go-app

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A package to build progressive web apps with Go programming language and WebAssembly.

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Repository: maxence-charriere/go-app


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README.md

<h1 align="center">
<a href="https://go-app.dev">
<img alt="go-app" width="150" height="150" src="docs/web/icon.png">
</a>
</h1>

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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.

Documentation (built with go-app)

![go-app documentation](https://go-app.dev)

Install

go-app requirements:

- Go 1.18 or newer
- Go module

sh
go mod init
go get -u github.com/maxence-charriere/go-app/v10/pkg/app

Declarative syntax

Go-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:

go
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)),
),
)
}

Standard HTTP

Apps created with go-app complies with Go standard HTTP package interfaces.

go
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)
}
}

Getting started

Read the Getting Started document.

Built with go-app

- Lofimusic.app
- Murlok.io
- liwasc
- go-app Docs

Contributors

Code Contributors

This project exists thanks to all the people who contribute. [Contribute].

<a href="https://github.com/maxence-charriere/go-app/graphs/contributors"><img src="https://opencollective.com/go-app/contributors.svg?width=890&button=false" /></a>

Financial Contributors

Become a financial contributor and help us sustain go-app development. [Contribute]

#### Individuals

<a href="https://opencollective.com/go-app"><img src="https://opencollective.com/go-app/individuals.svg?width=890"></a>

#### Organizations

Support this project with your organization. Your logo will show up here with a link to your website. [Contribute]

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