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Event.returnValue - Web APIs
the event property
returnvalue indicates whether the default action for this event has been prevented or not.
... note: while
returnvalue has been adopted into the dom standard, it is present primarily to support existing code.
... syntax event.
returnvalue = bool; var bool = event.
returnvalue; value a boolean value which is true if the event has not been canceled; otherwise, if the event has been canceled or the default has been prevented, the value is false.
...And 4 more matches
HTMLDialogElement.returnValue - Web APIs
the
returnvalue property of the htmldialogelement interface gets or sets the return value for the <dialog>, usually to indicate which button the user pressed to close it.
... syntax dialoginstance.
returnvalue = 'my
returnvalue'; var my
returnvalue = dialoginstance.
returnvalue; value a domstring representing the
returnvalue of the dialog.
...ion> </select> </label></p> <menu> <button>cancel</button> <button>confirm</button> </menu> </form> </dialog> <menu> <button id="updatedetails">update details</button> </menu> <script> (function() { var updatebutton = document.getelementbyid('updatedetails'); var dialog = document.getelementbyid('favdialog'); dialog.
returnvalue = 'favanimal'; function opencheck(dialog) { if (dialog.open) { console.log('dialog open'); } else { console.log('dialog closed'); } } function handleuserinput(
returnvalue) { if (
returnvalue === 'cancel' ||
returnvalue == null) { // user canceled the dialog, do nothing } else if (
returnvalue === 'confirm') { ...
...And 3 more matches
JS_SetCallReturnValue2
syntax void js_setcall
returnvalue2(jscontext *cx, jsval v); name type description cx jscontext * the context in which the native function is running.
... description calling js_setcall
returnvalue2 indicates to the runtime that the native will return a value of type reference.
... an example is in js/src/js.c; searching for js_setcall
returnvalue2 should find it.
Bytecode Descriptions
it should be an object of the form {value:
returnvalue, done: true}.
... getrval stack: ⇒ rval push the current stack frame's
returnvalue.
...every stack frame has a
returnvalue slot, used by top-level scripts, generators, async functions, and derived class constructors.
...And 5 more matches
Window: beforeunload event - Web APIs
however note that not all browsers support this method, and some instead require the event handler to implement one of two legacy methods: assigning a string to the event's
returnvalue property returning a string from the event handler.
... examples the html specification states that authors should use the event.preventdefault() method instead of using event.
returnvalue.
... event.preventdefault(); // chrome requires
returnvalue to be set.
... event.
returnvalue = ''; }); specifications specification status comment html living standardthe definition of 'beforeunload' in that specification.
BeforeUnloadEvent - Web APIs
when a non-empty string is assigned to the
returnvalue event property, a dialog box appears, asking the users for confirmation to leave the page (see example below).
...,monaco,andale mono,monospace" fill="#4d4e53" text-anchor="middle" alignment-baseline="middle">beforeunloadevent</text></a></svg></div> a:hover text { fill: #0095dd; pointer-events: all;} bubbles no cancelable yes target objects defaultview interface event examples window.addeventlistener("beforeunload", function( event ) { event.
returnvalue = "\o/"; }); // is equivalent to window.addeventlistener("beforeunload", function( event ) { event.preventdefault(); }); webkit-derived browsers don't follow the spec for the dialog box.
... window.addeventlistener("beforeunload", function (e) { var confirmationmessage = "\o/"; (e || window.event).
returnvalue = confirmationmessage; // gecko + ie return confirmationmessage; /* safari, chrome, and other * webkit-derived browsers */ }); specifications specification status comment html living standardthe definition of 'beforeunloadevent' in that specification.
HTMLDialogElement.close() - Web APIs
an optional domstring may be passed as an argument, updating the
returnvalue of the the dialog.
... syntax dialoginstance.close(
returnvalue); parameters
returnvalue optional a domstring representing an updated value for the htmldialogelement.
returnvalue of the dialog.
