How Can I Add Elements to the End of a JavaScript Array?

Appending Elements to Arrays in JavaScript

When working with arrays, it's often necessary to add new elements to them. In JavaScript, the Array.prototype.push method provides a simple and efficient way to append values to the end of an array.

Syntax:

arr.push(...item1, item2, ...);

Arguments:

• ...item: One or more values to append to the array.

Example:

Consider the following array:

const arr = ['a', 'b', 'c'];

To append the value 'd' to the end of this array, we can use:

arr.push('d');

The resulting array would now be:

[ 'a', 'b', 'c', 'd' ]

Note: The push method modifies the original array in-place. If you need an immutable copy of the array with the new element appended, you can use the spread operator to create a new array:

const newArr = [...arr, 'd'];

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