Modify Array Elements in JavaScript

To modify the value of an array element, you can specify its index in brackets and use the assignment operator as follows:

array[index] = new_value;

Example

📚 Definition: The Bubble Sort algorithm is a simple sorting algorithm which consists in repeatedly comparing and swapping adjacent elements if they are in the wrong order, effectively "bubbling" the largest unsorted element to its correct position in each pass until the entire list is sorted.

For example, here is the list of transformations the algorithm would perform in order to sort the array containing [3, 2, 1]:

[3, 2, 1] => [2, 3, 1] => [2, 1, 3] => [1, 2, 3]

Note: In programming, variable swapping is usually done through a third temporary variable:

let a = 1;let b = 3;let tmp;tmp = a;   // Store the value of `a`.a = b;     // Override the value of `a` with the value of `b`.b = tmp;   // Override the value of `b` with the value of `tmp`.