1.陣列-拆分

const arr =[1,2,3,4,5,6,7]
const [a,b,...c] = arr
console.log(a,b,c)

2.陣列-合併

const a = [1,2,3],b = [4,5,6]
const c = [...a,...b]
console.log(c)

3.字串-轉陣列

const [...arr] = 'string'

4.類陣列-轉陣列

const [...div] = document.getElementsByTagName('div')

5.實現迭代器介面的資料

const obj = {
     *[Symbol.iterator](){
          yield 
 
1
          yield 2
          yield 3
          yield 4
          yield 8
     }
}
console.log([...obj])

6.物件解構

let {name,age,...other} = {name:'zhangsan',age:18,job:'前端開發',province:'深圳'}
console.log(name,age,other)

7....賦值語句

 const obj = {a:1,b:2}
 const o = {a:8,c:13,...obj}

 const obj1 = {a:12,b:23}
 const obj 
 
= {c:89,d:99}
 const newobj = {...obj1,...obj2}

8.使用表示式

const isTrue = true
const obj = {...(isTrue? obj1:obj2),c:33}

9.三點（...）賦值解構陣列,會隱式呼叫其object方法

console.log({...[1,2,3]})
console.log({...'string'})

10.函式使用：... 獲取剩餘引數

 function demo(a,b,...params){
     console.log(params)
 }
 demo(1,2,3,4,5,6)

11.將陣列傳遞給引數

function demo(...args){
      console.log(args)
}
const arr = [2,3,4,5]
demo.apply(null,arr)
demo(...arr)

12.其它

不能解構 null 和undefined
結構是淺複製
... 無法解構原型屬性，屬性解構是可以的