Show JavaScript, JSON or YAML code on page

HI all,

I want to display on my blog some code (not code as in HTML injections for sqarespace) that I want to publish. I would like line numers and formating (color) for JavaScript, JSON,  Yaml, C++ etc.

Any ideas how to do this easy and nice looking?

Thanks

Gist and was the google golden ticket. THANKS

http://curious-engineering.com/home/2020/10/16/explore-code-snippets-in-squarespace-with-github-gists