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Document.readyState - Web APIs
the document.
readystate property describes the loading state of the document.
... when the value of this property changes, a
readystatechange event fires on the document object.
... syntax var string = document.
readystate; values the
readystate of a document can be one of following: loading the document is still loading.
...And 3 more matches
IDBRequest.readyState - Web APIs
the
readystate read-only property of the idbrequest interface returns the state of the request.
... syntax var current
readystate = request.
readystate; value the idbrequest
readystate of the request, which takes one of the following two values: value meaning pending the request is pending.
...the
readystate of the 2nd request is logged to the developer console.
...And 3 more matches
EventSource.readyState - Web APIs
the
readystate read-only property of the eventsource interface returns a number representing the state of the connection.
... syntax var my
readystate = eventsource.
readystate; value a number representing the state of the connection.
... possible values are: 0 — connecting 1 — open 2 — closed examples var evtsource = new eventsource('sse.php'); console.log(evtsource.
readystate); note: you can find a full example on github — see simple sse demo using php.
... specifications specification status comment html living standardthe definition of '
readystate' in that specification.
HTMLMediaElement.readyState - Web APIs
the htmlmediaelement.
readystate property indicates the readiness state of the media.
... syntax var
readystate = audioorvideo.
readystate; value an unsigned short.
... <audio id="example" preload="auto"> <source src="sound.ogg" type="audio/ogg" /> </audio> var obj = document.getelementbyid('example'); obj.addeventlistener('loadeddata', function() { if(obj.
readystate >= 2) { obj.play(); } }); specifications specification status comment html living standardthe definition of 'htmlmediaelement.
readystate' in that specification.
... living standard html5the definition of 'htmlmediaelement.
readystate' in that specification.
MediaSource.readyState - Web APIs
the
readystate read-only property of the mediasource interface returns an enum representing the state of the current mediasource.
... syntax var my
readystate = mediasource.
readystate; value a domstring.
... example the following snippet is from a simple example written by nick desaulniers (view the full demo live, or download the source for further investigation.) if ('mediasource' in window && mediasource.istypesupported(mimecodec)) { var mediasource = new mediasource; //console.log(mediasource.
readystate); // closed video.src = url.createobjecturl(mediasource); mediasource.addeventlistener('sourceopen', sourceopen); } else { console.error('unsupported mime type or codec: ', mimecodec); } function sourceopen (_) { //console.log(this.
readystate); // open var mediasource = this; var sourcebuffer = mediasource.addsourcebuffer(mimecodec); fetchab(asseturl, function (buf) { sourcebuffer.addeventlistener('updateend', function (_) { mediasource.endofstream(); video.play...
...(); //console.log(mediasource.
readystate); // ended }); sourcebuffer.appendbuffer(buf); }); }; specifications specification status comment media source extensionsthe definition of '
readystate' in that specification.
RTCDataChannel.readyState - Web APIs
the read-only rtcdatachannel property
readystate returns an enum of type rtcdatachannelstate which indicates the state of the data channel's underlying data connection.
... syntax var state = adatachannel.
readystate; values a string which is one of the values in the rtcdatachannelstate enum, indicating the current state of the underlying data transport.
... example var datachannel = peerconnection.createdatachannel("file transfer"); var sendqueue = []; function sendmessage(msg) { switch(datachannel.
readystate) { case "connecting": console.log("connection not open; queueing: " + msg); sendqueue.push(msg); break; case "open": sendqueue.foreach((msg) => datachannel.send(msg)); break; case "closing": console.log("attempted to send message while closing: " + msg); break; case "closed": console.log("error!
... attempt to send while connection closed."); break; } } specifications specification status comment webrtc 1.0: real-time communication between browsersthe definition of 'rtcdatachannel.
readystate' in that specification.
XMLHttpRequest.onreadystatechange - Web APIs
an eventhandler that is called whenever the
readystate attribute changes.
...the xmlhttprequest.on
readystatechange property contains the event handler to be called when the
readystatechange event is fired, that is every time the
readystate property of the xmlhttprequest changes.
... syntax xmlhttprequest.on
readystatechange = callback; values callback is the function to be executed when the
readystate changes.
... examples const xhr = new xmlhttprequest(), method = "get", url = "https://developer.mozilla.org/"; xhr.open(method, url, true); xhr.on
readystatechange = function () { // in local files, status is 0 upon success in mozilla firefox if(xhr.
readystate === xmlhttprequest.done) { var status = xhr.status; if (status === 0 || (status >= 200 && status < 400)) { // the request has been completed successfully console.log(xhr.responsetext); } else { // oh no!
Document: readystatechange event - Web APIs
the
readystatechange event is fired when the
readystate attribute of a document has changed.
... bubbles no cancelable no interface event event handler property on
readystatechange examples live example html <div class="controls"> <button id="reload" type="button">reload</button> </div> <div class="event-log"> <label>event log:</label> <textarea readonly class="event-log-contents" rows="8" cols="30"></textarea> </div> css body { display: grid; grid-template-areas: "control log"; } .controls { grid-area: control; display: flex; align-items: center; justify-content: center; } .event-log { grid-area: log; } .event-log-contents { resize: none; } label, button { display: block; } #reload { height: 2rem; } js const log = document.queryselector('.event-log-contents'); const reload = document.queryselect...
...or('#reload'); reload.addeventlistener('click', () => { log.textcontent =''; window.settimeout(() => { window.location.reload(true); }, 200); }); window.addeventlistener('load', (event) => { log.textcontent = log.textcontent + 'load\n'; }); document.addeventlistener('
readystatechange', (event) => { log.textcontent = log.textcontent + `
readystate: ${document.
readystate}\n`; }); document.addeventlistener('domcontentloaded', (event) => { log.textcontent = log.textcontent + `domcontentloaded\n`; }); result specifications specification status comment html living standardthe definition of '
readystatechange' in that specification.
