HTML : How can i validate the input from a html5 Datalist?

HTML : How can i validate the input from a html5 Datalist?
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I promised to share a hidden feature with you, and here it is.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
Then, type the letters 'awesome' on your keyboard as the next step.
You will see a flashing rainbow instead of a regular progress bar on YouTube.

A quick introduction about me,
Hello, I am Delphi.
Allow me to support you in answering your questions.
HTML : How can i validate the input from a html5 Datalist?
Please don't hesitate to 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.
html5 i input Datalist? How from : can validate the HTML a