一个对象以“{”（左括号）開始，“}”（右括号）结束。每一个“名称”后跟一个“:”（冒号）。“‘名称/值’对”之间使用“,”（逗号）分隔。
<span style="font-size:18px;">{"person": {
"name":"Andy Budd",
"website":"http://andybudd.com/",
"email":"andy@clearleft.com"
}
}</span>
然后这个字符串会被当作 JavaScript 代码来运行。
由于
JSON 的字符串就是由 JavaScript 代码构成的。所以它本身是可运行的<%@ page language="java" pageEncoding="UTF-8"%>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>People at Clearleft</title>
<style type="text/css">
@import url("clearleft.css");
</style>
<script type="text/javascript">
window.onload=function(){
var aNodes=document.getElementsByTagName("a");
for(var i = 0;i < aNodes.length; i++){
aNodes[i].onclick=function(){
var request=new XMLHttpRequest();
var url=this.href;
var method="GET";
request.open(method,url);
request.send(null);
request.onreadystatechange=function(){
if(request.readyState==4){
if(request.status==200||request==304){
var result=request.responseText; //json被存储在responseText属性中
var object=eval("("+result+")"); //读取responseText中的json数据
var name= object.person.name; //读取json对象中存储的数据
var website= object.person.website;
var email= object.person.email;
var aNode=document.createElement("a");
aNode.appendChild(document.createTextNode(name+":"+"email"+":"+website));
aNode.href="mailTo"+"email"+",website";
var h2Node=document.createElement("h2");
h2Node.appendChild(aNode);
var dtails=document.getElementById("details");
details.innerHTML=""; //防止反复的加入字符串
dtails.appendChild(h2Node);
}
}
}
return false;
}
}
};
</script>
</head>
<body>
<h1>
People
</h1>
<ul>
<li>
<a href="files/andy.js">Andy</a>
</li>
<li>
<a href="files/richard.js">Richard</a>
</li>
<li>
<a href="files/jeremy.js">Jeremy</a>
</li>
</ul>
<div id="details"></div>
</body>
</html>原文：http://www.cnblogs.com/yangykaifa/p/7149903.html