把字符串为JSON格式的数据转换为Javascript对象
把javascript对象转换为JSON格式的字符串数据
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div id="demo"></div>
<script>
var text = ‘{ "sites" : [‘ +
‘{ "name":"Runoob" , "url":"www.runoob.com" },‘ +
‘{ "name":"Google" , "url":"www.google.com" },‘ +
‘{ "name":"Taobao" , "url":"www.taobao.com" } ]}‘;
console.log(text);
//{ "sites" : [{ "name":"Runoob" , "url":"www.runoob.com" },{ "name":"Google" , "url":"www.google.com" },{ "name":"Taobao" , "url":"www.taobao.com" } ]}
obj = JSON.parse(text);
console.log(obj);
//Object {sites: Array(3)}sites: Array(3)__proto__: Object
aa = JSON.stringify(obj);
console.log(aa);
//{"sites":[{"name":"Runoob","url":"www.runoob.com"},{"name":"Google","url":"www.google.com"},{"name":"Taobao","url":"www.taobao.com"}]}
document.getElementById("demo").innerHTML = obj.sites[1].name + " " + obj.sites[1].url;
</script>
</body>
</html>
原文：http://www.cnblogs.com/AmbiguousMiao/p/7298417.html