通过 JSON 字符串来创建对象&通过eval()方法生成原生Javascript对象

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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

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