HTML : Read Multiple Files With JavaScript and Wait for Result

HTML : Read Multiple Files With JavaScript and Wait for Result
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

As promised, I have a secret feature that I want to reveal to you.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
Then, type the letters 'awesome' on the keyboard.
You will see a flashing rainbow instead of a regular progress bar on YouTube.

An introduction to myself in a few words,
Hello everyone, I'm Delphi.
I am here to assist you in getting the answers you need.
HTML : Read Multiple Files With JavaScript and Wait for Result
If you have specific questions that need answers, please don't hesitate to comment or chat with me.
If you have an answer or any additional information on the answer, please leave a comment below.
Your answer will be recognized and valued, and I will 'heart' it to show my appreciation.
Result With Files Multiple : and HTML JavaScript for Wait Read