FileReader.readyState - Web APIs
the filereader
readystate property provides the current state of the reading operation a filereader is in.
... example var reader = new filereader(); console.log('empty', reader.
readystate); //
readystate will be 0 reader.readastext(blob); console.log('loading', reader.
readystate); //
readystate will be 1 reader.onloadend = function () { console.log('done', reader.
readystate); //
readystate will be 2 }; value a number which is one of the three possible state constants define for the filereader api.
... specifications specification status comment file apithe definition of '
readystate' in that specification.
MediaStreamTrack.readyState - Web APIs
the mediastreamtrack.
readystate read-only property returns an enumerated value giving the status of the track.
... syntax const state = track.
readystate value it takes one of the following values: "live" which indicates that an input is connected and does its best-effort in providing real-time data.
... specifications specification status comment media capture and streamsthe definition of 'mediastreamtrack.
readystate' in that specification.
WebSocket.readyState - Web APIs
the websocket.
readystate read-only property returns the current state of the websocket connection.
... syntax var
readystate = awebsocket.
readystate; value one of the following unsigned short values: value state description 0 connecting socket has been created.
... specifications specification status comment html living standardthe definition of 'websocket:
readystate' in that specification.
XMLHttpRequest.readyState - Web APIs
the xmlhttprequest.
readystate property returns the state an xmlhttprequest client is in.
...instead of unsent, opened, headers_received, loading and done, the names
readystate_uninitialized (0),
readystate_loading (1),
readystate_loaded (2),
readystate_interactive (3) and
readystate_complete (4) are used.
... example var xhr = new xmlhttprequest(); console.log('unsent', xhr.
readystate); //
readystate will be 0 xhr.open('get', '/api', true); console.log('opened', xhr.
readystate); //
readystate will be 1 xhr.onprogress = function () { console.log('loading', xhr.
readystate); //
readystate will be 3 }; xhr.onload = function () { console.log('done', xhr.
readystate); //
readystate will be 4 }; xhr.send(null); specifications specification status comment xmlhttprequest living standard whatwg living standard ...
Index - Web APIs
956 document.
readystate api, html dom, property, reference the document.
readystate property describes the loading state of the document.
... 1008 document:
readystatechange event event, reference, xmlhttprequest, interactive the
readystatechange event is fired when the
readystate attribute of a document has changed.
... 1263 eventsource.close() api, eventsource, method, reference, server-sent events, close the close() method of the eventsource interface closes the connection, if one is made, and sets the eventsource.
readystate attribute to 2 (closed).
...And 23 more matches
Getting Started - Developer guides
at this stage, you need to tell the xmlhttp request object which javascript function will handle the response, by setting the on
readystatechange property of the object and naming it after the function to call when the request changes state, like this: httprequest.on
readystatechange = nameofthefunction; note that there are no parentheses or parameters after the function name, because you're assigning a reference to the function, rather than actually calling it.
... alternatively, instead of giving a function name, you can use the javascript technique of defining functions on the fly (called "anonymous functions") to define the actions that will process the response, like this: httprequest.on
readystatechange = function(){ // process the server response here.
...for example, use the following before calling send() for form data sent as a query string: httprequest.setrequestheader('content-type', 'application/x-www-form-urlencoded'); step 2 – handling the server response when you sent the request, you provided the name of a javascript function to handle the response: httprequest.on
readystatechange = nameofthefunction; what should this function do?
...And 8 more matches
tabs - Archive of obsolete content
readystate new in firefox 33.
...this corresponds directly to document.
readystate.
... it has one of four possible values: "uninitialized": the tab's document is not yet loading "loading": the tab's document is still in the process of loading "interactive": the tab's document has loaded and is parsed, but resources such as images and stylesheets may still be loading "complete": the tab's document and all resources are fully loaded once a tab's
readystate has entered "interactive", you can retrieve properties such as the document's url.
... you can use the tab's
readystate property to determine whether the tab's content and url will be available: if
readystate is uninitialized or loading, then you can't access the tab's properties and must wait for the tab's ready event.
jspage - Archive of obsolete content
}else{if(c[a]){c[a].keys.each(function(e){this.addevent(a,e);},this);}}return this;}});element.nativeevents={click:2,dblclick:2,mouseup:2,mousedown:2,contextmenu:2,mousewheel:2,dommousescroll:2,mouseover:2,mouseout:2,mousemove:2,selectstart:2,selectend:2,keydown:2,keypress:2,keyup:2,focus:2,blur:2,change:2,reset:2,select:2,submit:2,load:1,unload:1,beforeunload:2,resize:1,move:1,domcontentloaded:1,
readystatechange:1,error:1,abort:1,scroll:1}; (function(){var a=function(b){var c=b.relatedtarget;if(c==undefined){return true;}if(c===false){return false;}return($type(this)!="document"&&c!=this&&c.prefix!="xul"&&!this.haschild(c)); };element.events=new hash({mouseenter:{base:"mouseover",condition:a},mouseleave:{base:"mouseout",condition:a},mousewheel:{base:(browser.engine.gecko)?"dommousescroll":"mousewhe...
