Section Summary - KodeKloud

In this section, we’ll explore the fundamentals of WebAssembly and its practical applications:

WebAssembly Binary Format (WASM)
Human-readable Text Format (WAT)
WebAssembly System Interface (WASI)

You’ll build a simple “Hello World” module in C, C++, or Rust, compile it to WASM, and embed it in a web page using the WebAssembly JavaScript API. Hands-on labs will guide you through environment setup, compilation, and execution in both browser and WASI runtimes.

Key Topics

Topic	Description	Reference
WebAssembly Binary Format	Compact bytecode optimized for performance	WASM Spec
Text Format (WAT)	Readable s-expression syntax that assembles into WASM binary	MDN WAT Guide
WebAssembly System Interface	POSIX-like APIs for file I/O and networking in WASI environments	WASI Docs
Module Creation & Execution	Compiling from Rust/C/C++ to WASM and running modules locally	wasm-bindgen
JavaScript Integration	Loading and calling WASM functions via the WebAssembly JS API	MDN WebAssembly API

Make sure you have:

Node.js (v14 or later)
Rust/C/C++ toolchain with WebAssembly targets
A modern browser supporting WASM

By the end of this lesson, you will be able to:

Differentiate between WASM binary and text formats
Compile and run WebAssembly modules locally and in the browser
Leverage WASI for system-level interactions
Embed and interact with WebAssembly modules from JavaScript

The image lists objectives related to WebAssembly, including working with its formats, creating and running modules, and gaining practical experience through hands-on demos.

Useful Resources

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