Artem Rudenko

Hi Erica, thank you for your reply

Yes, I refer to Messaging, as we want to start using it, instead of the Classic version.

So for example, in our approach, we want to hide the messaging icon, we will show it when user clicks a special button on our website. After user sends a message, he can close the chat, and messaging icon will disappear again, so we want to track the reply from support, so this icon will appear after user receives a message.

Hope it gives more sense now, and the question is there any way how to handle it? 

Thanks in advance 

In the Classic version of zendesk Live Chat you have API method zE('webWidget:on', 'chat:unreadMessages', function(number) {}); which gives possibility to react on receiving new messages. 
We want to switch to a new Live Chat and some of these methods are really needed for us. I am trying to achieve the same behavior with our own hooks, but it is really hard to track appearing iframes as they have only titles as identifiers, which can be translated depending on user locale. 
So my question is, is it possible to add some sort of ids to iframes?

Or there are any other workarounds how to achieve the same behavior as classic chat has?