class ToggleSwitch { constructor(elem) { this.elem = elem; this.input = elem.querySelector('input[type=hidden]'); this.checkbox = elem.querySelector('input[type=checkbox]'); this.checkbox.addEventListener('change', this.stateChange.bind(this)); } stateChange() { this.input.value = (this.checkbox.checked ? 'true' : 'false'); } } export default ToggleSwitch;