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WebAssembly Concepts

This article explains the concepts behind how WebAssembly works including its goals, the problems it solves, and how it runs inside the web browser’s rendering engine.

What is WebAssembly?

WebAssembly is a new type of code that can be run in modern web browsers and provides new features and major gains in performance. It is not primarily intended to be written by hand, rather it is designed to be an effective compilation target for low-level source languages like C, C++, Rust, etc.

This has huge implications for the web platform — it provides a way to run code written in multiple languages on the web at near-native speed, with client apps running on the web that previously couldn’t have done so.

What’s more, you don’t even have to know how to create WebAssembly code to take advantage of it. WebAssembly modules can be imported into a web (or Node.js) app, exposing WebAssembly functions for


 

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