Chat function only

Hello, support team.
I have installed jitsi on ubuntu 18.04.
and conference works well. I embed conference function by using iframe on web app server(this is also ubuntu vps.)
What I need now is split chatting function of jitsi for only chat service on my web application.
How to implement it? Is there a way for implement this? Maybe iframe api or something else?

We don’t currently have that. Since the chat is standard XMPP, you could use a JS XMPP client such as converse.js.