Using cargo-web
Cargo web is a cargo subcommand for building client web apps. It makes building and deploying web applications incredibly easy. It is also the only toolchain that supports Emscripten targets. Read more here.
Install
cargo install cargo-web
Build
cargo web build
Run
cargo web start
Supported Targets
wasm32-unknown-unknown
wasm32-unknown-emscripten
asmjs-unknown-emscripten
note
For *-emscripten
targets, you'll need to install the Emscripten SDK