| # Working with the `char` type |
| |
| [View full source code][code] or [view the compiled example online][online] |
| |
| [online]: https://rustwasm.github.io/wasm-bindgen/exbuild/char/ |
| [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/char |
| |
| The `#[wasm_bindgen]` macro will convert the rust `char` type to a single |
| code-point js `string`, and this example shows how to work with this. |
| |
| Opening this example should display a single counter with a random character |
| for it's `key` and 0 for its `count`. You can click the `+` button to increase a |
| counter's count. By clicking on the "add counter" button you should see a new |
| counter added to the list with a different random character for it's `key`. |
| |
| Under the hood javascript is choosing a random character from an Array of |
| characters and passing that to the rust Counter struct's constructor so the |
| character you are seeing on the page has made the full round trip from js to |
| rust and back to js. |
| |
| ## `src/lib.rs` |
| |
| ```rust |
| {{#include ../../../examples/char/src/lib.rs}} |
| ``` |
| |
| ## `index.js` |
| |
| ```js |
| {{#include ../../../examples/char/index.js}} |
| ``` |
