https://fgcchamber.org/assets/controllers/event_end_date_controller-ed580006.js

1import { Controller } from "@hotwired/stimulus"
2
3// An end time needs an end date. When staff enter an end time without one,
4// assume the event ends on the day it starts, and keep that date in step
5// with the start date until staff pick a different end date.
6export default class extends Controller {
7  static targets = ["startDate", "endDate", "endTime"]
8
9  fill() {
10    const endDate = this.endDateTarget
11    if (endDate.value !== "" && endDate.value !== this.filledDate) return
12
13    endDate.value = this.endTimeTarget.value === "" ? "" : this.startDateTarget.value
14    this.filledDate = endDate.value
15  }
16}