freeCodeCamp/curriculum/challenges/arabic/02-javascript-algorithms-and-data-structures/functional-programming/remove-elements-from-an-array-using-slice-instead-of-splice.arabic.md

id	title	challengeType	videoUrl	localeTitle
9d7123c8c441eeafaeb5bdef	Remove Elements from an Array Using slice Instead of splice	1

Description

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Instructions

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Tests

tests:
  - text: ''
    testString: 'assert(code.match(/\.slice/g), "Your code should use the <code>slice</code> method.");'
  - text: ''
    testString: 'assert(!code.match(/\.splice/g), "Your code should not use the <code>splice</code> method.");'
  - text: ''
    testString: 'assert(JSON.stringify(inputCities) === JSON.stringify(["Chicago", "Delhi", "Islamabad", "London", "Berlin"]), "The <code>inputCities</code> array should not change.");'
  - text: ''
    testString: 'assert(JSON.stringify(nonMutatingSplice(["Chicago", "Delhi", "Islamabad", "London", "Berlin"])) === JSON.stringify(["Chicago", "Delhi", "Islamabad"]), "<code>nonMutatingSplice(["Chicago", "Delhi", "Islamabad", "London", "Berlin"])</code> should return <code>["Chicago", "Delhi", "Islamabad"]</code>.");'

Challenge Seed

function nonMutatingSplice(cities) {
  // Add your code below this line
  return cities.splice(3);

  // Add your code above this line
}
var inputCities = ["Chicago", "Delhi", "Islamabad", "London", "Berlin"];
nonMutatingSplice(inputCities);

Solution

// solution required