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(function(){})( window.EventUtil={ addHandler:function(element,type,handler){ // alert(1); if(element) { //alert(2); if(element.addEventListener) { // alert(3); element.addEventListener(type,handler,false); }else
if(element.attachEvent) { // alert(4); element.attachEvent("on"+type,handler); }else{ // alert(5); element["on"+type]=handler; } } }, removeHandler:function(element,type,handler){ if(element) { if(element.removeEventListener){ element.removeEventListener(type,handler,false); }else
if(element.detachEvent){ element.detachEvent("on"+type,handler); }else{ element["on"+type]=null; } } }, addReady: function(fn){ if(document.addEventListener){//兼容非IE document.addEventListener("DOMContentLoaded",function(){ //注销事件，避免反复触发 document.removeEventListener("DOMContentLoaded",arguments.callee,false); fn();//调用参数函数 },false); }else
if(document.attachEvent){//兼容IE IEContentLoaded (window, fn); } function IEContentLoaded (w, fn) { var
d = w.document, done = false, // only fire once init = function () { if
(!done) { done = true; fn(); } }; // polling for no errors (function () { try
{ // throws errors until after ondocumentready d.documentElement.doScroll(‘left‘); } catch
(e) { setTimeout(arguments.callee, 50); return; } // no errors, fire init(); })(); // trying to always fire before onload d.onreadystatechange = function() { if
(d.readyState == ‘complete‘) { d.onreadystatechange = null; init(); } }; } }, getEvent:function(event){ return
event?window.event:event; }, getEventTarget:function(event){ return
event.target||event.srcElement; }, preventDefault:function(event){ if(event.preventDefault){ event.preventDefault(); }else{ event.returnValue=false; } }, stopPropagation:function(event){ if(event.stopPropagation){ event.stopPropagation(); } else{ event.cancelBubble=true; } }, ajax:(function (){ function request (url,opt){ function createXHR(){ if(typeof
XMLHttpRequest != "undefined"){ createXHR = function(){ return
new XMLHttpRequest(); }; }else
if(typeof
ActiveXObject != "undefined"){ createXHR = function(){ if(typeof
arguments.callee.activeXString != "string"){ var
versions = ["MSXML2.XMLHttp.6.0","MSXML2.XMLHttp.3.0","MSXML2.XMLHttp"]; for(var
i = 0, len = versions.length; i < len; i++){ try{ var
xhr = new
ActiveXObject(version[i]); arguments.callee.activeXString = version[i]; return
xhr; }catch(ex){//skip } } } return
new ActiveXObject(arguments.callee.activeXString); }; }else{ createXHR = function(){ throw
new Error("No XHR Object available."); }; } return
createXHR(); } function fn(){} var
async=opt.async!==false, method=opt.method||"Get", data=opt.data||null, success=opt.success||fn, failure=opt.failure||fn; method=method.toLocaleLowerCase(); if(method=="get"&&data){ url+=(url.indexOf(‘?‘)==-1?‘?‘:‘&‘)+data; } var
xhr=createXHR(); xhr.onreadystatechange=function(){ _onStateChange(xhr,success,failure); } if(method=="post"){ xhr.setRequestHeader(‘Content-type‘, ‘application/x-www-form-urlencoded;‘); } xhr.open(method,url,async); xhr.send(data); return
xhr; } function _onStateChange(xhr,success,failure){ if(xhr.readyState == 4){ var
s = xhr.status; if(s>= 200 && s < 300){ success(xhr); }else{ failure(xhr); } }else{} } return
{request:request} })() }); |
原文：http://www.cnblogs.com/qqloving/p/3562577.html