free-course-en.md updated (#10312)

courses/free-courses-en.md

@@ -881,6 +881,7 @@
 * [Introduction to ES6+](https://scrimba.com/learn/introtoes6) - Dylan C. Israel (Scrimba)
 * [JavaScript Array Methods](https://youtube.com/playlist?list=PLgBH1CvjOA62PBFIDq55-S6Beivje30A2) - Florin Pop
 * [JavaScript Coding Challenges](https://youtube.com/playlist?list=PLgBH1CvjOA63ROz8Wqd7RDD0qpvGXF8x5) - Florin Pop
+* [JavaScript Course](https://www.theodinproject.com/paths/full-stack-javascript/courses/javascript) - The Odin Project
 * [Javascript course](https://www.youtube.com/playlist?list=PLRAV69dS1uWSxUIk5o3vQY2-_VKsOpXLD) - Hitesh Choudhary
 * [Javascript Essentials](https://www.udemy.com/javascript-essentials/) - Lawrence Turton (Udemy)
 * [Javascript Fundamentals](https://www.udemy.com/course/javascriptfundamentals) - Bharath Thippireddy (Udemy)