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Mutate array by copy
When working with arrays in JavaScript, it’s essential to understand the distinction between mutating an array in place and creating a new array by copying its elements. Let’s explore both approaches: Mutating the Original Array (In-Place) When you want to modify the original array directly, you can use methods that mutate the array without creating a new one. Examples of such methods include: Array#push() : Adds elements to the end of the array. Array#pop() : Removes the last element from the array. Array#splice() : Adds or removes elements at a specific position. Array#sort() : Sorts the array in place. Array#reverse() : Reverses the order of elements. These methods alter the original array, so use them carefully. Creating a New Array by Copying Elements Sometimes you need to create a new array based on the existing one without modifying the original. Common methods for creating a new array include: Array#map() : Creates a new array by applying a function to each element. Array...
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