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https://github.com/hotwired/stimulus

A modest JavaScript framework for the HTML you already have
https://github.com/hotwired/stimulus

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A modest JavaScript framework for the HTML you already have

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README 

        
# Stimulus Stimulus



### A modest JavaScript framework for the HTML you already have



Stimulus is a JavaScript framework with modest ambitions. It doesn't seek to take over your entire front-end—in fact, it's not concerned with rendering HTML at all. Instead, it's designed to augment your HTML with just enough behavior to make it shine. Stimulus pairs beautifully with [Turbo](https://turbo.hotwired.dev) to provide a complete solution for fast, compelling applications with a minimal amount of effort.



How does it work? Sprinkle your HTML with controller, target, and action attributes:



```html



  



  Greet



  



```



Then write a compatible controller. Stimulus brings it to life automatically:



```js

// hello_controller.js

import { Controller } from "@hotwired/stimulus"



export default class extends Controller {

  static targets = [ "name", "output" ]



  greet() {

    this.outputTarget.textContent =

      `Hello, ${this.nameTarget.value}!`

  }

}

```



Stimulus continuously watches the page, kicking in as soon as attributes appear or disappear. It works with any update to the DOM, regardless of whether it comes from a full page load, a [Turbo](https://turbo.hotwired.dev) page change, or an Ajax request. Stimulus manages the whole lifecycle.



You can write your first controller in five minutes by following along in the [Stimulus Handbook](https://stimulus.hotwired.dev/handbook/introduction).



You can read more about why we created this new framework in [The Origin of Stimulus](https://stimulus.hotwired.dev/handbook/origin).



## Installing Stimulus



You can use Stimulus with any asset packaging systems. And if you prefer no build step at all, just drop a `` tag on the page and get right down to business.



See the [Installation Guide](https://stimulus.hotwired.dev/handbook/installing) for detailed instructions.



## Getting Help



Looking for the docs? Once you've read through the Handbook, consult the [Stimulus Reference](https://stimulus.hotwired.dev/reference/controllers) for API details.



Have a question about Stimulus? Connect with other Stimulus developers on the [Hotwire Discourse](https://discuss.hotwired.dev/) community forum.



## Contributing Back



Find a bug? Head over to our [issue tracker](https://github.com/hotwired/stimulus/issues) and we'll do our best to help. We love pull requests, too!



We expect all Stimulus contributors to abide by the terms of our [Code of Conduct](CODE_OF_CONDUCT.md).



### Development



- Fork the project locally

- `yarn install`

- `yarn start` - to run the local dev server with examples

- `yarn test` - to run the unit tests

- `yarn lint` - to run the linter with ESLint

- `yarn format` - to format changes with Prettier



## Acknowledgments



Stimulus is [MIT-licensed](LICENSE.md) open-source software from [Basecamp](https://basecamp.com/), the creators of [Ruby on Rails](https://rubyonrails.org).



Continuous integration VMs generously provided by [Sauce Labs](https://opensource.saucelabs.com/).



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