数组转json格式字符串

const obj = {
    username:"zhangsan",
    hobby:["足球","篮球","乒乓球"],
    nickName:"saner",
    age:18,
    family:{
father:"zhanger",
mother:"lisi"
    },
};
// js对象转json格式字符串
const jsonString = JSON.stringify(obj)

// json字符串转原来的数据
const jsObj= JSON.parse(jsonString)
console.log(jsObj);