diff --git a/more/free-programming-interactive-tutorials-en.md b/more/free-programming-interactive-tutorials-en.md
index 567af45cf..083de2282 100644
--- a/more/free-programming-interactive-tutorials-en.md
+++ b/more/free-programming-interactive-tutorials-en.md
@@ -231,6 +231,7 @@
 * [JavaScript Tutorial](https://www.w3schools.com/js) - W3Schools
 * [JavaScript Tutorial](https://www.scaler.com/topics/javascript/) - Scaler Topics
 * [Javascripting](https://github.com/sethvincent/javascripting)
+* [JSchallenger](https://www.jschallenger.com)
 * [Learn JavaScript](http://www.learn-js.org)
 * [Learn JavaScript](https://learnjavascript.online)
 * [Learn knockout.js](http://learn.knockoutjs.com)