freeCodeCamp/guide/english/certifications/javascript-algorithms-and-data-structures/functional-programming/remove-elements-from-an-array-using-slice-instead-of-splice/index.md

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Remove Elements from an Array Using slice Instead of splice

Remove Elements from an Array Using slice Instead of splice

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Problem Explanation

• The difference between splice and slice method is that the slice method does not mutate the original array, but returns a new one.
• The slice method takes 2 two arguments for the indices to begin and end the slice (the end is non-inclusive).
• If you do not want to mutate the original array, you can use the slice method.

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Solutions

Solution 1 (Click to Show/Hide)

function nonMutatingSplice(cities) {
  // Add your code below this line

  return cities.slice(0, 3);

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