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Source FileAjaxRequest.js (Right-click and "save as")
Other Source Options Full: Fully commented
File size8.5k
Last ModifiedJune 22, 2005

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// =================================================================== // Author: Matt Kruse <matt@ajaxtoolbox.com> // WWW: http://www.AjaxToolbox.com/ // // NOTICE: You may use this code for any purpose, commercial or // private, without any further permission from the author. You may // remove this notice from your final code if you wish, however it is // appreciated by the author if at least my web site address is kept. // // You may *NOT* re-distribute this code in any way except through its // use. That means, you can include it in your product, or your web // site, or any other form where the code is actually being used. You // may not put the plain javascript up on your site for download or // include it in your javascript libraries for download. // If you wish to share this code with others, please just point them // to the URL instead. // Please DO NOT link directly to my .js files from your site. Copy // the files to your server and use them there. Thank you. // =================================================================== function AjaxRequest(){var req =new Object(); req.timeout =null; req.generateUniqueUrl =true; req.url =window.location.href; req.method ="GET"; req.async =true; req.username =null; req.password =null; req.parameters =new Object(); req.requestIndex =AjaxRequest.numAjaxRequests++; req.responseReceived =false; req.groupName =null; req.queryString =""; req.responseText =null; req.responseXML =null; req.status =null; req.statusText =null; req.aborted =false; req.xmlHttpRequest =null; req.onTimeout=null; req.onLoading=null; req.onLoaded=null; req.onInteractive=null; req.onComplete=null; req.onSuccess=null; req.onError=null; req.onGroupBegin=null; req.onGroupEnd=null; req.xmlHttpRequest =AjaxRequest.getXmlHttpRequest(); if(req.xmlHttpRequest==null){return null;}req.xmlHttpRequest.onreadystatechange = function(){if(req==null || req.xmlHttpRequest==null){return;}if(req.xmlHttpRequest.readyState==1){req.onLoadingInternal(req);}if(req.xmlHttpRequest.readyState==2){req.onLoadedInternal(req);}if(req.xmlHttpRequest.readyState==3){req.onInteractiveInternal(req);}if(req.xmlHttpRequest.readyState==4){req.onCompleteInternal(req);}}; req.onLoadingInternalHandled=false; req.onLoadedInternalHandled=false; req.onInteractiveInternalHandled=false; req.onCompleteInternalHandled=false; req.onLoadingInternal= function(){if(req.onLoadingInternalHandled){return;}AjaxRequest.numActiveAjaxRequests++; if(AjaxRequest.numActiveAjaxRequests==1 && typeof(window['AjaxRequestBegin'])=="function"){AjaxRequestBegin();}if(req.groupName!=null){if(typeof(AjaxRequest.numActiveAjaxGroupRequests[req.groupName])=="undefined"){AjaxRequest.numActiveAjaxGroupRequests[req.groupName] =0;}AjaxRequest.numActiveAjaxGroupRequests[req.groupName]++; if(AjaxRequest.numActiveAjaxGroupRequests[req.groupName]==1 && typeof(req.onGroupBegin)=="function"){req.onGroupBegin(req.groupName);}}if(typeof(req.onLoading)=="function"){req.onLoading(req);}req.onLoadingInternalHandled=true;}; req.onLoadedInternal= function(){if(req.onLoadedInternalHandled){return;}if(typeof(req.onLoaded)=="function"){req.onLoaded(req);}req.onLoadedInternalHandled=true;}; req.onInteractiveInternal= function(){if(req.onInteractiveInternalHandled){return;}if(typeof(req.onInteractive)=="function"){req.onInteractive(req);}req.onInteractiveInternalHandled=true;}; req.onCompleteInternal= function(){if(req.onCompleteInternalHandled || req.aborted){return;}req.onCompleteInternalHandled=true; AjaxRequest.numActiveAjaxRequests--; if(AjaxRequest.numActiveAjaxRequests==0 && typeof(window['AjaxRequestEnd'])=="function"){AjaxRequestEnd(req.groupName);}if(req.groupName!=null){AjaxRequest.numActiveAjaxGroupRequests[req.groupName]--; if(AjaxRequest.numActiveAjaxGroupRequests[req.groupName]==0 && typeof(req.onGroupEnd)=="function"){req.onGroupEnd(req.groupName);}}req.responseReceived =true; req.status =req.xmlHttpRequest.status; req.statusText =req.xmlHttpRequest.statusText; req.responseText =req.xmlHttpRequest.responseText; req.responseXML =req.xmlHttpRequest.responseXML; if(typeof(req.onComplete)=="function"){req.onComplete(req);}if(req.xmlHttpRequest.status==200 && typeof(req.onSuccess)=="function"){req.onSuccess(req);}else if(typeof(req.onError)=="function"){req.onError(req);}delete req.xmlHttpRequest['onreadystatechange']; req.xmlHttpRequest =null;}; req.onTimeoutInternal= function(){if(req!