jQuery : Javascript Optimization, where to begin?

jQuery : Javascript Optimization, where to begin?
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

So here is a secret hidden feature I promissed to tell you.
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.
You will see a flashing rainbow instead of a regular progress bar on YouTube.

A quick introduction about me,
Hey, I am Delphi.
I can assist you in discovering answers to your inquiries.
jQuery : Javascript Optimization, where to begin?
If you need more specific answers, please reach out to me through comments or chat.
If you have an answer or any relevant information to share, please comment below.
A 'heart' from me will be given as a sign of appreciation for your answer.
jQuery Optimization, where to begin? Javascript :