freeCodeCamp/curriculum/challenges/arabic/02-javascript-algorithms-and-data-structures/es6/use-the-spread-operator-to-evaluate-arrays-in-place.arabic.md

id	title	challengeType	videoUrl	localeTitle
587d7b89367417b2b2512b48	Use the Spread Operator to Evaluate Arrays In-Place	1

Description

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Instructions

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Tests

tests:
  - text: ''
    testString: 'assert(arr2.every((v, i) => v === arr1[i]), "<code>arr2</code> is correct copy of <code>arr1</code>.");'
  - text: ''
    testString: 'getUserInput => assert(getUserInput("index").match(/\[\s*...arr1\s*\]/g),"<code>...</code> spread operator was used to duplicate <code>arr1</code>.");'
  - text: ''
    testString: 'assert((arr1, arr2) => {arr1.push("JUN"); return arr2.length < arr1.length},"<code>arr2</code> remains unchanged when <code>arr1</code> is changed.");'

Challenge Seed

const arr1 = ['JAN', 'FEB', 'MAR', 'APR', 'MAY'];
let arr2;
(function() {
  "use strict";
  arr2 = []; // change this line
})();
console.log(arr2);

Solution

// solution required