WebAssembly vs JavaScript: A Comparison - SitePoint
Briefly

WebAssembly (Wasm) outperforms JavaScript for specific tasks due to its binary format, ideal for performance-intensive processes like data processing and game rendering, while JavaScript's ease of use, flexibility, and extensive ecosystem make it dominant in web development.
WebAssembly supports multiple languages like C, C++, Rust, enhancing portability; JavaScript has universal support and a vast library ecosystem for general web projects.
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