对象遍历的方法

• Object.keys(obj)
• for in
• Object.getOwnPropertyNames(obj)
• Reflect.ownKeys(obj)
• Object.entries(obj) 返回的是对象自身有可枚举属性的键值对数组，即[[key,value],[key,value]……]，可结合for of来对对象进行遍历
• Object.values(obj) ```javascript let obj={ name:”mickey”, age:23, sex:”男” }

for(let v in obj){ console.log(keys is ${v} and value is ${obj[v]}); }

Object.keys(obj).forEach((key)=>{ console.log(key is ${key} and value is ${obj[key]}); })

Object.getOwnPropertyNames(obj).forEach((keyName)=>{ console.log(key is ${keyName} and value is ${obj[keyName]}); })

Reflect.ownKeys(obj).forEach((key)=>{ console.log(key is ${key} and value is ${obj[key]}); })

for (let [key,value] of Object.entries(obj)){ console.log(key is ${key} and value is ${value}); } ```