...ready");document.fireevent("domready");};window.addevent("load",b);if(browser.engine.trident){var a=document.createelement("div"); (function(){($try(function(){a.doscroll();return document.id(a).inject(document.body).set("html","temp").dispose();}))?b():arguments.callee.delay(50);})(); }else{if(browser.engine.webkit&&browser.engine.version<525){(function(){(["loaded","complete"].contains(document.
readystate))?b():arguments.callee.delay(50); })();}else{document.addevent("domcontentloaded",b);}}})();var json=new hash(this.json&&{stringify:json.stringify,parse:json.parse}).extend({$specialchars:{"\b":"\\b","\t":"\\t","\n":"\\n","\f":"\\f","\r":"\\r",'"':'\\"',"\\":"\\\\"},$replacechars:function(a){return json.$specialchars[a]||"\\u00"+math.floor(a.charcodeat()/16).tostring(16)+(a.charcodeat()%16).tostr...
...xt/xml, */*"},async:true,format:false,method:"post",link:"ignore",issuccess:null,emulation:true,urlencoded:true,encoding:"utf-8",evalscripts:false,evalresponse:false,nocache:false},initialize:function(a){this.xhr=new browser.request(); this.setoptions(a);this.options.issuccess=this.options.issuccess||this.issuccess;this.headers=new hash(this.options.headers);},onstatechange:function(){if(this.xhr.
readystate!=4||!this.running){return; }this.running=false;this.status=0;$try(function(){this.status=this.xhr.status;}.bind(this));this.xhr.on
readystatechange=$empty;if(this.options.issuccess.call(this,this.status)){this.response={text:this.xhr.responsetext,xml:this.xhr.responsexml}; this.success(this.response.text,this.response.xml);}else{this.response={text:null,xml:null};this.failure();}},issuccess:functi...
...ons.encoding)?"; charset="+this.options.encoding:""; this.headers.set("content-type","application/x-www-form-urlencoded"+c);}if(this.options.nocache){var f="nocache="+new date().gettime();g=(g)?f+"&"+g:f; }var e=b.lastindexof("/");if(e>-1&&(e=b.indexof("#"))>-1){b=b.substr(0,e);}if(g&&a=="get"){b=b+(b.contains("?")?"&":"?")+g;g=null;}this.xhr.open(a.touppercase(),b,this.options.async); this.xhr.on
readystatechange=this.onstatechange.bind(this);this.headers.each(function(m,l){try{this.xhr.setrequestheader(l,m);}catch(n){this.fireevent("exception",[l,m]); }},this);this.fireevent("request");this.xhr.send(g);if(!this.options.async){this.onstatechange();}return this;},cancel:function(){if(!this.running){return this; }this.running=false;this.xhr.abort();this.xhr.on
readystatechange=$empty;this.xhr=new brows...
Document - Web APIs
document.
readystateread only returns loading status of the document.
... document.on
readystatechange represents the event handling code for the
readystatechange event.
...
readystatechange fired when the
readystate attribute of a document has changed.
... also available via the on
readystatechange property.
MediaSource.addSourceBuffer() - Web APIs
invalidstateerror the mediasource is not in the "open"
readystate.
...ew the full demo live, or download the source for further investigation.) var asseturl = 'frag_bunny.mp4'; // need to be specific for blink regarding codecs // ./mp4info frag_bunny.mp4 | grep codec var mimecodec = 'video/mp4; codecs="avc1.42e01e, mp4a.40.2"'; if ('mediasource' in window && mediasource.istypesupported(mimecodec)) { var mediasource = new mediasource; //console.log(mediasource.
readystate); // closed video.src = url.createobjecturl(mediasource); mediasource.addeventlistener('sourceopen', sourceopen); } else { console.error('unsupported mime type or codec: ', mimecodec); } function sourceopen (_) { //console.log(this.
readystate); // open var mediasource = this; var sourcebuffer = mediasource.addsourcebuffer(mimecodec); fetchab(asseturl, function (buf) { sourcebuf...
...fer.addeventlistener('updateend', function (_) { mediasource.endofstream(); video.play(); //console.log(mediasource.
readystate); // ended }); sourcebuffer.appendbuffer(buf); }); }; specifications specification status comment media source extensionsthe definition of 'addsourcebuffer()' in that specification.
MediaSource.endOfStream() - Web APIs
return value undefined exceptions exception explanation invalidstateerror mediasource.
readystate is not equal to open, or one or more of the sourcebuffer objects in mediasource.sourcebuffers are being updated (i.e.
...ew the full demo live, or download the source for further investigation.) var asseturl = 'frag_bunny.mp4'; // need to be specific for blink regarding codecs // ./mp4info frag_bunny.mp4 | grep codec var mimecodec = 'video/mp4; codecs="avc1.42e01e, mp4a.40.2"'; if ('mediasource' in window && mediasource.istypesupported(mimecodec)) { var mediasource = new mediasource; //console.log(mediasource.
readystate); // closed video.src = url.createobjecturl(mediasource); mediasource.addeventlistener('sourceopen', sourceopen); } else { console.error('unsupported mime type or codec: ', mimecodec); } function sourceopen (_) { //console.log(this.
readystate); // open var mediasource = this; var sourcebuffer = mediasource.addsourcebuffer(mimecodec); fetchab(asseturl, function (buf) { sourcebuf...
...fer.addeventlistener('updateend', function (_) { mediasource.endofstream(); video.play(); //console.log(mediasource.
readystate); // ended }); sourcebuffer.appendbuffer(buf); }); }; specifications specification status comment media source extensionsthe definition of 'endofstream()' in that specification.
MediaSource - Web APIs
mediasource.
readystate read only returns an enum representing the state of the current mediasource, whether it is not currently attached to a media element (closed), attached and ready to receive sourcebuffer objects (open), or attached but the stream has been ended via mediasource.endofstream() (ended.) mediasource.duration gets and sets the duration of the current media being presented.
