JSON格式

JSON格式：以下两种情况

1. {“a”:"A","b":"B","c":"C"}键值对，键值都用双引号括起来

2. JSON数组 [{“a”:"A","b":"B","c":"C"},{“a”:"A","b":"B","c":"C"},{“a”:"A","b":"B","c":"C"}]数组中有n个对象

只要满足以上格式，都为JSON格式

var a=JSON.parse('{"first": "x"}');
console.log(a.first);//把json格式字符串转变为JavaScript对象
var data=[{name:"wujieqiong"},{subject:"h5"},{action:"chifanfan"}];
console.log(JSON.stringify(data));//把JavaScript对象转变为json格式