A nice demo article
The table of contents element only adds links if a headline has an id attribute. Fortunately, we can simply assign ids dynamically by using a bit of JavaScript.
How was this created?
Check the source to find out!
Even nicer with links to headlines 😊
This h4 is an important announcement
We want this headline in the TOC for testing purposes to see that headlines do not need to be ordered from h1-h4, but can come in unexpected ways.
This h4 is for a sponsored message
This should be excluded from the TOC generator I suppose