📄 sample8_1.htm
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
<script language="javascript">
var http_request = false;
function send_request(url) {//初始化、指定处理函数、发送请求的函数
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;
}
http_request.onreadystatechange = processRequest;
// 确定发送请求的方式和URL以及是否同步执行下段代码
http_request.open("GET", url, true);
http_request.send(null);
}
// 处理返回信息的函数
function processRequest() {
if (http_request.readyState == 4) { // 判断对象状态
if (http_request.status == 200) { // 信息已经成功返回，开始处理信息
var returnObj = http_request.responseXML;
var xmlobj = http_request.responseXML;
var employees = xmlobj.getElementsByTagName("employee");
var feedbackStr = "";
for(var i=0;i<employees.length;i++) { // 循环读取employees.xml的内容
var employee = employees[i];
feedbackStr += "员工：" + employee.getAttribute("name");
feedbackStr += " 职位：" + employee.getElementsByTagName("job")[0].firstChild.data;
feedbackStr += " 工资：" + employee.getElementsByTagName("salary")[0].firstChild.data;
feedbackStr += "\r\n";
}
alert(feedbackStr);
} else { //页面不正常
alert("您所请求的页面有异常。");
}
}
}
</script>
</head>
<body>
<input type="button" name="read" value="读取XML" onClick="send_request('employees.xml')">
</body>
</html>
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