json访问属性的2种方式

var person={
    name:'xiongwei',
    age:26,
    location:'ShenZhen'
 }
 console.log(person.name) //xiongwei
 console.log(person['name'])//xiongwei
 console.log(person[name])//undefined

注意：json以中括号的形式访问属性时必须打上双引号，否则undifined