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Comment by fabiospampinato | Hacker News Reader

For some basic use cases that's probably good enough, but saying that that can replace jQuery is like saying that farts can replace rocket engines.

For example I can do the following with jQuery:

    $(document).on ( 'click.ns', '.button', callback );

How should one do the same with vanilla JS? You'd end up rewriting a (probably buggy) reimplementation of jQuery's $.fn.on method in the end.

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With the code here https://news.ycombinator.com/item?id=29979680 it would be on("click", ".button", callback). It doesn't take much to replace most uses of jQuery.

Except that's broken beyond belief. Neither event delegation nor event namespacing are implemented in that snippet.

Weird definition of broken: not having features nobody asked for.

Hello, I explicitly asked for it:

> How should one do the same with vanilla JS?

And you said:

> With the code here

I used jQuery back in the day and I never used namespaces, so I had no idea what ns.click meant. I don't really see why it's a desirable feature now. It just seems like a weird artifact of the fact that jQuery predates CustomEvents. I mean, I guess if there were no CustomEvents, it would be useful, but they exist now, so just use them.

For the record the code you linked to doesn't implement event delegation either, which is something pretty useful that even more modern libraries like React use under the hood.

Here's [0] an article about the usefulness of namespaces, it has use cases beyond custom events, which have been implemented a real long time ago.

[0]: https://css-tricks.com/namespaced-events-jquery/

You use this library: https://www.npmjs.com/package/delegated-events

It doesn't support event namespacing.

I haven’t used namespacing in years. The point people are trying to make is that if you do need “advanced jQuery features” maybe you shouldn’t use jQuery. And the basics are also covered by native API, so the same conclusion applies.

I would not start a new project with jQuery nowadays just for that stuff.

The fact that $(s).remove() never throws for example wouldn’t be ok for me anymore, so I’m looking at more cons than pros.

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