ES6 字符串、数值与布尔值、函数参数的解构赋值

const str="hello world";
const [a,b,...oth]=str;

const str="hello world";
const [...str1]=str;
const str2=[...str];
const str3=str.split("");

const str="hello world";
const {length,split}=str;

const {valueOf}=1;
const {toString}=true;

//取别名
const {valueOf:vo}=1;
const {toString:ts}=true;

function swap([a,b]){
    return [b,a];
}
let arr=[1,2];
arr=swap(arr);

function getInfo({
    name,
    age,
    friend1="cyy1",
    friend2="cyy2"
}){
    console.log(name);
    console.log(age);
    console.log(friend1);
    console.log(friend2);
}

//无序传入参数
var obj={
    age:18,
    name:"cyy"    
}
getInfo(obj);