an existing arraybuffer containing encoded audio, decoded it and returned the result in the form of an audiobuffer.
... the example below shows old code which downloads an audio file over the network, and then decoded it using createbuffer(): var xhr = new xmlhttprequest(); xhr.open("get", "/path/to/audio.ogg", true); xhr.responsetype = "arraybuffer"; xhr.send(); xhr.onload = function() { var decodedbuffer = context.createbuffer(xhr.response, false); if (decodedbuffer) { // decoding was successful, do something useful with the audio buffer } else { alert("decoding the audio buffer failed"); } }; converting this code to use decodeaudiodata() is relatively simple, as can be seen below: var xhr = new xmlhttprequest(); x...
...hr.open("get", "/path/to/audio.ogg", true); xhr.responsetype = "arraybuffer"; xhr.send(); xhr.onload = function() { context.decodeaudiodata(xhr.response, function onsuccess(decodedbuffer) { // decoding was successful, do something useful with the audio buffer }, function onfailure() { alert("decoding the audio buffer failed"); }); }; note that the decodeaudiodata() method is asynchronous, which means that it will return immediately, and then when the decoding finishes, one of the success or failure callback functions will get called depending on whether the audio decoding was successful.
...And 3 more matches

Worker.prototype.postMessage() - Web APIs
transfer optional an optional array of transferable objects to transfer ownership of.
... transferable objects are instances of classes like arraybuffer, messageport or imagebitmap objects that can be transferred.
...as seen above, if you want to pass multiple values you can send an array.
...And 3 more matches

Web APIs
a angle_instanced_arrays abortcontroller abortsignal absoluteorientationsensor abstractrange abstractworker accelerometer addresserrors aescbcparams aesctrparams aesgcmparams aeskeygenparams ambientlightsensor analysernode animation animationeffect animationevent animationplaybackevent animationtimeline arraybufferview attr audiobuffer audiobuffersourcenode audioconfiguration audiocontext audiocontextlatencyca...
...iastreamaudiodestinationnode mediastreamaudiosourcenode mediastreamaudiosourceoptions mediastreamconstraints mediastreamevent mediastreamtrack mediastreamtrackaudiosourcenode mediastreamtrackaudiosourceoptions mediastreamtrackevent mediatrackconstraints mediatracksettings mediatracksupportedconstraints merchantvalidationevent messagechannel messageevent messageport metadata mimetype mimetypearray mouseevent mousescrollevent mousewheelevent mutationevent mutationobserver mutationobserverinit mutationrecord n ndefmessage ndefreader ndefreadingevent ndefrecord ndefwriter namelist namednodemap navigationpreloadmanager navigator navigatorconcurrenthardware navigatorid navigatorlanguage navigatoronline navigatorplugins navigatorstorage networkinformation node nodefilter nodeiterato...
...r nodelist nondocumenttypechildnode notation notification notificationaction notificationevent notifyaudioavailableevent o oes_element_index_uint oes_fbo_render_mipmap oes_standard_derivatives oes_texture_float oes_texture_float_linear oes_texture_half_float oes_texture_half_float_linear oes_vertex_array_object ovr_multiview2 offlineaudiocompletionevent offlineaudiocontext offscreencanvas orientationsensor oscillatornode overconstrainederror p pagetransitionevent paintworklet pannernode parentnode passwordcredential path2d payererrors paymentaddress paymentcurrencyamount paymentdetailsbase paymentdetailsupdate paymentitem paymentmethodchangeevent paymentrequest paymentrequestevent paymentrequestupdateevent paymentresponse paymentvalidationerrors pbkdf2params performance perf...
...And 3 more matches

Warning: JavaScript 1.6's for-each-in loops are deprecated - JavaScript
// 20 } alternative standard syntax you can now use the standard for...in loop to iterate over specified object keys, and get each value inside the loop: var object = { a: 10, b: 20 }; for (var key in object) { var x = object[key]; console.log(x); // 10 // 20 } or, using for...of (es2015) and object.values (es2017), you can get an array of the specified object values and iterate over the array like this: var object = { a: 10, b: 20 }; for (var x of object.values(object)) { console.log(x); // 10 // 20 } array iteration for each...in has been used to iterate over specified array elements.
... deprecated syntax var array = [10, 20, 30]; for each (var x in array) { console.log(x); // 10 // 20 // 30 } alternative standard syntax this is now possible with for...of (es2015) loops as well.
... var array = [10, 20, 30]; for (var x of array) { console.log(x); // 10 // 20 // 30 } iterating over a null-able array for each...in does nothing if the specified value is null or undefined, but for...of will throw an exception in these cases.
...And 3 more matches

TypeError: invalid arguments - JavaScript
the javascript exception "invalid arguments" occurs when typed array constructors are provided with a wrong argument.
... typed array constructors require either a length, another typed array, array-like objects, iterable objects or an arraybuffer object to create a new typed array.
... other constructor arguments will not create a valid typed array.
...And 3 more matches

Map - JavaScript
description a map object iterates its elements in insertion order — a for...of loop returns an array of [key, value] for each iteration.
... iteration methods map.prototype[@@iterator]() returns a new iterator object that contains an array of [key, value] for each element in the map object in insertion order.
... map.prototype.entries() returns a new iterator object that contains an array of [key, value] for each element in the map object in insertion order.
...And 3 more matches

