在代码:
function createXHR(){
if(typeof XMLHttpRequest !="undefined"){
return new XMLHttpRequest();
}else if(typeof ActiveXObject !="undefined"){
if(typeof arguments.callee.activeXString !="string"){
var versions = ["MSXML2.XMLHttp.6.0","MSXML2.XMLHttp.3.0","MSXML2.XMLHttp"];
var i,len;
for (i=0,len=versions.length;i
在上述代码中activeXString是什么呢
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function Foo() {
};
Foo.activeXString = 'foo';