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A modest JavaScript framework for the HTML you already have.

Sprinkle your HTML with controller, target, and action attributes:

<!--HTML from anywhere-->
<div data-controller="hello">
<input data-hello-target="name" type="text">

<button data-action="click->hello#greet">

<span data-hello-target="output">

Write a compatible controller and watch Stimulus bring it to life:

// hello_controller.js
import { Controller } from "stimulus"

export default class extends Controller {
static targets = [ "name", "output" ]

greet() {
this.outputTarget.textContent =
`Hello, ${this.nameTarget.value}!`

Current version: 3.2.2 — released August 7th 2023

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 to provide a complete solution for fast, compelling applications with a minimal amount of effort.

Handbook Installation Source