# 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
```
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 `
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