getJSON

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"><html>  <head>    <title>ajax.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=UTF-8">    <script type="text/javascript" src="../../js/jquery-1.4.2.js"></script><script type="text/javascript"> $(function(){   $("#JSONbutton").bind("click",function(){$.getJSON("../../page/json/demo.json",function(data){ alert(data);//jquery 对json 的语法格式要求比较严格...alert(data.total);var array=data.rows;alert(array[0].username);alert(array[1].age);alert(array[2].sex);});  }) })</script>  </head>    <style type="text/css">  </style>    <body>    <input type="button" id="JSONbutton" value="getjson提交">  </body></html>

demo.json

{    "total":189,"rows":[{"username":"zhangsan"},{"age":18},{"sex":"weizhi"}]}

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