Components

Textarea Autogrow

GitHub

A Stimulus controller for autogrowing textarea.

Installation

  1. Install the package

    Terminal
    $ yarn add stimulus-textarea-autogrow

  2. Register the controller in your application

    app/javascript/controllers/index.js
    import { Application } from '@hotwired/stimulus'
import TextareaAutogrow from 'stimulus-textarea-autogrow'

const application = Application.start()
application.register('textarea-autogrow', TextareaAutogrow)

Usage

app/views/index.html
<textarea data-controller="textarea-autogrow">
Very long text here.
</textarea>

<textarea data-controller="textarea-autogrow" data-textarea-autogrow-resize-debounce-delay-value="500">
Very long text here.
</textarea>

Configuration

The height is calculated on window resize to match the content height.

AttributeDefaultDescriptionOptional
data-textarea-autogrow-resize-debounce-delay-value100Delay before autogrow on resize in milliseconds (0 to disable).✅

Extending Controller

You can use inheritance to extend the functionality of any Stimulus component:

app/javascript/controllers/textarea_autogrow_controller.js
import TextareaAutogrow from "stimulus-textarea-autogrow"

export default class extends TextareaAutogrow {
  connect() {
    super.connect()
    console.log("Do what you want here.")
  }
}

This controller will automatically have access to targets defined in the parent class.

If you override the connect, disconnect or any other methods from the parent, you'll want to call super.method() to make sure the parent functionality is executed.