is WebAssembly JavaScript

No, WebAssembly (Wasm) is not JavaScript. While both run in web browsers, they are fundamentally different technologies designed to work together. Key Differences Format: JavaScript is a high-level, human-readable text language. WebAssembly is a low-level binary format (bytecode) designed for machines to execute quickly. Performance: WebAssembly offers near-native execution speed, making it ideal for heavy tasks like video editing, 3D games, and complex math. JavaScript is generally slower for these intensive computations due to its dynamic nature. Authoring: You write JavaScript directly. You typically don't write WebAssembly by hand; instead, you compile code from other languages like C++, Rust, or C# into it. System Access: JavaScript has direct access to the DOM (the webpage structure). WebAssembly cannot touch the DOM directly and must communicate through JavaScript to update the screen. How They Work Together WebAssembly is intended to complement, not replace, JavaScript. Hybrid Apps: Modern apps often use JavaScript for the user interface and WebAssembly for performance-critical logic. JavaScript API: You use the WebAssembly JavaScript API to load and run Wasm modules within a standard JavaScript application. AssemblyScript: For developers who prefer a JavaScript-like experience, AssemblyScript allows you to write code using a variant of TypeScript that compiles directly to WebAssembly.