XMLHttpRequest.onreadystatechange - Web APIs
an eventhandler that is called whenever the readystate attribute changes. the callback is called from the user interface thread. the xmlhttprequest.onreadystatechange 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. warning: this should not be used with synchronous requests and must not be used from native code. syntax xmlhttprequest.onreadystatechange = callback; values callback is the function to be executed when the readystate changes. ...
...ttprequest changes. warning: this should not be used with synchronous requests and must not be used from native code. syntax xmlhttprequest.onreadystatechange = callback; values callback is the function to be executed when the readystate changes. ...

Getting Started - Developer guides
icrosoft.xmlhttp"); } note: for illustration purposes, the above is a somewhat simplified version of the code to be used for creating an xmlhttp instance. for a more realistic example, see step 3 of this article. after making a request, you will receive a response back. at this stage, you need to tell the xmlhttp request object which javascript function will handle the response, by setting the onreadystatechange property of the object and naming it after the function to call when the request changes state, like this: httprequest.onreadystatechange = 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 ...
...unction; 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.onreadystatechange = function(){ // process the server response here. }; next, after declaring what happens when you receive the response, you need to actually make the request, by calling the open() and send() methods of the http request object, like this: httprequest.open('get', 'http://www.example.org/some.file', true); httprequest.send(); the first parameter of the call to open() is the http request ...
...u want to post data, you may have to set the mime type of the request. 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.onreadystatechange = nameofthefunction; what should this function do? first, the function needs to check the request's state. if the state has the value of xmlhttprequest.done (corresponding to 4), that means that the full server response was received and it's ok for you to continue processing it. if (httprequest.readystate === xmlhttprequest.done) { // everything is good, the response was received. } else {...
...And 4 more matches

Cross-Origin Resource Sharing (CORS) - HTTP
ts no other browsers implement these extra restrictions, because they’re not part of the spec. for example, suppose web content at https://foo.example wishes to invoke content on domain https://bar.other. ...
...e actual request is safe to send. cross-site requests are preflighted like this since they may have implications to user data. 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.onreadystatechange = handler; xhr.send('<person><name>arun</name></person>'); the example above creates an xml body to send with the post request. also, a non-standard http x-pingother request header is set. such headers are not part of http/1.1, but are generally useful to web applications. since the request uses a content-type of application/xml, and since a custom header is set, this request is preflighted. ...
...oo.example makes a simple get request to a resource on http://bar.other which sets cookies. 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.onreadystatechange = 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. by default, the invocation is made without cookies. since this is a simple get request, it is not preflighted, but the browser will reject any response that does not have the access-control-allow-credentials: tr...

jspage - Archive of obsolete content
s: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;$try(function(){this.status=this.xhr.status;}.bind(this));this.xhr.onreadystatechange=$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:function(){return((this.status>=200)&&(this.status<300)); },processscripts:function(a){if(this.options.evalresponse||(/(ecma|java)script/).test(this.geth...
...tions.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.onreadystatechange=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.onreadystatechange=$empty;this.xhr=new browser.req...

Document.readyState - Web APIs
span = document.createelement("span"); span.textcontent = "a <span> element."; document.body.appendchild(span); break; case "complete": // the page is fully loaded. ...
...he first css rule is: " + document.stylesheets[0].cssrules[0].csstext); break; } readystatechange as an alternative to domcontentloaded event // alternative to domcontentloaded event document.onreadystatechange = function () { if (document.readystate === 'interactive') { initapplication(); } } readystatechange as an alternative to load event // alternative to load event document.onreadystatechange = function () { if (document.readystate === 'complete') { initapplication(); } } readystatechange as event listener to insert or modify the dom before domcontentloaded document.addeventlistener('readystatechange', event => { if (event.target.readystate === 'interactive') { initloader(); } else if (event.target.readystate === 'complete') { initapp(); } }); specificatio...

Document - Web APIs
cut represents the event handling code for the cut event. document.onfullscreenchange is an eventhandler representing the code to be called when the fullscreenchange event is raised. document.onfullscreenerror is an eventhandler representing the code to be called when the fullscreenerror event is raised. document.onpaste represents the event handling code for the paste event. document.onreadystatechange represents the event handling code for the readystatechange event. document.onselectionchange is an eventhandler representing the code to be called when the selectionchange event is raised. document.onvisibilitychange is an eventhandler representing the code to be called when the visibilitychange event is raised. the document interface is extended with the globaleventhandlers interface: ...
...ble via the onkeypress property. keyup fired when a key is released. also available via the onkeyup property. load & unload events domcontentloaded fired when the document has been completely loaded and parsed, without waiting for stylesheets, images, and subframes to finish loading. readystatechange fired when the readystate attribute of a document has changed. also available via the onreadystatechange property. pointer events gotpointercapture fired when when an element captures a pointer using setpointercapture(). also available via the ongotpointercapture property. lostpointercapture fired when a captured pointer is released. also available via the onlostpointercapture property. pointercancel fired when a pointer event is canceled. also available via the onpointercancel property...

