Object获取对象属性的方法

let triangle={
a:1,
b:2,
c:3
}
 

function coloTriangle(){
this.color='red';
}
 

coloTriangle.prototype=triangle;
let color=new coloTriangle();
Object.defineProperty(color,'auto',{
value:'auto'
})
let symbolProp=Symbol('symbol');
color[symbolProp]='symbol'

*Reflect.ownKeys:Object.getOwnPropertyNames(target).concat(Object.getOwnPropertySymbols)

• 没有来自继承的，都是own
• 不管枚举不枚举都能遍历
• 还可以拿到symbol类型属性
  */
  Reflect.ownKeys(color) //[“color”,“auto”,Symbol(symbol)]

Object.getOwnPropertyNames(color);//[“color”,“auto”]

Object.getOwnPropertySymbols(color);//[Symbol(symbol)]

Object.keys(color);//[“color”]

for(let i in color){
console.log(i);//color a b c
}