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2023-07-21 14:48:49 +02:00
# Expose a method
The first thing you will want to do with WebAssembly is expose your methods to Javascript.
This is straightforward using the `#[wasm_bindgen]` procedural macro.
```rust
use wasm_bindgen::prelude::*;
#[wasm_bindgen]
pub fn set_panic_hook() {
// Generates better error messages if our code ever panics.
//
// For more details see
// https://github.com/rustwasm/console_error_panic_hook#readme
console_error_panic_hook::set_once();
}
// Exposes the `add` method from the previous slide
#[wasm_bindgen]
pub fn add(a: i32, b: i32) -> i32 {
a + b
}
```