What to choose to create a chat?

Question

JavaScript

Good day. I want to write a chat for a website. I don't know how to implement it and with what. I read earlier that the most common solution is development in php. However, I hope that php can be replaced by, for example, node.js. I have basic concepts of html , css ; js I'm starting to learn. Question: what to write a chat on?
Criteria:

• Ease of writing code
  
• Its load on the system
  
• How easy it is to write in a particular language
  

Answer 1

Look towards socket.io, there are a lot of tutorials for it, how to write a chat using node and JS.

Answer 2

If you use the php + CppComet bundle, then writing a chat will be very simple. Here is an example of a chat
https://github.com/CppComet/php-chat-example and here is another https://comet-server.com/wiki/doku.php/comet:chat-...