ES6初识-解构赋值

数组解构赋值

[a,b]=[1,2];

、

方法返回

function f(){

return [1,2]

}

let a,b;

[a,b]=f();//a=1,b=2

 

function f1(){

return [1,2,3,4,5]

}

let a,b;

[a,b]=f();//a=1,b=2

 

[a,,...b]=f1();//a=1;b=[3,4,5]

 

对象解构赋值

 

{a,b=1}={a:1,b:2}