It's possible. I found this which sounds similar...
Wed Dec 07, 2022 3:32pm

Including HTML with javascript:

Besides the JS script part, the html is just:
<body> <div w3-include-html="h1.html"></div> <div w3-include-html="content.html"></div> <script> includeHTML(); </script> </body> </html>

  • No, I don't. - Puckdropper, Mon Dec 05 2022 5:48am
    I couldn't find anything either and any of my HTML from that time is likely gone. Version control? What's that? I wonder if, based on where it seemed to be, if I was using JS thinking it was HTML?
"Forces act when not restrained" - Puckdropper