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A collection of composable behaviors for your Stimulus Controllers

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A collection of composable behaviors for your Stimulus Controllers

npm version minified + gzip size types included license Sauce test status


Stimulus Use Example


  • New lifecycle behaviors: adds new standard behaviors to your Stimulus controllers.
  • Composable: compose at will different behaviors in a single controller with mixins.
  • Modular: built as ES6 modules, just import what you need and tree shaking will remove the rest.
  • Typescript: Types available, better autocompletion.
  • Tiny: 3k gzip + tree shaking 🌳🌳🌳

Getting Started

Stimulus 3

If you want to use stimulus-use with Stimulus 3 you can use the version 0.50.0+. This and all future versions are designed to work with the @hotwired/stimulus npm package.

Note: If other packages still depend on the stimulus npm package you can safely keep that in your package.json, this won't break the stimulus-use compability.

Using npm

npm i stimulus-use @hotwired/stimulus

Using yarn

yarn add stimulus-use @hotwired/stimulus

Stimulus 2 and below

If you want to use stimulus-use with Stimulus 2 (or below) you can use version 0.41.0. This version is designed to work with the stimulus npm package.

Using npm

Using yarn

Documentation

We got you covered πŸ‘‰ stimulus-use.github.io/stimulus-use

Mixins

Observers

This set of mixins is built around the Observer APIs and custom events to enhance your controllers with new behaviors.

Mixin Description NEW Callbacks
useClickOutside Tracks the clicks outside of the element and adds a new lifecycle callback clickOutside. clickOutside
useHotkeys Registers hotkeys using the hotkeys-js library and binds them to handler methods
useHover Tracks the user's mouse movements over an element and adds mouseEnter and mouseLeave callbacks to your controller. mouseEnter mouseLeave
useIdle Tracks if the user is idle on your page and adds away and back callbacks to your controller. away
back
useIntersection Tracks the element's intersection and adds appear, disappear callbacks to your controller. appear
disappear
useMatchMedia Tracks if the window matches a media query string. is[Name], not[Name] and [name]Changed
useMutation Tracks mutations on an element, its attributes and/or subtree. Adds a mutate callback to your controller. mutate
useResize Tracks the element's size and adds a new lifecycle callback resize. resize
useTargetMutation Tracks when targets are added or removed from the controller's scope, or their contents changed. Adds [target]TargetAdded , [target]TargetRemoved and [target]TargetChanged callback to your controller for each specified target. [target]TargetAdded [target]TargetRemoved [target]TargetChanged
useVisibility
Tracks the page visibility and adds visible, invisible callbacks to your controller. visible
invisible
useWindowFocus
Tracks the window focus and adds focus, unfocus callbacks to your controller. focus
unfocus
useWindowResize Tracks the size of the window object and adds a new lifecycle callback windowResize. windowResize

Optimization

A set of mixin to optimize performances.

Mixin Description
useDebounce Adds the ability to specify an array "debounces" of functions to debounce.
useMemo Memoize expensive getters by mixing in useMemo and adding a static memos array.
useThrottle Adds the ability to specify an array "throttles" of functions to throttle.

Animation

A set of mixin and controllers to build animations.

Mixin Description
useTransition Mixin or controller to apply classes to various stages of an element's transition.

Application

Mixin Description
useApplication, ApplicationController supercharged controller for your application.
useDispatch Adds a dispatch helper function to emit custom events. Useful to communicate between different controllers.
useMeta Adds getters to easily access meta values.

Extend or compose

Stimulus-use can be used in two ways: composing with mixins or extending built-in controllers

Composing with mixins

This is the prefered approach as it bring the most flexibility. Simply import a mixin and apply it in the connect or initialize to adds new behaviors to you controller. You can combine several mixins within the same controller.

import { Controller } from '@hotwired/stimulus'
import { useIntersection, useResize } from 'stimulus-use'

export default class extends Controller {
  connect() {
    useIntersection(this)
    useResize(this)
  }

  appear(entry) {
    // triggered when the element appears within the viewport
  }

  resize({ height, width }) {
    // trigered when the element is resized
  }
}

Extending built-in controllers

You can create your Stimulus controller from a pre-built Stimulus-use controller which offers the new behavior you're looking for. This method works perfectly when you only need a single behavior for your controller.

import { IntersectionController } from 'stimulus-use'

export default class extends IntersectionController {
  appear(entry) {
    // triggered when the element appears within the viewport
  }
}

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
  • yarn build - to bundle the app into static files for production

Contributors ✨

Made with ❀️ by @adrienpoly, @marcoroth and all these wonderful contributors (emoji key):

Marco Roth
Marco Roth

πŸš‡ πŸ’» πŸ‘€ πŸ›
Philipp Daun
Philipp Daun

πŸ›
M. E. Patterson
M. E. Patterson

πŸ›
Jonathan Sundqvist
Jonathan Sundqvist

πŸ“–
Rui Freitas
Rui Freitas

πŸ“–
Nicolas Filzi
Nicolas Filzi

πŸ“–
Benjamin Darcet
Benjamin Darcet

πŸ“–
juancarlosasensio
juancarlosasensio

πŸ“–
lidqqq
lidqqq

πŸš‡ πŸ›
Julian Rubisch
Julian Rubisch

πŸ’» πŸ‘€
Takuya Fukuju
Takuya Fukuju

πŸ“–
Justin Coyne
Justin Coyne

πŸ“–
Asger Behncke Jacobsen
Asger Behncke Jacobsen

πŸ“–
Dan Callaghan
Dan Callaghan

πŸ“–
Konnor Rogers
Konnor Rogers

πŸ› πŸ’»
Francisco Presencia
Francisco Presencia

πŸ“–
Takayuki Shimada
Takayuki Shimada

πŸ›
Dylan Clarke
Dylan Clarke

πŸ’» πŸ“–
Martin Tomov
Martin Tomov

πŸ“–
Ryan Weaver
Ryan Weaver

πŸ“– πŸ›
Adrien S
Adrien S

πŸ›
Felix Albroscheit
Felix Albroscheit

πŸ›
Guillaume Briday
Guillaume Briday

πŸ’»
craisp
craisp

πŸ› πŸ’»
Gabriel
Gabriel

πŸ› πŸ’»
Donnie Flood
Donnie Flood

πŸ’»
Γ“scar Carretero
Γ“scar Carretero

πŸ‘€ πŸ›
Ikko Ashimine
Ikko Ashimine

πŸ“–
Michael Coyne
Michael Coyne

πŸ›
Ollie Harridge
Ollie Harridge

πŸ“–
Leon Vogt
Leon Vogt

πŸš‡ πŸ’»
Thomas KΓΆnig
Thomas KΓΆnig

πŸ“–
Scott
Scott

πŸ›
Daniel Rikowski
Daniel Rikowski

πŸ›
Marc KΓΆhlbrugge
Marc KΓΆhlbrugge

πŸ€”

This project follows the all-contributors specification. Contributions of any kind welcome!

Acknowledgments

Continuous integration and cross browser testing is generously provided Sauce Labs.

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