促进 WASM 模块和 JavaScript 之间的高级交互
wasm-bindgen-cliYou can install it using cargo install:
cargo install wasm-bindgen-cli
Or, you can download it from the release page.
If you have cargo-binstall installed,
then you can install the pre-built artifacts by running:
cargo binstall wasm-bindgen-cli
Import JavaScript things into Rust and export Rust things to JavaScript.
use wasm_bindgen::prelude::*;
// Import the `window.alert` function from the Web.
#[wasm_bindgen]
extern "C" {
fn alert(s: &str);
}
// Export a `greet` function from Rust to JavaScript, that alerts a
// hello message.
#[wasm_bindgen]
pub fn greet(name: &str) {
alert(&format!("Hello, {}!", name));
}
Use exported Rust things from JavaScript with ECMAScript modules!
import { greet } from "./hello_world";
greet("World!");
Lightweight. Only pay for what you use. wasm-bindgen only generates
bindings and glue for the JavaScript imports you actually use and Rust
functionality that you export. For example, importing and using the
document.querySelector method doesn't cause Node.prototype.appendChild or
window.alert to be included in the bindings as well.
ECMAScript modules. Just import WebAssembly modules the same way you would import JavaScript modules. Future compatible with WebAssembly modules and ECMAScript modules integration.
Designed with the "Web IDL bindings" proposal in mind. Eventually, there won't be any JavaScript shims between Rust-generated wasm functions and native DOM methods. Because the Wasm functions are statically type checked, some of those native methods' dynamic type checks should become unnecessary, promising to unlock even-faster-than-JavaScript DOM access.
** Read the wasm-bindgen guide here! **
The project aims to maintain a 2-year MSRV policy for libraries (meaning we support Rust versions released within the last 2 years), but with a shorter MSRV policy for the CLI. Changes to the MSRV may be made in patch versions, and will be logged in the CHANGELOG and MSRV history below.
| Version | Library MSRV | CLI MSRV | Date |
|---|---|---|---|
| 0.2.118 | 1.77 | 1.86 | 2026-04-10 |
| 0.2.106 | 1.71 | 1.82 | 2025-11-27 |
| 0.2.103 | 1.57 | 1.82 | 2025-09-17 |
| 0.2.93 | 1.57 | 1.76 | 2024-08-13 |
This project is licensed under either of
at your option.
See the "Contributing" section of the guide for information on hacking on wasm-bindgen!
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this project by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.
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