...r further investigation.) var video = document.queryselector('video'); var asseturl = 'frag_bunny.mp4'; // need to be specific for blink regarding codecs // ./mp4info frag_bunny.mp4 | grep codec var mimecodec = 'video/mp4; codecs="avc1.42e01e, mp4a.40.2"'; if ('mediasource' in window && mediasource.istypesupported(mimecodec)) { var mediasource = new mediasource(); //console.log(mediasource.
readystate); // closed video.src = url.createobjecturl(mediasource); mediasource.addeventlistener('sourceopen', sourceopen); } else { console.error('unsupported mime type or codec: ', mimecodec); } function sourceopen (_) { //console.log(this.
readystate); // open var mediasource = this; var sourcebuffer = mediasource.addsourcebuffer(mimecodec); fetchab(asseturl, function (buf) { sourcebuf...
...fer.addeventlistener('updateend', function (_) { mediasource.endofstream(); video.play(); //console.log(mediasource.
readystate); // ended }); sourcebuffer.appendbuffer(buf); }); }; function fetchab (url, cb) { console.log(url); var xhr = new xmlhttprequest; xhr.open('get', url); xhr.responsetype = 'arraybuffer'; xhr.onload = function () { cb(xhr.response); }; xhr.send(); }; specifications specification status comment media source extensionsthe definition of 'mediasource' in that specification.
PerformanceTiming - Web APIs
performancetiming.domloading read only when the parser started its work, that is when its document.
readystate changes to 'loading' and the corresponding
readystatechange event is thrown.
... performancetiming.dominteractive read only when the parser finished its work on the main document, that is when its document.
readystate changes to 'interactive' and the corresponding
readystatechange event is thrown.
... performancetiming.domcomplete read only when the parser finished its work on the main document, that is when its document.
readystate changes to 'complete' and the corresponding
readystatechange event is thrown.
Writing WebSocket client applications - Web APIs
var examplesocket = new websocket("wss://www.example.com/socketserver", "protocolone"); on return, examplesocket.
readystate is connecting.
... the
readystate will become open once the connection is ready to transfer data.
... if you want to open a connection and are flexible about the protocols you support, you can specify an array of protocols: var examplesocket = new websocket("wss://www.example.com/socketserver", ["protocolone", "protocoltwo"]); once the connection is established (that is,
readystate is open), examplesocket.protocol will tell you which protocol the server selected.
Synchronous and asynchronous requests - Web APIs
var xhr = new xmlhttprequest(); xhr.open("get", "/bar/foo.txt", true); xhr.onload = function (e) { if (xhr.
readystate === 4) { if (xhr.status === 200) { console.log(xhr.responsetext); } else { console.error(xhr.statustext); } } }; xhr.onerror = function (e) { console.error(xhr.statustext); }; xhr.send(null); line 2 specifies true for its third parameter to indicate that the request should be handled asynchronously.
...this handler looks at the request's
readystate to see if the transaction is complete in line 4; if it is, and the http status is 200, the handler dumps the received content.
...s done by setting the value of the timeout property on the xmlhttprequest object, as shown in the code below: function loadfile(url, timeout, callback) { var args = array.prototype.slice.call(arguments, 3); var xhr = new xmlhttprequest(); xhr.ontimeout = function () { console.error("the request for " + url + " timed out."); }; xhr.onload = function() { if (xhr.
readystate === 4) { if (xhr.status === 200) { callback.apply(xhr, args); } else { console.error(xhr.statustext); } } }; xhr.open("get", url, true); xhr.timeout = timeout; xhr.send(null); } notice the addition of code to handle the "timeout" event by setting the ontimeout handler.
XMLHttpRequest.response - Web APIs
the value is null if the request is not yet complete or was unsuccessful, with the exception that when reading text data using a responsetype of "text" or the empty string (""), the response can contain the response so far while the request is still in the loading
readystate (3).
...it works by creating an xmlhttprequest object and creating a listener for
readystatechange events such that that when
readystate changes to done (4), the response is obtained and passed into the callback function provided to load().
... var url = 'somepage.html'; //a local page function load(url, callback) { var xhr = new xmlhttprequest(); xhr.on
readystatechange = function() { if (xhr.
readystate === 4) { callback(xhr.response); } } xhr.open('get', url, true); xhr.send(''); } specifications specification status comment xmlhttprequest living standard whatwg living standard ...
XMLHttpRequest - Web APIs
xmlhttprequest.on
readystatechange an eventhandler that is called whenever the
readystate attribute changes.
... xmlhttprequest.
readystate read only returns an unsigned short, the state of the request.
... event handlers on
readystatechange as a property of the xmlhttprequest instance is supported in all browsers.
Cross-Origin Resource Sharing (CORS) - HTTP
code of this sort might be used in javascript deployed on foo.example: const xhr = new xmlhttprequest(); const url = 'https://bar.other/resources/public-data/'; xhr.open('get', url); xhr.on
readystatechange = somehandler; xhr.send(); this performs a simple exchange between the client and the server, using cors headers to handle the privileges: let's look at what the browser will send to the server in this case, and let's see how the server responds: get /resources/public-data/ http/1.1 host: bar.other user-agent: mozilla/5.0 (macintosh; intel mac os x 10.14; rv:71.0) gecko/20100101 firef...
... the following is an example of a request that will be preflighted: const xhr = new xmlhttprequest(); xhr.open('post', 'https://bar.other/resources/post-here/'); xhr.setrequestheader('x-pingother', 'pingpong'); xhr.setrequestheader('content-type', 'application/xml'); xhr.on
readystatechange = handler; xhr.send('<person><name>arun</name></person>'); the example above creates an xml body to send with the post request.
