JSON对象

var txt={"name":"zz","age":18,"phone":"123456"};
    console.log(typeof txt); //object
    console.log(txt);
    console.log(txt.name);//zz
    console.log(txt[‘age‘]);//18

var txt1=[
        {"name":"xx","age":20},
        {"name":"rr","age":30}
    ]
    console.log(typeof txt1)
    console.log(txt1);
    console.log(txt1[0]);
    console.log(txt1[0].name);//xx
    console.log(txt1[1]["age"]);//30

var txt2=‘{"employ":[‘ +
            ‘{"name":"zxr","age":20},‘ +
            ‘{"name":"zzxxrr","age":20}‘ +
            ‘]‘ +
            ‘}‘;

 var txt3=‘{"employ":[{"name":"zxr","age":20},{"name":"zzxxrr","age":20}]}‘;//也可以这么写

    console.log(typeof txt2);//string
    console.log(txt2.employ);//不能直接这么用，需要转化成对象
    var obj = eval ("(" + txt2 + ")");//转化
    console.log(obj);
    console.log(obj.employ[1].name);
    console.log(obj.employ[1]["age"]);