ajax-engine

 

function getHttpRequest() {
	var http_request;
	if (window.XMLHttpRequest) // Mozilla, Safari, ...
	{
		http_request = new XMLHttpRequest();// //如果浏览器直接支持window.XMLHttpRequest对象
	} else if (window.ActiveXObject) // IE，//如果浏览器支持window.ActiveXObject对象
	{
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {
			}
		}
	} else {
		alert('浏览器啥都不支持，我也只有啥都不干了!');
		return; // 浏览器啥都不支持，我也只有啥都不干了
	}
	
	return http_request;
}

function getHttpRequest2(){
	if(window.XMLHttpRequest){
		return new XMLHttpRequest();
	}else if(window.ActiveXObject){
		try{
			return new ActiveXObject("Msxml2.XMLHTTP");
		}catch(e){
			return new ActiveXObject("Microsoft.XMLHTTP");
		}
	}else{
		alert('请使用IE或者Firefox浏览器!');
		return;
	}
}

 

调用方法比较简单

			var http_request = getHttpRequest();
			if (!http_request) {
				alert('建议使用IE或Firefox浏览器!');
			} else {
				var linkurl = '/AjaxTest/ajax.jsp' + "?RecruitePerID=" + RecruitePerID
						+ "&TestPaperID=" + TestPaperID
						+ "&QuestionID=" + QuestionID
						+ "&QuestionAnswer=" + QuestionAnswer
						+ "&submitButtonFlag=" + submitButtonFlag
				http_request.open("GET", linkurl, false);
				http_request.send(null);
				var returntxt = unescape(http_request.responseText);
			}