...cel</button> <button type="submit">confirm</button> </menu> </form> </dialog> <menu> <button id="updatedetails">update details</button> </menu> <script> (function() { var updatebutton = document.getelementbyid('updatedetails'); var cancelbutton = document.getelementbyid('cancel'); var dialog = document.getelementbyid('favdialog'); dialog.
returnvalue = 'favanimal'; function opencheck(dialog) { if(dialog.open) { console.log('dialog open'); } else { console.log('dialog closed'); } } // update button opens a modal dialog updatebutton.addeventlistener('click', function() { dialog.showmodal(); opencheck(dialog); }); // form cancel button closes the d...
HTMLDialogElement - Web APIs
htmldialogelement.
returnvalue a domstring that sets or returns the return value for the dialog.
...an optional domstring may be passed as an argument, updating the
returnvalue of the the dialog.
...cel</button> <button type="submit">confirm</button> </menu> </form> </dialog> <menu> <button id="updatedetails">update details</button> </menu> <script> (function() { var updatebutton = document.getelementbyid('updatedetails'); var cancelbutton = document.getelementbyid('cancel'); var dialog = document.getelementbyid('favdialog'); dialog.
returnvalue = 'favanimal'; function opencheck(dialog) { if(dialog.open) { console.log('dialog open'); } else { console.log('dialog closed'); } } // update button opens a modal dialog updatebutton.addeventlistener('click', function() { dialog.showmodal(); opencheck(dialog); }); // form cancel button closes the d...
Adding windows and dialogs - Archive of obsolete content
let somevalue = 2; let
returnvalue = { accepted : false , result : "" }; window.opendialog( "chrome://xulschoolhello/content/somedialog.xul", "xulschoolhello-some-dialog", "chrome,centerscreen", somevalue,
returnvalue); // you can send as many extra parameters as you need.
... // if (
returnvalue.accepted) { do stuff } the optional parameters are available in the dialog code through the window.arguments property: let somevalue = window.arguments[0]; let
returnvalue = window.arguments[1]; //
returnvalue.accepted = true; //
returnvalue.result = "something"; the parameter named
returnvalue is an object that the dialog will modify to reflect what the user did in it.
mozbrowseractivitydone
if the activity has a
returnvalue set to true, then the activity is consumed when postresult or posterror is invoked on the activity by the receiving app.
... note: for activities where the receiving app's activity definition in its manifest does not include
returnvalue or
returnvalue is false, no mozbrowseractivitydone event will be generated as of the landing of bug 1194525 in firefox os 2.5.
NSS API Guidelines
secport_verify_pointer(classname, pointer, secerror,
returnvalue)- check if a given pointer really belongs to the requested class.
... if it doesn't set the error secerror and return the value
returnvalue.
CustomEvent - Web APIs
(mozilla-specific.) event.
returnvalue a historical property introduced by internet explorer and eventually adopted into the dom specification in order to ensure existing sites continue to work.
... ideally, you should try to use event.preventdefault() and event.defaultprevented instead, but you can use
returnvalue if you choose to do so.
Event - Web APIs
(mozilla-specific.) event.
returnvalue a historical property introduced by internet explorer and eventually adopted into the dom specification in order to ensure existing sites continue to work.
... ideally, you should try to use event.preventdefault() and event.defaultprevented instead, but you can use
returnvalue if you choose to do so.
Index - Web APIs
1252 event.
returnvalue api, dom, event, property, reference, action, default,
returnvalue the event property
returnvalue indicates whether the default action for this event has been prevented or not.
... 1610 htmldialogelement.
returnvalue api, experimental, html dom, htmldialogelement, property, reference,
returnvalue the
returnvalue property of the htmldialogelement interface gets or sets the return value for the <dialog>, usually to indicate which button the user pressed to close it.
Range.compareNode() - Web APIs
ch (e) { noderange.selectnodecontents(node); } var nodeisbefore = range.compareboundarypoints(range.start_to_start, noderange) == 1; var nodeisafter = range.compareboundarypoints(range.end_to_end, noderange) == -1; if (nodeisbefore && !nodeisafter) return 0; if (!nodeisbefore && nodeisafter) return 1; if (nodeisbefore && nodeisafter) return 2; return 3; } syntax
returnvalue = range.comparenode( referencenode ); parameters referencenode the node to compare with the range.
