Go-app is a package for building progressive web apps (PWA) with the Go programming language (Golang) and WebAssembly (Wasm).
Shaping a UI is done by using a declarative syntax that creates and compose HTML elements only by using the Go programing language.
It uses Go HTTP standard model.
An app created with go-app can out of the box runs in its own window, supports offline mode, and is SEO friendly.
go-app requirements:
go mod init
go get -u github.com/maxence-charriere/go-app/v10/pkg/appGo-app uses a declarative syntax so you can write reusable component-based UI elements just by using the Go programming language.
Here is a Hello World component that takes an input and displays its value in its title:
type hello struct {
app.Compo
name string
}
func (h *hello) Render() app.UI {
return app.Div().Body(
app.H1().Body(
app.Text("Hello, "),
app.If(h.name != "", func() app.UI {
return app.Text(h.name)
}).Else(func() app.UI {
return app.Text("World!")
}),
),
app.P().Body(
app.Input().
Type("text").
Value(h.name).
Placeholder("What is your name?").
AutoFocus(true).
OnChange(h.ValueTo(&h.name)),
),
)
}Apps created with go-app complies with Go standard HTTP package interfaces.
func main() {
// Components routing:
app.Route("/", func() app.Composer { return &hello{} })
app.Route("/hello", func() app.Composer { return &hello{} })
app.RunWhenOnBrowser()
// HTTP routing:
http.Handle("/", &app.Handler{
Name: "Hello",
Description: "An Hello World! example",
})
if err := http.ListenAndServe(":8000", nil); err != nil {
log.Fatal(err)
}
}Read the Getting Started document.
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