如何使用GopherJS生产的JavaScript包中的函数？

I have written a simple package in Go and I have compiled with gopherJS .

I have then included it my HTML via

<script src="./testgopher.js">

It has been loaded and all is well. But I am not sure how I can reuse a go function that has been declared in one of packages inside my own javascript.

What I want to do is in another script tag

<script> testpkg.Testfunc() </script>

where the testpkg and Testfunc have been written in go.

I tried to look into the window object and it doesnt look like the function has been added to window.

First you have to register your function if you want to call it from JavaScript. For that you may use the js.Global variable.

Let's see a simple Go function called Hello() which writes the "Hello World!" text into the main document:

import "github.com/gopherjs/gopherjs/js"

func Hello() {
    js.Global.Get("document").Call("write", "Hello World!")
}

Then in your Go main() function you can register it like this:

func main() {
    js.Global.Set("Hello", Hello)
}

After this registration, the "Hello" identifier will be available to you in JavaScript. Since we registered a Go function value (Hello) to this identifier, it will also be a function in JavaScript which you can simply call like this:

<script>
    Hello();
</script>