... example range = document.createrange(); range.selectnode(document.getelementsbytagname("div").item(0));
returnvalue = range.comparenode(document.getelementsbytagname("p").item(0)); notes this method is obsolete; you should use the w3c dom range.compareboundarypoints() method.
Range.comparePoint() - Web APIs
syntax
returnvalue = range.comparepoint(referencenode, offset) parameters referencenode the node to compare with the range.
... example range = document.createrange(); range.selectnode(document.getelementsbytagname('div').item(0));
returnvalue = range.comparepoint(document.getelementsbytagname('p').item(0), 1); specification specification status comment domthe definition of 'range.comparepoint()' in that specification.
WindowEventHandlers.onbeforeunload - Web APIs
the html specification states that authors should use the event.preventdefault() method instead of using event.
returnvalue to prompt the user.
... window.addeventlistener('beforeunload', function (e) { // cancel the event e.preventdefault(); // if you prevent default behavior in mozilla firefox prompt will always be shown // chrome requires
returnvalue to be set e.
returnvalue = ''; }); guarantee the browser unload by removing the
returnvalue property of the event window.addeventlistener('beforeunload', function (e) { // the absence of a
returnvalue property on the event will guarantee the browser unload happens delete e['
returnvalue']; }); notes when your page uses javascript to render content, the javascript may stop when leaving and then navigating back to the page.
<dialog>: The Dialog element - HTML: Hypertext Markup Language
when such a form is submitted, the dialog closes with its
returnvalue property set to the value of the button that was used to submit the form.
...ert("the <dialog> api is not supported by this browser"); } }); // "favorite animal" input sets the value of the submit button selectel.addeventlistener('change', function onselect(e) { confirmbtn.value = selectel.value; }); // "confirm" button of form triggers "close" on dialog because of [method="dialog"] favdialog.addeventlistener('close', function onclose() { outputbox.value = favdialog.
returnvalue + " button clicked - " + (new date()).tostring(); }); result specifications specification status comment html living standardthe definition of '<dialog>' in that specification.
jspage - Archive of obsolete content
p:38,down:40,left:37,right:39,esc:27,space:32,backspace:8,tab:9,"delete":46});event.implement({stop:function(){return this.stoppropagation().preventdefault(); },stoppropagation:function(){if(this.event.stoppropagation){this.event.stoppropagation();}else{this.event.cancelbubble=true;}return this;},preventdefault:function(){if(this.event.preventdefault){this.event.preventdefault(); }else{this.event.
returnvalue=false;}return this;}});function class(b){if(b instanceof function){b={initialize:b};}var a=function(){object.reset(this);if(a._prototyping){return this; }this._current=$empty;var c=(this.initialize)?this.initialize.apply(this,arguments):this;delete this._current;delete this.caller;return c;}.extend(this); a.implement(b);a.constructor=class;a.prototype.constructor=a;return a;}function.prototype.pr...
Index
448 js_setcall
returnvalue2 jsapi reference, obsolete, spidermonkey calling js_setcall
returnvalue2 indicates to the runtime that the native will return a value of type reference.
JSAPI reference
js_getmethod obsolete since jsapi 23 js_getmethodbyid obsolete since jsapi 23 a spidermonkey extension allows a native function to return an lvalue—that is, a reference to a property of an object: js_setcall
returnvalue2 obsolete since javascript 1.8.5 id a jsid is an identifier for a property or method of an object.
JSDBGAPI
js_frameiterator js_getframescript js_getframepc js_getscriptedcaller js_stackframeprincipals js_evalframeprincipals js_getframeannotation js_setframeannotation js_getframeprincipalarray js_isnativeframe js_getframeobject js_getframescopechain js_getframecallobject js_getframethis js_getframefunction js_getframefunctionobject js_isconstructorframe js_isdebuggerframe js_getframe
returnvalue js_setframe
returnvalue js_getframecalleeobject js_getscriptfilename js_getscriptbaselinenumber js_getscriptlineextent js_getscriptversion js_gettopscriptfilenameflags js_getscriptfilenameflags js_flagscriptfilenameprefix jsfilename_null jsfilename_system jsfilename_protected evaluating debug code js_evaluateinstackframe examining object properties typedef jsproperty...
