Different lessons taught in the Youtube Tutorial are organized in separate files. For example, question-1 source code is shared in question-1.js file. Just copy the code from any file and paste into script.js file. Then simply run the index.html file with VS Code Live Server Plugin. You will see the output in the browser console.
Sumit Saha - sumit@learnwithsumit.com
Project Link: https://github.com/learnwithsumit/jspt-3
Youtube Video Link: https://lwsbd.link/jspt3
Youtube Channel: https://youtube.com/LearnwithSumit