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var xmlhttp;
function verify()
{
//2.´´½¨XmlHttpRequest¶ÔÏó
//ÕâÊÇXmlHttpRequest¶ÔÏóÎå²½ÖÐʹÓÃ×ÔÓµÄÒ»²½
//ÐèÒªÕë¶ÔIEºÍÆäËûÀàÐ͵Ää¯ÀÀÆ÷½¨Á¢Õâ¸ö¶ÔÏóµÄ²»Í¬·½Ê½Ð´²»Í¬µÄ´úÂë
if(window.XMLHttpRequest)
{
//Õë¶ÔFireFox,Mozillar,Opera(ÊÖ»ú),Safari(Æ»¹ûϵͳ),IE7,IE8
xmlhttp = new XMLHttpRequest();//×¢ÒâÕâÀïËùÓÐ×Öĸ´óСд²»ÄÜ´í
if(xmlhttp.overrideMimeType)
{
//Õë¶ÔÄ³Ð©ÌØ¶¨°æ±¾µÄmozillarµÄä¯ÀÀÆ÷µÄbug½øÐÐÐÞÕý
xmlhttp.overrideMimeType("text/xml");
}
}
else if(window.ActiveXObject) //×¢ÒâÕâÀïËùÓÐ×Öĸ´óСд²»ÄÜ´í
{
//Õë¶ÔIE6,IE5.5,IE5
//Á½¸ö¿ÉÒÔÓÃÓÚ´´½¨XMLHTTPRequest¶ÔÏóµÄ¿Ø¼þÃû³Æ£¬±£´æÔÚÒ»¸öÊý×éÖÐ
//ÅÅÔÚÇ°ÃæµÄ°æ±¾½ÏÐÂ
var activexName = ["MSZML2.XMLHTTP","Microsoft.XMLHTTP"];
for (var i=0;i<activexName.length;i++)
{
try{
//È¡³öÒ»¸ö¿Ø¼þÃû½øÐд´½¨£¬Èç¹û´´½¨³É¹¦¾ÍÖÕֹѻ·
//Èç¹û´´½¨Ê§°Ü£¬ÔòÅ׳öÒì³££¬È»ºó¿ÉÒÔ¼ÌÐøÑ»·£¬¼ÌÐø³¢ÊÔ´´½¨
xmlhttp = new ActiveXObject(activexName[i]);
break;
} catch(e) {}
}
}
if(!xmlhttp)
{
alert("XMLHttpRequest¶ÔÏó´´½¨Ê§°Ü!");
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