added JSX formatting to JavaScript

[lukkea]

Description

This comment by @hbergren prompted me to pull this repo into syntax-highlighting. With a couple of tweeks it's working. I have added a "JSX" option to the menu. I also wondered if there should also be a "React" option that does the same as this, but that seemed unnecessary to me so I didn't do that.

I didn't follow the contributing guidelines in my previous pull request and just realised I hadn't created a dedicated branch to hold the changes (I just used a repo I wasn't going to use for anything else).

I have now done it as Glutanimate requested.

Checklist:

Please replace the space inside the brackets with an x and fill out the ellipses if the following items apply:

• [x] I've read and understood the contribution guidelines
• [x] I've tested my changes against at least one of the following Anki builds:
  • [x] Latest standard Anki 2.1 binary build [required for Anki-compatible 2.1 add-ons]
  • [] Latest alternative Anki 2.1 binary build
  • [ ] Latest Anki 2.0 binary build [required for Anki 2.0-compatible add-ons]
• [x] I've tested my changes on at least one of the following platforms:
  • [ ] Linux, version:
  • [x] Windows, version:
  • [ ] macOS, version:
• [ ] My changes potentially affect non-desktop platforms, of which I've tested:
  • [ ] AnkiMobile, version:
  • [ ] AnkiDroid, version:
  • [ ] AnkiWeb

[Digital-Coder]

it is unfortunate that they didnt merge this pull request and I was lucky to find it here because I really need JSX support. Thanks a lot @lukkea !

[danielvelara]

Hi @lukkea, is there a way we could also create a PR for adding TSX support?

[lukkea]

Hi @lukkea, is there a way we could also create a PR for adding TSX support?

Yes - tsx could be added the list, but this PR is around eighteen months old and, along with a couple of others I did in @glutanimate's repos, it doesn't appear to have been seen by any maintainers so I expect it might not be the best way you could spend an hour or so...