Is it possible to create a simple web based group chat with JavaScript,html and css

Answer 1

Possible.
https://codelabs.developers.google.com/codelabs/firebase-web/#0

Answer 2

No, you can't. Have to use server script.

Answer 3

@Espoire
Yes, you need that but still not enough. You also need Mysql

Answer 4

@calvin is it possible with JavaScript, html,php and css

Answer 5

Thanks Nithiwat