js中的json对象

标签：json   书写方式   

           {名称1:值,名称2:值2}

       ]
      5 )元素值可具有的类型：string, number, object, array, true, false, null 

2.json中的五种写法：

1）传统方式存储数据，调用数据

	<script type="text/javascript">
  		//JS传统方式下定义"类"
  		function Person(id,name,age){
  			this.id = id;
  			this.name = name;
  			this.age = age;				
  		}	
  		//JS传统方式下创建"对象"
  		var p = new Person(20141028,"一叶扁舟",22);
  		
  		//调用类中的属性，显示该Person的信息
  		window.alert(p.id);
  		window.alert(p.name);
  		window.alert(p.age);
  	</script>

 <script type="text/javascript">
   var person = {
    id:001,
    name:"一叶扁舟",
    age:23
   }
   window.alert("编号:"+person.id);
   window.alert("用户名:"+person.name);
   window.alert("年龄:"+person.age);
   </script>

		<script type="text/javascript">
	var p = [
	{id:001,name:"一叶扁舟",age:22},
	{id:002,name:"无悔",age:23},
	{id:003,name:"无悔_一叶扁舟",age:24}
	];
   
   for(var i = 0; i < p.length; i++){
     window.alert("编号:"+p[i].id);
     window.alert("用户名:"+p[i].name);
     window.alert("年龄:"+p[i].age);
   
   }
   </script>

  	<script type="text/javascript">
		var p = {
			"province":[
				{"city":"福州"},
				{"city":"厦门"},
				{"city":"莆田"}
			]
		};
		window.alert("所在城市：" + p.province[0].city);
  	</script>

	<script type="text/javascript">
		var p = {
		   "ids":[
			{"id":001},
			{"id":002},
			{"id":003}
			],
		  "names":[
			{"name":"一叶扁舟"},
			{"name":"无悔"},
			{"name":"无悔_一叶扁舟"}
			]
		};
  
   for(var i = 0; i < p.names.length; i++){
     window.alert("名字:"+p.names[i].name);

   }
    for(var i = 0; i < p.ids.length; i++){
   	 window.alert("id:"+p.ids[i].id);
    }
       	
</script>

<script type="text/javascript">
		var p = {
			"province":["福州","厦门","莆田"]		
		};
		window.alert("城市的个数:"+p.province.length);
		window.alert("分别是：\n");
		for(var i=0;i<p.province.length;i++){
			window.alert(p.province[i]);
		}
  	</script>

js中的json对象

标签：json   书写方式   

原文地址：http://blog.csdn.net/u011662320/article/details/40541363