=null && req.xmlHttpRequest!=null && !req.onCompleteInternalHandled){req.aborted =true; req.xmlHttpRequest.abort(); AjaxRequest.numActiveAjaxRequests--; if(AjaxRequest.numActiveAjaxRequests==0 && typeof(window['AjaxRequestEnd'])=="function"){AjaxRequestEnd(req.groupName);}if(req.groupName!=null){AjaxRequest.numActiveAjaxGroupRequests[req.groupName]--; if(AjaxRequest.numActiveAjaxGroupRequests[req.groupName]==0 && typeof(req.onGroupEnd)=="function"){req.onGroupEnd(req.groupName);}}if(typeof(req.onTimeout)=="function"){req.onTimeout(req);}delete req.xmlHttpRequest['onreadystatechange']; req.xmlHttpRequest =null;}}; req.process = function(){if(req.xmlHttpRequest!=null){if(req.generateUniqueUrl && req.method=="GET"){req.parameters["AjaxRequestUniqueId"] =new Date().getTime() + "" + req.requestIndex;}var content =null; for(var i in req.parameters){if(req.queryString.length>0){req.queryString +="&";}req.queryString +=encodeURIComponent(i) + "=" + encodeURIComponent(req.parameters[i]);}if(req.method=="GET"){if(req.queryString.length>0){req.url +=((req.url.indexOf("?")>-1)?"&":"?") + req.queryString;}}req.xmlHttpRequest.open(req.method,req.url,req.async,req.username,req.password); if(req.method=="POST"){if(typeof(req.xmlHttpRequest.setRequestHeader)!="undefined"){req.xmlHttpRequest.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');}content =req.queryString;}if(req.timeout>0){setTimeout(req.onTimeoutInternal,req.timeout);}req.xmlHttpRequest.send(content);}}; req.handleArguments = function(args){for(var i in args){if(typeof(req[i])=="undefined"){req.parameters[i] =args[i];}else{req[i] =args[i];}}}; req.getAllResponseHeaders = function(){if(req.xmlHttpRequest!=null){if(req.responseReceived){return req.xmlHttpRequest.getAllResponseHeaders();}alert("Cannot getAllResponseHeaders because a response has not yet been received");}}; req.getResponseHeader = function(headerName){if(req.xmlHttpRequest!=null){if(req.responseReceived){return req.xmlHttpRequest.getResponseHeader(headerName);}alert("Cannot getResponseHeader because a response has not yet been received");}}; return req;}AjaxRequest.getXmlHttpRequest =function(){if(window.XMLHttpRequest){return new XMLHttpRequest();}else if(window.ActiveXObject){/*@cc_on @*/ /*@if(@_jscript_version >=5) try{return new ActiveXObject("Msxml2.XMLHTTP");}catch(e){try{return new ActiveXObject("Microsoft.XMLHTTP");}catch(E){return null;}}@end @*/}else{return null;}}; AjaxRequest.isActive =function(){return(AjaxRequest.numActiveAjaxRequests>0);}; AjaxRequest.get =function(args){AjaxRequest.doRequest("GET",args);}; AjaxRequest.post =function(args){AjaxRequest.doRequest("POST",args);}; AjaxRequest.doRequest =function(method,args){if(typeof(args)!="undefined" && args!=null){var myRequest =new AjaxRequest(); myRequest.method =method; myRequest.handleArguments(args); myRequest.process();}}; AjaxRequest.submit =function(theform, args){var myRequest =new AjaxRequest(); if(myRequest==null){return false;}var serializedForm =AjaxRequest.serializeForm(theform); myRequest.method =theform.method.toUpperCase(); myRequest.url =theform.action; myRequest.handleArguments(args); myRequest.queryString =serializedForm; myRequest.process(); return true;}; AjaxRequest.serializeForm =function(theform){var els =theform.elements; var len =els.length; var queryString =""; this.addField = function(name,value){if(queryString.length>0){queryString +="&";}queryString +=encodeURIComponent(name) + "=" + encodeURIComponent(value);}; for(var i=0;i<len;i++){var el =els[i]; if(!el.disabled){switch(el.type){case 'text': case 'password': case 'hidden': case 'textarea': this.addField(el.name,el.value); break; case 'select-one': if(el.selectedIndex>=0){this.addField(el.name,el.options[el.selectedIndex].value);}break; case 'select-multiple': for(var j=0;j<el.options.length;j++){if(el.options[j].selected){this.addField(el.name,el.options[j].value);}}break; case 'checkbox': case 'radio': if(el.checked){this.addField(el.name,el.value);}break;}}}return queryString;}; AjaxRequest.numActiveAjaxRequests =0; AjaxRequest.numActiveAjaxGroupRequests =new Object(); AjaxRequest.numAjaxRequests =0;