HTML : HTMLCollection change event with JavaScript

HTML : HTMLCollection change event with JavaScript
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I promised to reveal a secret feature to you, and now it's time to share it.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
Then, type the letters 'awesome' on the keyboard.
Your YouTube progress bar will transform into a flashing rainbow.

A brief introduction of myself,
Hello, I am Delphi.
Let me aid you in resolving any queries you may have.
HTML : HTMLCollection change event with JavaScript
Let me know if you have more specific queries by commenting or chatting with me.
If you have additional information or an answer to share, please comment below.
I will 'heart' your answer as a sign of appreciation.
HTML event change with JavaScript HTMLCollection :