47 строки
1,2 КиБ
ReStructuredText
47 строки
1,2 КиБ
ReStructuredText
.. _webassembly:
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WebAssembly
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===========
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.. highlight:: go
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You can call a JavaScript function from Go and call a Go function from WebAssembly::
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package main
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// This calls a JS function from Go.
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func main() {
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println("adding two numbers:", add(2, 3)) // expecting 5
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}
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// This function is imported from JavaScript, as it doesn't define a body.
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// You should define a function named 'main.add' in the WebAssembly 'env'
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// module from JavaScript.
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func add(x, y int)
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// This function is exported to JavaScript, so can be called using
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// exports.add() in JavaScript.
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//go:export multiply
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func multiply(x, y int) int {
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return x * y;
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}
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.. highlight:: javascript
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Related JavaScript would look something like this::
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// Providing the environment object, used in WebAssembly.instantiateStreaming.
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env: {
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'main.add': function(x, y) {
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return x + y
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}
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// ... other functions
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}
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// Calling the multiply function:
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console.log('multiplied two numbers:', wasm.exports.multiply(5, 3));
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A more complete example is provided in the `wasm example
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<https://github.com/aykevl/tinygo/tree/master/src/examples/wasm>`_.
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