Edits for JavaScript 2021 chapter

[shantsis]

Progress on #2525
Closes #2141

Stage link: https://20211130t141809-dot-webalmanac.uk.r.appspot.com/en/2021/javascript

Basic edits and some TODOs for the author to review

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[rviscomi]

@NishuGoel I've finished my editing pass. I made some substantial edits to the text so please give it a close read and let me know if you disagree with any changes. The staging link has also been updated with the latest version. We'll wait for your LGTM before merging.

Thanks for all of your hard work on this chapter, it came out really good and I'm excited to see it go live tomorrow! 🚀

[github-actions]

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src/static/images/2021/javascript/ajax-apis-per-year.png	56.47 KB	40.51 KB	-28.2%	View diff

1387 images did not require optimisation.

[NishuGoel]

@NishuGoel I've finished my editing pass. I made some substantial edits to the text so please give it a close read and let me know if you disagree with any changes. The staging link has also been updated with the latest version. We'll wait for your LGTM before merging.

read it through, the rephrasing seems fair to me, doesn't change the point that was being conveyed originally. (I just lost the "performance-nerd" phrase after editing, which I really liked :P)
thanks for the thorough reviews and edits/updates @rviscomi. Good to go from my end.

[rviscomi]

spellcheck

[rviscomi]

Let's ship it, thanks so much for an excellent job @NishuGoel! 🚀

[NishuGoel]

Let's ship it, thanks so much for an excellent job @NishuGoel! 🚀

Awesome! 🚀 Thanks @rviscomi