Code Terminal Simulation

Hi,
I needed to create a code terminal for the learner to type in the code and get the feeling that it is a real terminal, and also get some kind od an imidiate feedback so they can spot the mistake on the spot. 
I built this with JS, and the code is in the YouTube comment with an explanation, so if you want to change colors and more, you'd know where, even if you are not a JS developer. 
Maybe it will help others too, and if so, enjoy!

https://youtu.be/PWDxqyq4sRo?si=zvonqvBNmobFum3n