SpiderMonkey 1.8.5
art js_forgetlocalroot js_getfunctionname js_getoperationlimit js_getscriptobject js_getstringbytes js_getstringchars js_isassigning js_leavelocalrootscope js_leavelocalrootscopewithresult js_newdouble js_newdoublevalue js_newscriptobject js_newstring js_poparguments js_pusharguments js_pushargumentsva js_removeroot js_removerootrt js_sealobject js_setbranchcallback js_setcall
returnvalue2 js_setcheckobjectaccesscallback js_setobjectprincipalsfinder js_setoperationlimit js_setprincipalstranscoder api changes operation callback js_setoperationcallback was introduced in js 1.8.0, replacing the branch callback, in anticipation of the addition of the tracing jit (tracemonkey).
EventTarget.addEventListener() - Web APIs
(function() { if (!event.prototype.preventdefault) { event.prototype.preventdefault=function() { this.
returnvalue=false; }; } if (!event.prototype.stoppropagation) { event.prototype.stoppropagation=function() { this.cancelbubble=true; }; } if (!element.prototype.addeventlistener) { var eventlisteners=[]; var addeventlistener=function(type,listener /*, usecapture (will be ignored) */) { var self=this; var wrapper=function(e) { e.target=e.srcelement; ...
HTMLDialogElement.open - Web APIs
cel</button> <button type="submit">confirm</button> </menu> </form> </dialog> <menu> <button id="updatedetails">update details</button> </menu> <script> (function() { var updatebutton = document.getelementbyid('updatedetails'); var cancelbutton = document.getelementbyid('cancel'); var dialog = document.getelementbyid('favdialog'); dialog.
returnvalue = 'favanimal'; function opencheck(dialog) { if(dialog.open) { console.log('dialog open'); } else { console.log('dialog closed'); } } // update button opens a modal dialog updatebutton.addeventlistener('click', function() { dialog.showmodal(); opencheck(dialog); }); // form cancel button closes the d...
HTMLDialogElement.show() - Web APIs
cel</button> <button type="submit">confirm</button> </menu> </form> </dialog> <menu> <button id="updatedetails">update details</button> </menu> <script> (function() { var updatebutton = document.getelementbyid('updatedetails'); var cancelbutton = document.getelementbyid('cancel'); var dialog = document.getelementbyid('favdialog'); dialog.
returnvalue = 'favanimal'; function opencheck(dialog) { if(dialog.open) { console.log('dialog open'); } else { console.log('dialog closed'); } } // update button opens a modal dialog updatebutton.addeventlistener('click', function() { dialog.showmodal(); opencheck(dialog); }); // form cancel button closes the d...
HTMLDialogElement.showModal() - Web APIs
cel</button> <button type="submit">confirm</button> </menu> </form> </dialog> <menu> <button id="updatedetails">update details</button> </menu> <script> (function() { var updatebutton = document.getelementbyid('updatedetails'); var cancelbutton = document.getelementbyid('cancel'); var dialog = document.getelementbyid('favdialog'); dialog.
returnvalue = 'favanimal'; function opencheck(dialog) { if(dialog.open) { console.log('dialog open'); } else { console.log('dialog closed'); } } // update button opens a modal dialog updatebutton.addeventlistener('click', function() { dialog.showmodal(); opencheck(dialog); }); // form cancel button closes the d...
Window.showModalDialog() - Web APIs
syntax returnval = window.showmodaldialog(uri[, arguments][, options]); returnval holds the
returnvalue property as set by the document specified by uri.
Window - Web APIs
window.
returnvalue the return value to be returned to the function that called window.showmodaldialog() to display the window as a modal dialog.
yield* - JavaScript
function* g4() { yield* [1, 2, 3]; return 'foo'; } function* g5() { const g4
returnvalue = yield* g4(); console.log(g4
returnvalue) // 'foo' return g4
returnvalue; } const iterator = g5(); console.log(iterator.next()); // {value: 1, done: false} console.log(iterator.next()); // {value: 2, done: false} console.log(iterator.next()); // {value: 3, done: false} done is false because g5 generator isn't finished, only g4 console.log(iterator.next()); // {value: 'foo', done: true} spe...