EventTarget.addEventListener() - Web APIs
element; 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("onreadystatechange",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"+type,wrapper); eventlisteners.push({object:this,type:type,listener:listener,wrapper:wrapper}); } ...
... } }; 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("onreadystatechange",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.prototype.a...

Index - Web APIs
ttprequest, mozsystem, origin mozsystem is a boolean. if true, the same origin policy is not enforced on the request. 5183 xmlhttprequest.multipart api, gecko, mozilla, non-standard, obsolete, property, reference, xmlhttprequest, multipart this boolean indicates if the response is expected to be a stream of possibly multiple xml documents. ...
...ttprequest, multipart this boolean indicates if the response is expected to be a stream of possibly multiple xml documents. 5184 xmlhttprequest.onreadystatechange api, event, handler, property, reference, xhr, xmlhttprequest an eventhandler that is called whenever the readystate attribute changes. the callback is called from the user interface thread. the xmlhttprequest.onreadystatechange 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. 5185 xmlhttprequest.open() api, http, method, needsexample, reference, xhr, xmlhttprequest, open the xmlhttprequest method open() initializes a newly-created request, or re-initializes an existing one. 5186...

XMLHttpRequest.getAllResponseHeaders() - Web APIs
02\r\n x-xss-protection: 1; mode=block\r\n each line is terminated by both carriage return and line feed characters (\r\n). these are essentially delimiters separating each of the headers. note: in modern browsers, the header names are returned in all lower case, as per the latest spec. example this example examines the headers in the request's readystatechange event handler, xmlhttprequest.onreadystatechange. ...
... the headers in the request's readystatechange event handler, xmlhttprequest.onreadystatechange. the code shows how to obtain the raw header string, as well as how to convert it into an array of individual headers and then how to take that array and create a mapping of header names to their values. ...

XMLHttpRequest - Web APIs
rom a server, consider using server-sent events through the eventsource interface. for full-duplex communication, websockets may be a better choice. constructor xmlhttprequest() the constructor initializes an xmlhttprequest. it must be called before any other method calls. properties this interface also inherits properties of xmlhttprequesteventtarget and of eventtarget. xmlhttprequest.onreadystatechange an eventhandler that is called whenever the readystate attribute changes. xmlhttprequest.readystate read only returns an unsigned short, the state of the request. xmlhttprequest.response read only returns an arraybuffer, blob, document, javascript object, or a domstring, depending on the value of xmlhttprequest.responsetype, that contains the response entity body. xmlhttprequest.responset...
...background service request. xmlhttprequest.mozresponsearraybuffer obsolete since gecko 6 read only arraybuffer. the response to the request, as a javascript typed array. xmlhttprequest.multipartobsolete since gecko 22 this gecko-only feature, a boolean, was removed in firefox/gecko 22. please use server-sent events, web sockets, or responsetext from progress events instead. event handlers onreadystatechange as a property of the xmlhttprequest instance is supported in all browsers. since then, a number of additional event handlers have been implemented in various browsers (onload, onerror, onprogress, etc.). see using xmlhttprequest. more recent browsers, including firefox, also support listening to the xmlhttprequest events via standard addeventlistener() apis in addition to setting on* properties...

Communication between HTML and your extension - Archive of obsolete content
ssaging on existing components. next i started investigating events, there are only a handful of events and the w3c documentation is pretty complete. the basic problem with the event model is probably due to what i was trying to do. in my html i have an input element in a form. i set the onblur action to a little javascript function that performed a standard ajax request to get a result. the onreadystatechange was set to another little javascript function that would update a specific element on the html page with the result. the result of the ajax request was the something that i wanted the extension to find. there were only a handful of events that seemed relevant (load, change, dominsertnode, dominsertnodeintodocument, domactivate) and i tried them all in many different ways. some of the events only ...

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.onreadystatechange = 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) { xh...

nsIXMLHttpRequest
uest implements the interface nsidomeventtarget and that's how you're supported to add event listeners. try something like this: nscomptr<nsidomeventtarget> target(do_queryinterface(myxmlhttpreq)); target->addeventlistener(ns_literal_string("load"), mylistener, pr_false) where mylistener is your event listener object that implements the interface nsidomeventlistener. the 'onload', 'onerror', and 'onreadystatechange' attributes moved to nsijsxmlhttprequest, but if you're coding in c++ you should avoid using those. though actually, if you use addeventlistener from c++ weird things will happen too, since the result will depend on what js happens to be on the stack when you do it.... conclusion: do not use event listeners on xmlhttprequest from c++, unless you're aware of all the security implications. and th...

Document: readystatechange event - Web APIs
the readystatechange event is fired when the readystate attribute of a document has changed. ...

Using files from web applications - Web APIs
} }; fd.append('myfile', file); // initiate a multipart/form-data upload xhr.send(fd); } window.onload = function() { const dropzone = document.getelementbyid("dr...