How to Replace Character at Specific Index in String in JavaScript - Step by Step Examples

How to Replace Character at Specific Index in String in JavaScript ?

Answer

To replace a character at a specific index in a string in JavaScript, you can convert the string to an array, modify the character at the desired index, and then join the array back to a string.

✐ Examples

1 Replace character at specific index in a string

In this example,

We create a string named str.
We convert the string to an array using the split('') method.
We replace the character at index index with the character newChar.
We join the modified array back to a string using the join('') method.
Finally, we log the modified string str.

JavaScript Program

let str = 'Hello World';
let index = 6;
let newChar = 'x';
let strArray = str.split('');
strArray[index] = newChar;
str = strArray.join('');
console.log(str);

Output

Hello xorld

Summary

In this tutorial, we learned How to Replace Character at Specific Index in String in JavaScript language with well detailed examples.

◀ Previous Next ▶

JavaScript Tutorials

JavaScript How-Tos