实例代码：
<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
