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最新推荐文章于 2025-04-06 10:10:48 发布

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最新推荐文章于 2025-04-06 10:10:48 发布

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分类专栏： AJAX 文章标签： json CSS JavaScript HTML Microsoft ViewUI

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <title>jsontest.html</title>

    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="this is my page">
    <meta http-equiv="content-type" content="text/html; charset=GB18030">
    

    <script type="text/javascript">
function createXMLHttpRequest() {
    var req;
    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
    }else if (window.ActiveXObject) {
        req = new ActiveXObject("Microsoft.XMLHTTP");
    }
    return req;
}
        var req = createXMLHttpRequest();
        function startRequest(){
            try{
                req.onreadystatechange = handleStateChange;
                req.open("GET", "user.txt", true);
                req.send(null);
            }catch(exception){
                alert("");
            }
        }
        function handleStateChange(){
            if(req.readyState == 4){
                 if (req.status == 200 || req.status == 0){
                    // 取得返回字符串
                    var resp = req.responseText;
                    // 构造返回JSON对象的方法
                    var func = new Function("return " + resp);
                    // 得到JSON对象
                    var json = func( );
                    // 显示返回结果
                    alert("userName: " + json.userName + " " + "sex: " + json.sex + " " + "age: " + json.age);
                  }
             }
         }
    </script>
</head>
<body>
    <div>
        <input type="button" value="json's value"
                οnclick="startRequest();" />
    </div>
</body>
</html>