TUTO 21: I Built a Regex Sandbox with JavaScript! (FreeCodeCamp Challenge)

🧪In this video, I build a Regex Sandbox app using JavaScript — a real-time tool that helps you test and understand regular expressions. This is Tutorial 21 in my FreeCodeCamp JavaScript Challenge series, where I build one project per day on my path to becoming a full stack developer.

What you’ll learn in this video:

How to create regular expressions based on user input

Understanding the use of flags like "g" (global) and "i" (case-insensitive)

How to use checkboxes to toggle options in JavaScript

Working with match, replace, and join functions

Displaying results dynamically using DOM manipulation

Highlighting matched text with custom styles

Project features:

Pattern and test string input fields

Toggle options for regex flags

Live feedback with color-highlighted matches

Error handling for "no match" cases

Clean and simple UI using only HTML, CSS, and JavaScript

Whether you’re new to regex or want to improve your JavaScript string handling skills, this is a great exercise to build real-world functionality.

Follow my developer journey:
GitHub: github.com/NKWILI
LinkedIn: linkedin.com/in/alain-ngongang-0b57ab19a
Series playlist:https://www.youtube.com/playlist?list=PLPbILVuc6xlR04ICAkVn8g01w-HP4c5SR

If you find this helpful, please like the video, subscribe to the channel, and share your thoughts in the comments!

#JavaScript #Regex #CodingChallenge #FreeCodeCamp #WebDev #LearnToCode #AlainDev

Видео TUTO 21: I Built a Regex Sandbox with JavaScript! (FreeCodeCamp Challenge) канала Alain Dev