Programming

17380 readers

345 users here now

Welcome to the main community in programming.dev! Feel free to post anything relating to programming here!

Cross posting is strongly encouraged in the instance. If you feel your post or another person's post makes sense in another community cross post into it.

Hope you enjoy the instance!

Rules

Follow the programming.dev instance rules
Keep content related to programming in some way
If you're posting long videos try to add in some form of tldr for those who don't want to watch videos

Wormhole

Follow the wormhole through a path of communities [email protected]

founded 1 year ago

MODERATORS

snowe

Ategon

[email protected]

What's stopping WebAssembly from effectively replacing JavaScript? (self.programming)

submitted 1 year ago by popcar2 to c/programming

54 comments fedilink hide all child comments

I've been wondering about this for a while and haven't really found a great answer for it. From what I understand, WASM is:

Faster than JavaScript
Has a smaller file size
Can be compiled to from pretty much any programming language
Can be used outside of the browser easier thanks to WASI

So why aren't most websites starting to try replacing (most) JS with WASM now that it's supported by every major browser? The most compelling argument I heard is that WASM can't manipulate the DOM and a lot of people don't want to deal with gluing JS code to it, but aside from that, is there something I'm missing?

you are viewing a single comment's thread
view the rest of the comments

[+] [email protected] -7 points 1 year ago (3 children)

Even if WASM gets some amazing feature, like super-fast DOM manipulation, it would still be used via API from JavaScript. WASM is a subset of JavaScript that mainly consists of low level operations. It's not exactly nice for writing code. It's like assembler in this respect — very fast, very efficient, but we still tend to prefer a higher level language.

[–] [email protected] 9 points 1 year ago (1 children)

How is WebAssembly a subset of JavaScript? Aren't you confusing it with asm.js?

[–] [email protected] 2 points 1 year ago

He meant it as "wasm will be invoked by javascript" and not the other way around.

[–] [email protected] 6 points 1 year ago

Ok but no one is talking about hand writing wasm. You write wasm with a language, such as rust, which already has great web frameworks such as yew (which replaces react) as well as leptos (which replaces solid.js). Leptos is already faster than react vue and svelte

[–] coltorl 3 points 1 year ago* (last edited 1 year ago)

I don’t know what you mean by WASM being a subset of javascript (maybe you mean AssemblyScript?) You can still program in higher level languages like C and have it compile into WASM as one would compile C to assembly.