shahab570

let first = [1,2,3,4];
let second = [...first];
console.log(second);   //[1,2,3,4]

shahab570

const first ={name: "john"};
const second ={age: 30};
const coord ={...first,...second};
console.log(coord); // {name: "john",age: 30};

shahab570

let country =["USA","CANADA","GERMANY"];
let [usa,...other] = country;

console.log(usa);    //USA
console.log(other);  //["CANADA","GERMANY"];

shahab570

let country =["USA","CANADA","GERMANY"];
let [usa,...other] = country;

console.log(usa);    //USA
console.log(other);  //["CANADA","GERMANY"];

shahab570

function sum(x,y,z) {
  return x + y + z;
}

const numbers =[1,2,3];
console.log(...numbers);     //1 2 3

shahab570

function sum(x,y,z) {
  let sum =  x + y + z;
  return sum;
}

console.log(sum(5,5,5,5));    //15

shahab570

var sum = 0;
function myFunction() {
  for (var i in arguments) {
    sum += arguments[i];
  }
  return sum;
}
console.log(myFunction(5, ...[5, 5, 5]));   //20

shahab570

function myFunction() {
  for (var i in arguments) {
    console.log(arguments[i]);
  }

}

var params =[10,15]
console.log(myFunction(5,...params);   // 5 10 15

shahab570

const x = new Date(...[2019, 15, 6]);
console.log(x); //script.js:39 Mon Apr 06 2020 00:00:00 GMT+0600 (Bangladesh Standard Time)

shahab570

function abc(...values) {
  return values;
}
console.log(abc(1,2,3));  //[1,2,3];