request.js

BBWPS 宾馆管理系统 php+mysql

	var http_request = false;
	function request(){
		http_request = false;
    //开始初始化XMLHttpRequest对象
    if(window.XMLHttpRequest) { //Mozilla 浏览器
    http_request = new XMLHttpRequest();
    if (http_request.overrideMimeType) {//设置MiME类别
        http_request.overrideMimeType('text/xml');
    }
     }
else if (window.ActiveXObject) { // IE浏览器
try {
http_request = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
http_request = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {}
}
}
if (!http_request) { // 异常，创建对象实例失败
window.alert("不能创建XMLHttpRequest对象实例.");
return false;
}
else{
	return http_request;
}
}