Embedding javascript in HTML doesn't seem to render properly

Hi,
I've got a glitch happening when I add an HTML block in EB and write some Javascript into it; it just won't render the actual Javascript per se ? You can see it here https://martialart.zone/theoretical/science/the-science-behind-our-human-relationship-with-violence. Actually, it's not rendering so you have to look in the source code at the 3rd or 4th block (HTML).
Any idea what's wrong ?
Thanks
Danny