Object.freeze() - JavaScript
as an object, an array can be frozen; after doing so, its elements cannot be altered and no elements can be added to or removed from the array.
... > object.freeze(1) typeerror: 1 is not an object // es5 code > object.freeze(1) 1 // es2015 code an arraybufferview with elements will cause a typeerror, as they are views over memory and will definitely cause other possible issues: > object.freeze(new uint8array(0)) // no elements uint8array [] > object.freeze(new uint8array(1)) // has elements typeerror: cannot freeze array buffer views with elements > object.freeze(new dataview(new arraybuffer(32))) // no elements dataview {} > object.freeze(n...
...ew float64array(new arraybuffer(64), 63, 0)) // no elements float64array [] > object.freeze(new float64array(new arraybuffer(64), 32, 2)) // has elements typeerror: cannot freeze array buffer views with elements note that; as the standard three properties (buf.bytelength, buf.byteoffset and buf.buffer) are read-only (as are those of an arraybuffer or sharedarraybuffer), there is no reason for attempting to freeze these properties.
...And 3 more matches

Symbol.isConcatSpreadable - JavaScript
the symbol.isconcatspreadable well-known symbol is used to configure if an object should be flattened to its array elements when using the array.prototype.concat() method.
...it can control behavior for arrays and array-like objects: for array objects, the default behavior is to spread (flatten) elements.
... for array-like objects, the default behavior is no spreading or flattening.
...And 3 more matches

Iteration protocols - JavaScript
some built-in types are built-in iterables with a default iteration behavior, such as array or map, while other types (such as object) are not.
...{ value: 'bye', done: (this._first = false) } : { done: true } }, _first: true }; }; notice how redefining @@iterator affects the behavior of built-in constructs that use the iteration protocol: console.log([...somestring]); // ["bye"] console.log(somestring + ''); // "hi" iterable examples built-in iterables string, array, typedarray, map, and set are all built-in iterables, because each of their prototype objects implements an @@iterator method.
...ap([[1, 'a'], [2, 'b'], [3, 'c']]).get(2); // "b" let myobj = {}; new weakmap([ [{}, 'a'], [myobj, 'b'], [{}, 'c'] ]).get(myobj); // "b" new set([1, 2, 3]).has(3); // true new set('123').has('2'); // true new weakset(function* () { yield {} yield myobj yield {} }()).has(myobj); // true see also promise.all(iterable) promise.race(iterable) array.from(iterable) syntaxes expecting iterables some statements and expressions expect iterables, for example the for...of loops, the spread operator), yield*, and destructuring assignment: for (let value of ['a', 'b', 'c']) { console.log(value); } // "a" // "b" // "c" console.log([...'abc']); // ["a", "b", "c"] function* gen() { yield* ['a', 'b', 'c']; } console.log(gen().next()); // ...
...And 3 more matches

in operator - JavaScript
syntax prop in object parameters prop a string or symbol representing a property name or array index (non-symbols will be coerced to strings).
... // arrays let trees = ['redwood', 'bay', 'cedar', 'oak', 'maple'] 0 in trees // returns true 3 in trees // returns true 6 in trees // returns false 'bay' in trees // returns false (you must specify the index number, not the value at that index) 'length' in trees // returns true (length is an array property) symbol.iterator in trees // returns true (arrays are iterable, works only in es2015+) // predefined objects 'pi' in math // returns true // custom objects let mycar = {make: 'honda', model: 'accord', year: 1998} 'make' in mycar // returns true 'model' in mycar // re...
... let mycar = {make: 'honda', model: 'accord', year: 1998} delete mycar.make 'make' in mycar // returns false let trees = new array('redwood', 'bay', 'cedar', 'oak', 'maple') delete trees[3] 3 in trees // returns false if you set a property to undefined but do not delete it, the in operator returns true for that property.
...And 3 more matches

places/history - Archive of obsolete content
example let { search } = require("sdk/places/history"); // simple query search( { url: "https://developers.mozilla.org/*" }, { sort: "visitcount" } ).on("end", function (results) { // results is an array of objects containing // data about visits to any site on developers.mozilla.org // ordered by visit count }); // complex query // the query objects are or'd together // let's say we want to retrieve all visits from before a week ago // with the query of 'ruby', but from last week onwards, we want // all results with 'javascript' in the url or title.
...s let lastweek = date.now - (1000*60*60*24*7); search( // first query looks for all entries before last week with 'ruby' [{ query: "ruby", to: lastweek }, // second query searches all entries after last week with 'javascript' { query: "javascript", from: lastweek }], // we want to order chronologically by visit date { sort: "date" } ).on("end", function (results) { // results is an array of objects containing visit data, // sorted by visit date, with all entries from more than a week ago // that contain 'ruby', *in addition to* entries from this last week // that contain 'javascript' }); globals functions search(queries, options) queries can be performed on history entries by passing in one or more query options.
... parameters queries : object|array an object representing a query, or an array of objects representing queries.
...And 2 more matches

stylesheet/style - Archive of obsolete content
stylesheet file url(s) are verified to be local to an add-on, while css rules are verified to be a string or array of strings.
... parameters options : object required options: name type uri string,array a string, or an array of strings, that represents local uri to stylesheet.
... source string,array a string, or an array of strings, that contains css rules.
...And 2 more matches