mirror of
https://github.com/fluencelabs/wasm-bindgen
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21 lines
670 B
Markdown
21 lines
670 B
Markdown
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# `js_class = "Blah"`
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The `js_class` attribute can be used in conjunction with the `method` attribute
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to bind methods of imported JavaScript classes that have been renamed on the
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Rust side.
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```rust
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#[wasm_bindgen]
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extern {
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// We don't want to import JS strings as `String`, since Rust already has a
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// `String` type in its prelude, so rename it as `JsString`.
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#[wasm_bindgen(js_name = String)]
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type JsString;
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// This is a method on the JavaScript "String" class, so specify that with
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// the `js_class` attribute.
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#[wasm_bindgen(method, js_class = "String", js_name = charAt)]
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fn char_at(this: &JsString, index: u32) -> JsString;
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}
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```
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