...content on foo.example might contain javascript like this: const invocation = new xmlhttprequest(); const url = 'http://bar.other/resources/credentialed-content/'; function callotherdomain() { if (invocation) { invocation.open('get', url, true); invocation.withcredentials = true; invocation.on
readystatechange = handler; invocation.send(); } } line 7 shows the flag on xmlhttprequest that has to be set in order to make the invocation with cookies, namely the withcredentials boolean value.
Navigation and resource timings - Web Performance
domloading when the parser started its work, that is when its document.
readystate changes to 'loading' and the corresponding
readystatechange event is thrown.
... dominteractive when the parser finished its work on the main document, that is when its document.
readystate changes to 'interactive' and the corresponding
readystatechange event is thrown.
... domcomplete when the parser finished its work on the main document, that is when its document.
readystate changes to 'complete' and the corresponding
readystatechange event is thrown.
ui/frame - Archive of obsolete content
it's the equivalent of the point where the frame's document.
readystate becomes "interactive": var { frame } = require("sdk/ui/frame"); var frame = new frame({ url: "./frame.html" }); frame.on("ready", ping); function ping(e) { // message only this frame instance e.source.postmessage("pong", e.origin); } arguments event : this contains two properties: source, which defines a postmessage() function which you can use to send messages back to this particu...
...it's the equivalent of the point where the frame's document.
readystate becomes "complete": var { frame } = require("sdk/ui/frame"); var frame = new frame({ url: "./frame.html" }); frame.on("load", ping); function ping(e) { e.source.postmessage("ping", "*"); } arguments event : this contains two properties: source, which defines a postmessage() function which you can use to send messages back to this particular frame instance.
Components.utils.importGlobalProperties
therefore
readystate must be checked, if it is not complete, then a load listener must be attached.
... once
readystate is complete then the objects can be used.
Document: DOMContentLoaded event - Web APIs
function dosomething() { console.info('dom loaded'); } if (document.
readystate === 'loading') { // loading hasn't finished yet document.addeventlistener('domcontentloaded', dosomething); } else { // `domcontentloaded` has already fired dosomething(); } live example html <div class="controls"> <button id="reload" type="button">reload</button> </div> <div class="event-log"> <label>event log:</label> <textarea readonly class="event-log-contents" rows="8" cols=...
...t: 2rem; } js const log = document.queryselector('.event-log-contents'); const reload = document.queryselector('#reload'); reload.addeventlistener('click', () => { log.textcontent =''; window.settimeout(() => { window.location.reload(true); }, 200); }); window.addeventlistener('load', (event) => { log.textcontent = log.textcontent + 'load\n'; }); document.addeventlistener('
readystatechange', (event) => { log.textcontent = log.textcontent + `
readystate: ${document.
readystate}\n`; }); document.addeventlistener('domcontentloaded', (event) => { log.textcontent = log.textcontent + `domcontentloaded\n`; }); result specifications specification status comment html living standardthe definition of 'domcontentloaded' in that specification.
EventSource - Web APIs
eventsource.
readystate read only a number representing the state of the connection.
... eventsource.close() closes the connection, if any, and sets the
readystate attribute to closed.
EventTarget.addEventListener() - Web APIs
ure (will be ignored) */) { var self=this; var wrapper=function(e) { e.target=e.srcelement; e.currenttarget=self; if (typeof listener.handleevent != 'undefined') { listener.handleevent(e); } else { listener.call(self,e); } }; if (type=="domcontentloaded") { var wrapper2=function(e) { if (document.
readystate=="complete") { wrapper(e); } }; document.attachevent("on
readystatechange",wrapper2); eventlisteners.push({object:this,type:type,listener:listener,wrapper:wrapper2}); if (document.
readystate=="complete") { var e=new event(); e.srcelement=window; wrapper2(e); } } else { this.attachevent("on"+t...
... } }; var removeeventlistener=function(type,listener /*, usecapture (will be ignored) */) { var counter=0; while (counter<eventlisteners.length) { var eventlistener=eventlisteners[counter]; if (eventlistener.object==this && eventlistener.type==type && eventlistener.listener==listener) { if (type=="domcontentloaded") { this.detachevent("on
readystatechange",eventlistener.wrapper); } else { this.detachevent("on"+type,eventlistener.wrapper); } eventlisteners.splice(counter, 1); break; } ++counter; } }; element.prototype.addeventlistener=addeventlistener; element.prototype.removeeventlistener=removeeventlistener; if (htmldocument) { htmldocument.proto...
FileReader - Web APIs
filereader.
readystate read only a number indicating the state of the filereader.
...upon return, the
readystate will be done.
HTMLMediaElement: loadeddata event - Web APIs
the
readystate just increased to ' + 'have_current_data or greater for the first time.'); }); using the onloadeddata event handler property: const video = document.queryselector('video'); video.onloadeddata = (event) => { console.log('yay!
... the
readystate just increased to ' + 'have_current_data or greater for the first time.'); }; specifications specification status html living standardthe definition of 'loadeddata media event' in that specification.
HTMLVideoElement.videoHeight - Web APIs
if the element's
readystate is htmlmediaelement.have_nothing, then the value of this property is 0, because neither video nor poster frame size information is yet available.
... if at any time the intrinsic size of the media changes and the element's
readystate isn't have_nothing, a resize event will be sent to the <video> element.
HTMLVideoElement.videoWidth - Web APIs
if the element's
readystate is htmlmediaelement.have_nothing, then the value of this property is 0, because neither video nor poster frame size information is yet available.
... if at any time the intrinsic size of the media changes and the element's
readystate isn't have_nothing, a resize event will be sent to the <video> element.
IDBRequest - Web APIs
each request has a
readystate that is set to the 'pending' state; this changes to 'done' when the request is completed or fails.
... idbrequest.
readystate read only the state of the request.
