how can i move my html element without losing the event listener attached to the button?
The child button's event listener does not work after cloning and removing the original element
ul.appendChild(element.cloneNode(true));
element.remove();
You've said you want to move it, but what you're doing is cloning it, saving the clone, and then removing and throwing away the original. Instead, don't clone it, move it:
ul.appendChild(element);
That will remove element from its current parent and put it in its new parent (ul), with all event listeners still in place.
Live Example:
// NOTE: This isn't how I'd write this code if I weren't demonstrating
// the fact the listeners are retained when the element is moved.
// But without context, it's hard to show a delegation solution.
const list1 = document.getElementById("list1");
const list2 = document.getElementById("list2");
// Add a listeneer to each `li`
document.querySelectorAll("li").forEach((li, index) => {
li.addEventListener("click", () => {
console.log(`Moving "${li.textContent}" which was originally at index ${index}`);
if (li.closest("ul") === list1) {
// Move from list1 to list2
list2.appendChild(li);
} else {
// Move from list2 to list1
list1.appendChild(li);
}
});
});li {
cursor: pointer;
}<div>List 1:</div>
<ul id="list1">
<li>Item 1</li>
<li>Item 2</li>
<li>Item 3</li>
</ul>
<div>List 2:</div>
<ul id="list2">
<li>Item 4</li>
<li>Item 5</li>
<li>Item 6</li>
</ul>
<div>Click an item to move it to the other list.</div>That said, I often find event delegation to be best when working with elements that move between parents, but it really depends on the situation.