Created
April 2, 2014 13:17
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XDomainRequest polyfill for HTML4 browsers (IE7, IE6, etc.)
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| /* | |
| * XDomainRequest polyfill for HTML4 browsers (IE7, IE6, etc.) v0.1.0 | |
| * | |
| * Required: jClass 1.4.0+ | |
| * | |
| * Copyright 2012-2014, Dmitriy Pakhtinov ( spb.piksel@gmail.com ) | |
| * | |
| * http://spb-piksel.ru/ - https://github.com/devote | |
| * | |
| * Dual licensed under the MIT and GPL licenses: | |
| * http://www.opensource.org/licenses/mit-license.php | |
| * http://www.gnu.org/licenses/gpl.html | |
| * | |
| * Update: 02-04-2014 | |
| */ | |
| window.XDomainRequest = (function(window) { | |
| var | |
| document = window.document, | |
| documentElement = document.documentElement; | |
| function addEvent(elem, type, fn) { | |
| if (elem.addEventListener) { | |
| elem.addEventListener(type, fn, false); | |
| } else { | |
| elem.attachEvent("on" + type, fn); | |
| } | |
| } | |
| function removeEvent(elem, type, fn) { | |
| if (elem.removeEventListener) { | |
| elem.removeEventListener(type, fn, false); | |
| } else { | |
| elem.detachEvent("on" + type, fn); | |
| } | |
| } | |
| return window.XDomainRequest || jClass({"compact": 1}, function() { | |
| var iframe, | |
| iframeOnload, | |
| iframeOnError, | |
| timerHndl, | |
| _url = "", | |
| _responseText = "", | |
| _method, | |
| _timeout = 1000, | |
| _onerror = null, | |
| _onload = null, | |
| _onprogress = null, | |
| _ontimeout = null; | |
| return { | |
| "constructor": function() { | |
| iframe = document.createElement('iframe'); | |
| iframe.style.display = "none"; | |
| }, | |
| "abort": function() { | |
| timerHndl && clearTimeout(timerHndl); | |
| iframeOnload && removeEvent(iframe, "load", iframeOnload); | |
| iframeOnError && removeEvent(iframe, "error", iframeOnError); | |
| iframe.parentNode && iframe.parentNode.removeChild(iframe); | |
| iframeOnload = iframeOnError = timerHndl = null; | |
| }, | |
| "open": function(method, url) { | |
| url = (url + "").replace(/#.*$/, ""); | |
| _url = url + (url.indexOf("?") >= 0 ? "&" : "?") + | |
| "Access-Control-Allow-Origin=" + window.location.href; | |
| _method = method.toLowerCase() === "post" ? "post" : "get"; | |
| iframe.src="javascript:true"; | |
| }, | |
| "send": function(data) { | |
| data = data || {}; | |
| if (typeof data === "string") { | |
| var fields = data.split("&"); | |
| data = {}; | |
| for(var i = 0; i < fields.length; i++) { | |
| var field = fields[i].split("="); | |
| data[field.shift()] = field.join("="); | |
| } | |
| } | |
| var self = this; | |
| addEvent(iframe, "load", iframeOnload = function() { | |
| var idoc = iframe.contentWindow.document; | |
| removeEvent(iframe, "load", iframeOnload); | |
| idoc.open(); | |
| idoc.close(); | |
| iframe.contentWindow.name = window.location.href; | |
| addEvent(iframe, "load", iframeOnload = function() { | |
| var | |
| re = /^[\s\S]*?<body><plaintext>(?:>|>)([\s\S]*)$/ig, | |
| error = false; | |
| try { | |
| _responseText = iframe.contentWindow.name; | |
| } catch(__e__) { | |
| error = true; | |
| } | |
| if (!error) { | |
| self.abort.call(self); | |
| if (!re.test(_responseText+"")) { | |
| self.onerror && self.onerror.call(self); | |
| } else { | |
| var specialChars = !/^[\s\S]*?<body><plaintext>>/.test(_responseText); | |
| _responseText = (_responseText+""). | |
| replace(/(?:<\/plaintext><\/body>)?$/i, '').replace(re, '$1'); | |
| if (specialChars) { | |
| _responseText = _responseText. | |
| replace(/&/g, "&").replace(/</g, "<").replace(/>/g, ">"); | |
| } | |
| self.onprogress && self.onprogress.call(self); | |
| self.onload && self.onload.call(self); | |
| } | |
| } else { | |
| timerHndl = setTimeout(function() { | |
| self.abort.call(self); | |
| if (_timeout > 1000) { | |
| self.ontimeout && self.ontimeout.call(self); | |
| } else { | |
| self.onerror && self.onerror.call(self); | |
| } | |
| }, _timeout); | |
| } | |
| }); | |
| addEvent(iframe, "error", iframeOnError = function() { | |
| self.abort.call(self); | |
| self.onerror && self.onerror.call(self); | |
| }); | |
| if (_method === "post") { | |
| var form = idoc.createElement('form'); | |
| form.setAttribute("action", _url); | |
| form.setAttribute("method", _method); | |
| form.setAttribute("enctype", "multipart/form-data"); | |
| for(var key in data) { | |
| if (data.hasOwnProperty(key)) { | |
| var inp = idoc.createElement('input'); | |
| inp.type = "hidden"; | |
| inp.name = key; | |
| inp.value = data[key]; | |
| form.appendChild(inp); | |
| } | |
| } | |
| idoc.body.appendChild(form); | |
| form.submit(); | |
| } else { | |
| iframe.src = _url; | |
| } | |
| }); | |
| documentElement.firstChild.appendChild(iframe); | |
| }, | |
| "contentType": { | |
| get: function() { | |
| return ""; | |
| } | |
| }, | |
| "responseText": { | |
| get: function() { | |
| return _responseText; | |
| } | |
| }, | |
| "timeout": { | |
| set: function(value) { | |
| _timeout = (value >>> 0) + 1000; | |
| }, | |
| get: function() { | |
| return _timeout - 1000; | |
| } | |
| }, | |
| "onerror": { | |
| set: function(value) { | |
| _onerror = value; | |
| }, | |
| get: function() { | |
| return _onerror; | |
| } | |
| }, | |
| "onload": { | |
| set: function(value) { | |
| _onload = value; | |
| }, | |
| get: function() { | |
| return _onload; | |
| } | |
| }, | |
| "onprogress": { | |
| set: function(value) { | |
| _onprogress = value; | |
| }, | |
| get: function() { | |
| return _onprogress; | |
| } | |
| }, | |
| "ontimeout": { | |
| set: function(value) { | |
| _ontimeout = value; | |
| }, | |
| get: function() { | |
| return _ontimeout; | |
| } | |
| } | |
| } | |
| }); | |
| })(window); |
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