MediaSource.activeSourceBuffers - Web APIs
example the following snippet is based on a simple example written by nick desaulniers (view the full demo live, or download the source for further investigation.) function sourceopen (_) { //console.log(this.
readystate); // open var mediasource = this; var sourcebuffer = mediasource.addsourcebuffer(mimecodec); fetchab(asseturl, function (buf) { sourcebuffer.addeventlistener('updateend', function (_) { mediasource.endofstream(); console.log(mediasource.activesourcebuffers); // will contain the source buffer that was added above, // as it is selected for playing in the video play...
...er video.play(); //console.log(mediasource.
readystate); // ended }); sourcebuffer.appendbuffer(buf); }); }; ...
MediaSource.duration - Web APIs
invalidstateerror mediasource.
readystate is not equal to open, or one or more of the sourcebuffer objects in mediasource.sourcebuffers are being updated (i.e.
... their sourcebuffer.updating property is true.) example the following snippet is based on a simple example written by nick desaulniers (view the full demo live, or download the source for further investigation.) function sourceopen (_) { //console.log(this.
readystate); // open var mediasource = this; var sourcebuffer = mediasource.addsourcebuffer(mimecodec); fetchab(asseturl, function (buf) { sourcebuffer.addeventlistener('updateend', function (_) { mediasource.endofstream(); mediasource.duration = 120; video.play(); //console.log(mediasource.
readystate); // ended }); sourcebuffer.appendbuffer(buf); }); }; ...
MediaSource.isTypeSupported() - Web APIs
ew the full demo live, or download the source for further investigation.) var asseturl = 'frag_bunny.mp4'; // need to be specific for blink regarding codecs // ./mp4info frag_bunny.mp4 | grep codec var mimecodec = 'video/mp4; codecs="avc1.42e01e, mp4a.40.2"'; if ('mediasource' in window && mediasource.istypesupported(mimecodec)) { var mediasource = new mediasource; //console.log(mediasource.
readystate); // closed video.src = url.createobjecturl(mediasource); mediasource.addeventlistener('sourceopen', sourceopen); } else { console.error('unsupported mime type or codec: ', mimecodec); } function sourceopen (_) { //console.log(this.
readystate); // open var mediasource = this; var sourcebuffer = mediasource.addsourcebuffer(mimecodec); fetchab(asseturl, function (buf) { sourcebuf...
...fer.addeventlistener('updateend', function (_) { mediasource.endofstream(); video.play(); //console.log(mediasource.
readystate); // ended }); sourcebuffer.appendbuffer(buf); }); }; specifications specification status comment media source extensionsthe definition of 'istypesupported()' in that specification.
MediaStreamTrack - Web APIs
mediastreamtrack.
readystate read only returns an enumerated value giving the status of the track.
... events listen to these events using addeventlistener() or by assigning an event listener to the oneventname property of this interface: ended sent when playback of the track ends (when the value
readystate changes to ended).
RTCDataChannel.close() - Web APIs
the sequence of events which occurs in response to this method being called: rtcdatachannel.
readystate is set to "closing".
... the rtcdatachannel.
readystate property is set to "closed".
SourceBuffer.abort() - Web APIs
exceptions exception explanation invalidstateerror the mediasource.
readystate property of the parent media source is not equal to open, or this sourcebuffer has been removed from the mediasource.
...in lines 92-101, the seek() function is defined — note that abort() is called if mediasource.
readystate is set to open, which means that it is ready to receive new source buffers — at this point it is worth aborting the current segment and just getting the one for the new seek position (see checkbuffer() and getcurrentsegment().) specifications specification status comment media source extensionsthe definition of 'abort()' in that specification.
SourceBuffer - Web APIs
r further investigation.) var video = document.queryselector('video'); var asseturl = 'frag_bunny.mp4'; // need to be specific for blink regarding codecs // ./mp4info frag_bunny.mp4 | grep codec var mimecodec = 'video/mp4; codecs="avc1.42e01e, mp4a.40.2"'; if ('mediasource' in window && mediasource.istypesupported(mimecodec)) { var mediasource = new mediasource(); //console.log(mediasource.
readystate); // closed video.src = url.createobjecturl(mediasource); mediasource.addeventlistener('sourceopen', sourceopen); } else { console.error('unsupported mime type or codec: ', mimecodec); } function sourceopen (_) { //console.log(this.
readystate); // open var mediasource = this; var sourcebuffer = mediasource.addsourcebuffer(mimecodec); fetchab(asseturl, function (buf) { sourcebuf...
...fer.addeventlistener('updateend', function (_) { mediasource.endofstream(); video.play(); //console.log(mediasource.
readystate); // ended }); sourcebuffer.appendbuffer(buf); }); } function fetchab (url, cb) { console.log(url); var xhr = new xmlhttprequest; xhr.open('get', url); xhr.responsetype = 'arraybuffer'; xhr.onload = function () { cb(xhr.response); }; xhr.send(); } specifications specification status comment media source extensionsthe definition of 'sourcebuffer' in that specification.
A simple RTCDataChannel sample - Web APIs
when the local peer experiences an open or close event, the handlesendchannelstatuschange() method is called: function handlesendchannelstatuschange(event) { if (sendchannel) { var state = sendchannel.
readystate; if (state === "open") { messageinputbox.disabled = false; messageinputbox.focus(); sendbutton.disabled = false; disconnectbutton.disabled = false; connectbutton.disabled = true; } else { messageinputbox.disabled = true; sendbutton.disabled = true; connectbutton.disabled = false; disconnectbutton.disabled = true;...
... our example's remote peer, on the other hand, ignores the status change events, except for logging the event to the console: function handlereceivechannelstatuschange(event) { if (receivechannel) { console.log("receive channel's status has changed to " + receivechannel.
readystate); } } the handlereceivechannelstatuschange() method receives as an input parameter the event which occurred; this will be an rtcdatachannelevent.
