js怎样读取json里面的数据

---

var json = {  
        contry:{ 
            area:{ 
                man:"12万",  
                women:"10万" 
            } 
        }
    };
//方式一：使用eval解析  
	var obj = eval(json);  
		alert(obj.constructor);
		alert(obj.contry.area.women);  
 
//方式二：使用Funtion函数  
	var strJSON = "{name:'json name'}";//得到的JSON  
	var obj = new Function("return" + strJSON)();//转换后的JSON对象  
	    alert(obj.name);//json name  
	    alert(obj.constructor);
       
//复杂一点的json数组数据的解析  
var value1 = [
        {
            "a01":"1",
            "a02":"2",
            "a03":"3",
            "a04":"4",
        }, 
        {
            "b01":"2",
            "b02":"4",
            "b03":"5",
            "b04":"2",
        },
        {
            "c01":"5",
            "c02":"1",
            "c03":"4",
            "c04":"11",   
        }
    ];   
	var obj1 = eval(value1);  
	alert(obj1[0].c01); 
 
//复杂一点的json的另一种形式  
var value2 = {
        "list":[ 
            {
                "password":"1230",
                "username":"coolcooldool"
            }, 
            {
                "password":"thisis2",
                "username":"okokok"
            }
        ], 
        "array":[
            {
                "password":"1230",
                "username":"coolcooldool"
            },
            {
                "password":"thisis2",
                "username":"okokok"
            }
        ]
    };  
	var obj2 = eval(value2);  
	alert(obj2.list[0].password);