代码：
<html>
<body>
<h2>通过 JSON 字符串来创建对象</h3>
<p>
First Name: <span id="fname"></span><br />
Last Name: <span id="lname"></span><br />
</p>
<script type="text/javascript">
var txt = '{"employees":[' +
'{"firstName":"Bill","lastName":"Gates" },' +
'{"firstName":"George","lastName":"Bush" },' +
'{"firstName":"Thomas","lastName":"Carter" }]}';//employees对象是包含三个对象的数组；
var obj = eval ("(" + txt + ")");//eval()方法，用JSON数据生成原生Javascript对象；
document.getElementById("fname").innerHTML=obj.employees[1].firstName
document.getElementById("lname").innerHTML=obj.employees[1].lastName
</script>
</body>
</html>
运行结果：
通过 JSON 字符串来创建对象
First Name: George
Last Name: Bush