77     clickHandler(ev) {  argument
78         const target = ev.target;
91             ev.stopPropagation();
98             ev.stopPropagation();
105             ev.stopPropagation();
115     submitHandler(ev) {  argument
140         ev.target.appendChild(input);
148     dragStartHandler(ev) {  argument
149         if (!ev.target) return;
150         const li = ev.target.closest('li');
153         ev.dataTransfer.setData('text/plain', li.dataset.id); // FIXME needed?
154         ev.dataTransfer.effectAllowed = 'move';
155         ev.dataTransfer.setDragImage(this.#dragIcon, -12, -12);
166     dragOverHandler(ev) {  argument
172         if (!ev.target) return;  // the element the mouse is over
174         const li = ev.target.closest('li');
183             ul = ev.target.closest('ul');
187         ev.preventDefault(); // allow drop
198     dragDropHandler(ev) {  argument
199         if (!ev.target) return;
256     dragEndHandler(ev) {  argument