JavaScript, how to find a character in a string
How do you find a character in a string, using JavaScript?
How do you find a character in a string, using JavaScript?
You have one easy way.
Every string has an includes() method that accepts one (or more) characters.
This method returns true if the string contains the character, and false if not:
'a nice string'.includes('a') //true
'a nice string'.includes('b') //false
If you need to find the exact position of the letter in the string, however, you need to use the indexOf() method:
'a nice string'.indexOf('a') //0
'a nice string'.indexOf('c') //4
If there are more than one occurrence, this method returns the position of the first one it finds, starting from the left.
→ I wrote 17 books to help you become a better developer:
- C Handbook
- Command Line Handbook
- CSS Handbook
- Express Handbook
- Git Cheat Sheet
- Go Handbook
- HTML Handbook
- JS Handbook
- Laravel Handbook
- Next.js Handbook
- Node.js Handbook
- PHP Handbook
- Python Handbook
- React Handbook
- SQL Handbook
- Svelte Handbook
- Swift Handbook
Also, JOIN MY CODING BOOTCAMP, an amazing cohort course that will be a huge step up in your coding career - covering React, Next.js - next edition February 2025