What is the use of the meta and charset please can someone explain it to me?

Question

About <meta charset="utf-8">

Answer 1

For encoding character we need to use <meta charset="utf-8">.like you what to use special character, number or language. And It's default encoding system for html5. utf-8 encode almost every character.

Answer 2

https://www.w3schools.com/tags/att_meta_charset.asp
Hope this helps!