highlight.js on CDN
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highlight.js is a popular library for syntax highlighting. I just figured out how to use its CDN version.
According to the download instructions, there is a hosted version of highlight.js. It is a prebuilt version with 23 commonly used languages. I was trying to highlight Vim script, which was not included. After searching on the Internet, I found it on cdnjs. Every supporting language was listed, so I downloaded the one for Vim script (languages/vim.min.js) immediately and started testing. It was not working because “hljs” was not defined.
It took me a while to realize the structure of those js files. The one I downloaded for Vim script was merely an addon. In other words, I still needed the file highlight.min.js as a base. After referencing both of them, Vim script highlighting finally worked.