JavaScript : Javascript Thousand Separator / string format

JavaScript : Javascript Thousand Separator / string format
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.
Next, enter the letters 'awesome' on your keyboard.
The progress bar on YouTube will be altered to a flashing rainbow.

An introduction to myself in a few words,
Hi, my name is Delphi, nice to meet you.
I can provide you with assistance to help you answer your questions.
JavaScript : Javascript Thousand Separator / string format
I am available to answer your more detailed queries via comments or chat.
We encourage you to leave a comment below if you have an answer or insights on the answer.
A 'heart' from me will be given as a sign of appreciation for your answer.
Separator JavaScript string format Thousand Javascript : /