根据对象自身可遍历的键名或键值进行遍历，返回一个数组;根据对象自身可遍

var info={name: "Ablaze", sex: "男", city: "西安"}

Object.keys(info)    //["name", "sex", "city"]

Object.values(info)  //["Ablaze", "男", "西安"]

Object.entries(info)//[["name", "Ablaze"],["sex", "男"],["city", "西安"]]