A simple demo of compiling Rust code into wasm, and loading wasm in web page.

• rustc: 1.73.0
• target: wasm32-unknown-unknown

• Install rust from here: https://www.rust-lang.org/tools/install
• Install wasm32-unknown-unknown target with: rustup target add wasm32-unknown-unknown
• Compile rust code with: cargo build --target wasm32-unknown-unknown --release. A wasm file named wasm_rust_demo.wasm will be created under ./target/wasm32-unknown-unknown/release/ directory.
• Move wasm_rust_demo.wasm to root directory of this project.
• Host index.html page with any server that you like.
• In the browser console, try the function loaded from wasm file.

• WebAssembly is not yet integrated with <script type='module'> or import statements, thus there is not a path to have the browser fetch modules for you using imports. Link
• WebAssembly has no direct access to the DOM apis. To access any Web API, WebAssembly needs to call out to JavaScript API, which then makes the Web API call. Link

• A proposal is made to support WebAssembly get direct access to Web APIs. Link

• https://depth-first.com/articles/2020/06/29/compiling-rust-to-webassembly-a-simple-example/
• https://github.com/lordpoint/wasm-demo