https://www.getawindow.co.uk/build/controllers/ho_project_note_controller--eM2rDj.js

1import {Controller} from '@hotwired/stimulus';
2
3/* stimulusFetch: 'lazy' */
4export default class extends Controller {
5    static targets = ['submit', 'input', 'count'];
6
7    // Reports how much of the note has been typed. The maximum is rendered server-side next to
8    // this number and enforced by the textarea's own maxlength, so only the count changes here.
9    onInput() {
10        if (this.hasCountTarget && this.hasInputTarget) {
11            this.countTarget.textContent = String(this.inputTarget.value.length);
12        }
13    }
14
15    // Disable the submit button while the form is being submitted to prevent duplicate notes, and
16    // show it as busy. The `loading` class restores the button's own colour, which `:disabled`
17    // would otherwise grey out, and reveals the spinner already in the markup.
18    onSubmit() {
19        if (this.hasSubmitTarget) {
20            this.submitTarget.disabled = true;
21            this.submitTarget.classList.add('loading');
22            this.submitTarget.setAttribute('aria-busy', 'true');
23        }
24    }
25}