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/**
* »ñµÃXMLHttpRequest¶ÔÏó
*/
function createXHR(){
var x=[function(){return new ActiveXObject("Msxm12.XMLHTTP");},function(){return xmhttp=new ActiveXObject("Microsoft.XMLHTTP");},
function(){return new XMLHttpRequest();}];
for (var i=0; i<x.length; i++) {
try {
return (x[i])();
} catch (e) {
}
};
}
·½·¨Ò»:
//´´½¨Ò»¸ö²¼¶ûÐͱäÁ¿,ÓÃÀ´¼ì²éÊÇ·ñΪºÏ·¨µÄIEʵÀý
var xmlreq = false;
//¼ì²éÊÇ·ñʹÓõÄÊÇIE
try {
//Èç¹ûJavaScriptµÄ°æ±¾´óÓÚ5
xmlreq = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e1) {
// Èç¹û²»ÊÇ,ÔòʹÓÃÀÏ°æ±¾µÄActiveX¶ÔÏóÀ´¼ì²é
try {
//Èç¹ûʹÓõÄÊÇIEä¯ÀÀÆ÷
xmlreq = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e2) {
// ·ñÔò¿Ï¶¨Ê¹ÓõÄÊÇ·ÇIEä¯ÀÀÆ÷
xmlreq=false;
}
}
}
//Èç¹ûʹÓõÄÊÇ·ÇIEä¯ÀÀÆ÷,Ôò´´½¨Ò»¸ö¸Ã¶ÔÏóµÄJavaSriptʵÀý
if(!xmlreq && typeof XMLHttpRequest!='undefined'){
xmlreq=new XMLHttpRequest();
}
·½·¨¶þ:
//´´½¨Ò»¸ö²¼¶ûÐͱäÁ¿,ÓÃÀ´¼ì²éÊÇ·ñΪºÏ·¨µÄIEʵÀý
var xmlreq = false;
//Èç¹ûActiveX¶ÔÏó¿ÉÓÃ,ÔòʹÓõĿ϶¨ÊÇIE
if (window.ActiveXObject) {
xmlreq = new ActiveXObject("Microsoft.XMLHTTP");
} else {
// ·ñÔò¿Ï¶¨Ê¹ÓÃJavaSript´¦Àí·½·¨
xmlreq=new XMLHttpRequest();
}
·½·¨Èý:
//´´½¨Ò»¸ö²¼¶ûÐͱäÁ¿,ÓÃÀ´¼ì²éÊÇ·ñΪºÏ·¨µÄIEʵÀý
var xmlreq = false;
//
if (window.XMLHttpRequest) {
// Èç¹ûʹÓõÄÊÇ·ÇIEä¯ÀÀÆ÷,Ôò´´½¨Ò»¸ö¸Ã¶ÔÏóµÄJavaSriptʵÀý
xmlreq = new XMLHttpRequest();
} else if (window.ActiveXObject) {
// Create XMLHttpRequest via MS ActiveX
try {
// Èç¹ûJavaScriptµÄ°æ±¾´óÓÚ5
xmlreq = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e1) {
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What is AJAX
This section is for those who have no idea what AJAX is. If you don’t fall into this category, feel free to skip to the next section.
AJAX stands for asynchronous JavaScript and XML. If you see another term XHR, which is shorthand for XML HTTP request, it’s the same thing. ......
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