XMLHttpRequest.getAllResponseHeaders() - Web APIs
example this example examines the headers in the request's
readystatechange event handler, xmlhttprequest.on
readystatechange.
... var request = new xmlhttprequest(); request.open("get", "foo.txt", true); request.send(); request.on
readystatechange = function() { if(this.
readystate == this.headers_received) { // get the raw header string var headers = request.getallresponseheaders(); // convert the header string into an array // of individual headers var arr = headers.trim().split(/[\r\n]+/); // create a map of header names to values var headermap = {}; arr.foreach(function (line) { var parts = line.split(': '); var header = parts.shift(); var value = parts.join(': '); ...
XMLHttpRequest.getResponseHeader() - Web APIs
example in this example, a request is created and sent, and a
readystatechange handler is established to look for the
readystate to indicate that the headers have been received; when that is the case, the value of the content-type header is fetched.
... var client = new xmlhttprequest(); client.open("get", "unicorns-are-teh-awesome.txt", true); client.send(); client.on
readystatechange = function() { if(this.
readystate == this.headers_received) { var contenttype = client.getresponseheader("content-type"); if (contenttype != my_expected_type) { client.abort(); } } } specifications specification status comment xmlhttprequestthe definition of 'getresponseheader()' in that specification.
XMLHttpRequest.responseText - Web APIs
you know the entire content has been received when the value of
readystate becomes xmlhttprequest.done (4), and status becomes 200 ("ok").
... example var xhr = new xmlhttprequest(); xhr.open('get', '/server', true); // if specified, responsetype must be empty string or "text" xhr.responsetype = 'text'; xhr.onload = function () { if (xhr.
readystate === xhr.done) { if (xhr.status === 200) { console.log(xhr.response); console.log(xhr.responsetext); } } }; xhr.send(null); specifications specification status comment xmlhttprequest living standard whatwg living standard ...
XMLHttpRequest.send() - Web APIs
}; xhr.send(null); // xhr.send('string'); // xhr.send(new blob()); // xhr.send(new int8array()); // xhr.send(document); example: post var xhr = new xmlhttprequest(); xhr.open("post", '/server', true); //send the proper header information along with the request xhr.setrequestheader("content-type", "application/x-www-form-urlencoded"); xhr.on
readystatechange = function() { // call a function when the state changes.
... if (this.
readystate === xmlhttprequest.done && this.status === 200) { // request finished.
Event reference
storage events change (see non-standard events) storage update events checking downloading error noupdate obsolete updateready value change events broadcast checkboxstatechange hashchange input radiostatechange
readystatechange valuechange uncategorized events invalid message message open show less common and non-standard events abortable fetch events event name fired when abort a dom request is aborted, i.e.
...
readystatechange event html5 and xmlhttprequest the
readystate attribute of a document has changed.
Media events - Developer guides
this corresponds to the have_future_data
readystate.
... canplaythrough sent when the
readystate changes to have_enough_data, indicating that the entire media can be played without interruption, assuming the download rate remains at least at the current level.
Using SOAP in XULRunner 1.9 - Archive of obsolete content
req.setrequestheader("method", "post"); < req.setrequestheader("content-length", soapclient.contentlength); < req.setrequestheader("soapserver", soapclient.soapserver); < req.setrequestheader("soapaction", soapreq.action); < } < }); --- > var xhr = new xmlhttprequest(); > xhr.mozbackgroundrequest = true; > xhr.open('post', soapclient.proxy, true); > xhr.on
readystatechange = function() { > if (4 != xhr.
readystate) { return; } > getresponse(xhr); > }; > var headers = { > 'method': 'post', > 'content-type': soapclient.contenttype + '; charset="' + > soapclient.charset + '"', > 'content-length': soapclient.contentlength, > 'soapserver': soapclient.soapserver, > 'soapaction': soapreq.action > }; > for (var h in headers...
Sending forms through JavaScript - Learn web development
file.dom.addeventlistener( "change", function () { if( reader.
readystate === filereader.loading ) { reader.abort(); } reader.readasbinarystring( file.dom.files[0] ); } ); // senddata is our main function function senddata() { // if there is a selected file, wait it is read // if there is not, delay the execution of the function if( !file.binary && file.dom.files.length > 0 ) { settimeout( senddata, 10 ); return; } ...
nsIXMLHttpRequest
the 'onload', 'onerror', and 'on
readystatechange' attributes moved to nsijsxmlhttprequest, but if you're coding in c++ you should avoid using those.
EventSource.close() - Web APIs
the close() method of the eventsource interface closes the connection, if one is made, and sets the eventsource.
readystate attribute to 2 (closed).
Using files from web applications - Web APIs
><!doctype html> <html> <head> <title>dnd binary upload</title> <meta http-equiv="content-type" content="text/html; charset=utf-8"> <script type="application/javascript"> function sendfile(file) { const uri = "/index.php"; const xhr = new xmlhttprequest(); const fd = new formdata(); xhr.open("post", uri, true); xhr.on
readystatechange = function() { if (xhr.
readystate == 4 && xhr.status == 200) { alert(xhr.responsetext); // handle response.
FileReader.readAsText() - Web APIs
when the read operation is complete, the
readystate is changed to done, the loadend event is triggered, and the result property contains the contents of the file as a text string.
Audio() - Web APIs
determining when playback can begin there are three ways you can tell when enough of the audio file has loaded to allow playback to begin: check the value of the
readystate property.
HTMLMediaElement - Web APIs
htmlmediaelement.
readystate read only returns a unsigned short (enumeration) indicating the readiness state of the media.
