es6:Spread Operator展开运算符

//组装对象或者数组

const color =["red","blue"];
const colorful=[...color,'green','pink']
console.log(colorful)

const alp= {first:"a",second:"b"}
const alphabets={...alp,third:'c'}
console.log(alphabets);

//获取数组或者对象除了前几项或者除了某几项的其他项

const number=[1,2,3,4,5]
const [first,...rest]=number;
console.log(rest);

const user ={
	username:'abc',
	gender:'fee',
	age:11,
	address:"asdasda"
}
const {age,...rest1}=user
console.log(rest1)

//Object ，还可以用于组合成新的 Object 。如果有重复的属性名，右边覆盖左边。

const arr1={
	a:1,
	b:2,
	c:3,
}
const arr2={
	c:4,
	d:5,
}
const total={...arr1,...arr2}
console.log(total)