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Comment by TamDenholm | Hacker News Reader

Just curious, does there exist a library that uses jquery syntax but with modern vanilla JS as the guts? i'm sure someone must have done this but i dont know about it. I'm interested to know if you could just replace the jquery cdn link for this and have your old jquery code still work?

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Yes, cash.js[0] does almost that, although it doesn't mirror all of jQuery's methods (like .fadeIn() .fadeOut() for example)

[0] https://github.com/kenwheeler/cash/

Thanks! This is the kind of thing i was interested to find out about.

What do you mean by jQuery syntax? jQuery has a lot of features. If you mean the query selector you can do

    let $ = document.querySelectorAll;

If you mean chaining commands you can use the latest version of jQuery. It uses querySelectorAll under the hood.

Yes i mean exactly that, but implementing as much of the jQuery library as possible, or certainly the most used parts. Was just a thought excercise.

I think maybe that _is_ JQuery.

FYI I believe it is generally considered better to prefer const over let if the value is never going to change. Prevents accidentally reassigning $ here.

True. I quickly threw that out as an example.

Latest jQuery claims to support only recent browsers. I think it means that they are using relatively recent JS API without workaround or hacks if you're concerned about it.

Yes. It's called jQuery.

Zepto is API compatible, my own Umbrella JS (https://umbrellajs.com/) is not 100% compatible but it implements the most common jQuery methods

Or perhaps more succinctly, a JS polyfill library that uses jquery as the guts. I only mean that half jokingly.

The latest versions of jQuery provide a jQuery API implemented on top of current web standards.

I’m unsure about what goes on under the hood, but Zepto uses the jQuery syntax.

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