HTMLTrackElement - Web APIs
htmltrackelement.
readystate read only returns an unsigned short that show the readiness state of the track: constant value description none 0 indicates that the text track's cues have not been obtained.
Basic concepts - Web APIs
they also have
readystate, result, and errorcode properties that tell you the status of the request.
MediaSource.MediaSource() - Web APIs
for further investigation.) var video = document.queryselector('video'); var asseturl = 'frag_bunny.mp4'; // need to be specific for blink regarding codecs // ./mp4info frag_bunny.mp4 | grep codec var mimecodec = 'video/mp4; codecs="avc1.42e01e, mp4a.40.2"'; if ('mediasource' in window && mediasource.istypesupported(mimecodec)) { var mediasource = new mediasource; //console.log(mediasource.
readystate); // closed video.src = url.createobjecturl(mediasource); mediasource.addeventlistener('sourceopen', sourceopen); } else { console.error('unsupported mime type or codec: ', mimecodec); } ...
MediaSource.sourceBuffers - Web APIs
example the following snippet is based on a simple example written by nick desaulniers (view the full demo live, or download the source for further investigation.) function sourceopen (_) { //console.log(this.
readystate); // open var mediasource = this; var sourcebuffer = mediasource.addsourcebuffer(mimecodec); fetchab(asseturl, function (buf) { sourcebuffer.addeventlistener('updateend', function (_) { mediasource.endofstream(); console.log(mediasource.sourcebuffers); // will contain the source buffer that was added above video.play(); //console.log(mediasource.
readystate); // e...
MediaStream.ended - Web APIs
this property has been removed from the specification; you should instead rely on the ended event or check the value of mediastreamtrack.
readystate to see if its value is "ended" for the track or tracks you want to ensure have finished playing.
MediaStream - Web APIs
this has been removed from the specification; you should instead check the value of mediastreamtrack.
readystate to see if its value is ended for the track or tracks you want to ensure have finished playing.
PerformanceTiming.domComplete - Web APIs
the legacy performancetiming.domcomplete read-only property returns an unsigned long long representing the moment, in miliseconds since the unix epoch, when the parser finished its work on the main document, that is when its document.
readystate changes to 'complete' and the corresponding
readystatechange event is thrown.
PerformanceTiming.domInteractive - Web APIs
the legacy performancetiming.dominteractive read-only property returns an unsigned long long representing the moment, in miliseconds since the unix epoch, when the parser finished its work on the main document, that is when its document.
readystate changes to 'interactive' and the corresponding
readystatechange event is thrown.
PerformanceTiming.domLoading - Web APIs
the legacy performancetiming.domloading read-only property returns an unsigned long long representing the moment, in miliseconds since the unix epoch, when the parser started its work, that is when its document.
readystate changes to 'loading' and the corresponding
readystatechange event is thrown.
RTCDataChannel.send() - Web APIs
exceptions invalidstateerror since the data channel uses a separate transport channel from the media content, it must establish its own connection; if it hasn't finished doing so (that is, its
readystate is "connecting"), this error occurs without sending or buffering the data.
RTCDataChannel - Web APIs
if no protocol was specified when the data channel was created, then this property's value is "" (the empty string).
readystate read only the read-only rtcdatachannel property
readystate returns an enum of type rtcdatachannelstate which indicates the state of the data channel's underlying data connection.reliable read only the read-only rtcdatachannel property reliable indicates whether or not the data channel is reliable.stream read only the deprecated (and never part of the official specification) read-only rt...
SourceBuffer.changeType() - Web APIs
usage notes if the parent mediasource is in its "ended"
readystate, calling changetype() will transition the media source to the "open"
readystate and fire a simple event named sourceopen at the parent media source.
WebSocket.onclose - Web APIs
the websocket.onclose property is an eventhandler that is called when the websocket connection's
readystate changes to closed.
WebSocket.onopen - Web APIs
the websocket.onopen property is an eventhandler that is called when the websocket connection's
readystate changes to 1; this indicates that the connection is ready to send and receive data.
Window: load event - Web APIs
ht: 2rem; } js const log = document.queryselector('.event-log-contents'); const reload = document.queryselector('#reload'); reload.addeventlistener('click', () => { log.textcontent =''; window.settimeout(() => { window.location.reload(true); }, 200); }); window.addeventlistener('load', (event) => { log.textcontent = log.textcontent + 'load\n'; }); document.addeventlistener('
readystatechange', (event) => { log.textcontent = log.textcontent + `
readystate: ${document.
readystate}\n`; }); document.addeventlistener('domcontentloaded', (event) => { log.textcontent = log.textcontent + `domcontentloaded\n`; }); result specifications specification status comment ui eventsthe definition of 'load' in that specification.
Window: popstate event - Web APIs
if new-entry's document is already fully loaded and ready—that is, its
readystate is complete—and the document is not already visible, it's made visible and the pageshow event is fired at the document with the pagetransitionevent's persisted attribute set to true.
HTML in XMLHttpRequest - Web APIs
this test file is small and is not well-formed xml: <title>&&<</title> if the file is named detect.html, the following function can be used for detecting html parsing support: function detecthtmlinxhr(callback) { if (!window.xmlhttprequest) { window.settimeout(function() { callback(false); }, 0); return; } var done = false; var xhr = new window.xmlhttprequest(); xhr.on
readystatechange = function() { if (this.
readystate == 4 && !done) { done = true; callback(!!(this.responsexml && this.responsexml.title && this.responsexml.title == "&&<")); } } xhr.onabort = xhr.onerror = function() { if (!done) { done = true; callback(false); } } try { xhr.open("get", "detect.html"); xhr.responsetype = "document"; xhr.send(); ...