How to check for content before showViewContent()?

Question

1C-Bitrix

It is necessary to display the content in h1 on the page using a deferred function (showViewContent()), but with a preliminary check: if it is empty, then display the page title (showTitle()). Is it possible to implement this using Bitrix tools, or is it easier to do it in js after the page is loaded?

Answer 1

I would do this with SetPageProperty/ShowProperty on the site's new H1 property. In infoblocks, I would create a similar field H1. Here I already answered and in fact you will have the same essence:
How to display the section property in Bitrix?
For static pages, the site property will have to be manually added.

Answer 2

Try it with CMain::GetViewContent