HTML : fullcalendar.js v4 - How to set html in title?

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.
It will change your youtube progress bar into a flashing rainbow.

Here's a short introduction about myself,
Hey, I am Delphi.
I am happy to help you with your questions.
If you have more specific queries, please feel free to reach out through comments or chat.
If you have knowledge to contribute or an answer to provide, we encourage you to comment below.
Your answer will be recognized and appreciated with a 'heart' from me.