欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

XMLHttpRequest和ActiveXObject学习

程序员文章站 2022-05-18 23:54:05
//var xmlHttpReq = new ActiveXObject("MSXML2.XMLHTTP.3.0"); //定义变量,存储对象 var xmlHttp; //...
//var xmlHttpReq = new ActiveXObject("MSXML2.XMLHTTP.3.0");

//定义变量,存储对象
var xmlHttp;
// 创建XMLHttpRequest对象
if (window.ActiveXObject) {
xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
} else if (window.XMLHttpRequest) {
xmlHttpReq = new XMLHttpRequest();
}

xmlHttpReq.open("GET", "https://localhost:9090/html5/test", false);
xmlHttpReq.onreadystatechange = handleStateChange;
xmlHttpReq.send();

// xmlHttpReq.responseText
// xmlHttpReq.responseXML

var htmlObj = "";
htmlObj += "=============状态码=================
";
htmlObj += "status=" + xmlHttpReq.status + "
";
htmlObj += "statusText=" + xmlHttpReq.statusText + "
";
htmlObj += "=============头信息=================
";
htmlObj += "heads=" + xmlHttpReq.getAllResponseHeaders() + "
";
htmlObj += "Content-Length=" + xmlHttpReq.getResponseHeader("Content-Length") + "
";
htmlObj += "=============返回信息=================
";
htmlObj += "responseStream=" + xmlHttpReq.responseStream + "
";

var obj = document.getElementById("showDiv");
obj.innerHTML = htmlObj;

function handleStateChange() {
// 请求的状态有5个值:0=未初始化;1=正在加载;2=已经加载;3=交互中;4=完成;
if (xmlHttpReq.readyState == 4) {
// 200对应OK,如404=未找到网页
if (xmlHttpReq.status == 200) {
// alert(xmlHttpReq.responseText);
}
}
}