shahab570

var a = "first";
var b = "second";
var [a, b] = [b, a];
console.log(a);   //second
console.log(b);   //first

shahab570

let [firstName = prompt("What is your name?"), surname = prompt("surname?")] =["John"];
alert(firstName);
alert(surname);

shahab570

var [first="This", second = "is"] =["hello"];
console.log(first);       //hello
console.log(second);      //is

shahab570

function words() {
  return ["This", "is", "john", "Doe"];
}
var [first, second] = words();
console.log(first); //This
console.log(second); //is

shahab570

var words = ["This", "is", "john", "Doe"];
var [first, ...last] = words;
console.log(last); //["is","john","Doe"];

shahab570

var words = ["This", "is", "john", "Doe"];
var [first, , third] = words;
console.log(third);   //john

shahab570

var [first, second, third] = "USA";
console.log(first);   //U
console.log(second);  //S
console.log(third);   //A

shahab570

var words = ["This", "is", "john", "Doe"];
var [first, second] = words;
console.log(first);    //This
console.log(second);   //is

shahab570

var words = ["This", "is", "john", "Doe"];
var first = words[0];
var second = words[1];
console.log(first);     //This
console.log(second);    // is

shahab570

let take_bath = new Promise((resolve, reject) => {
  setTimeout(() => {
    resolve("I have finished my bath");
  }, 5000);
});

let eat = new Promise((resolve, reject) => {
  setTimeout(() => {
    resolve("I have finished eating");
  }, 3000);