How to use swapping without extra array In Javascript
To move an array element without an extra array, use array destructuring and swapping. Specify the indices to swap, and swap their values directly using destructuring assignment. This efficiently rearranges the array elements without creating a new array.
Example: In this example we swaps the elements at indexFrom and indexTo in the array using destructuring assignment, effectively moving the element at index 2 to index 1, then logs the modified array to the console.
const array = [1, 2, 3, 4, 5];
const indexFrom = 2; // Index of element to move
const indexTo = 1; // New index for the element
[array[indexFrom], array[indexTo]] = [array[indexTo], array[indexFrom]];
console.log(array);
Output
[ 1, 3, 2, 4, 5 ]
How to move an array element from one array position to another in JavaScript?
In JavaScript, we can access an array element as in other programming languages like C, C++, Java, etc. Also, there is a method called splice() in JavaScript, by which an array can be removed or replaced by another element for an index. So to move an array element from one array position to another we can splice() method or we can simply use array indexing ([]).
These are the following ways to solve this problem:
Table of Content
- Using for loop
- Using splice() function
- Using slice(), concat(), and spread operator
- Using swapping without extra array