這篇文章主要介紹了如何創(chuàng)建ajax對(duì)象并兼容多個(gè)瀏覽器,需要的朋友可以參考下
<script> function createAjax(){ var request=false; //window對(duì)象中有XMLHttpRequest存在就是非IE，包括（IE7以上版本） if(window.XMLHttpRequest){ request=new XMLHttpRequest(); if(request.overrideMimeType){ request.overrideMimeType("text/xml"); } //window對(duì)象中有ActiveXObject屬性存在就是IE }else if(window.ActiveXObject){ var versions=['Microsoft.XMLHTTP', 'MSXML.XMLHTTP', 'Msxml2.XMLHTTP.7.0','Msxml2.XMLHTTP.6.0','Msxml2.XMLHTTP.5.0', 'Msxml2.XMLHTTP.4.0', 'MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP']; for(var i=0; i<versions.length; i++){ try{ request=new ActiveXObject(versions[i]); if(request){ return request; } }catch(e){ request=false; } } } return request; } var ajax=createAjax(); alert(ajax); </script> 
