Leaflet.org

When it comes to finding relationships between elements, we traditionally think of a top-down approach. We can thank CSS and querySelector/querySelectorAll for that relationship in selectors. What if we want to find an element’s parent based on selector? To look up the element tree and find a parent by selector, you can use HTMLElement‘s closest method: // Our sample element is an "a" tag that matches ul > li > a const link = document.querySelector('li a'); const list = a.closest('ul'); closest looks up the ancestor chain to find a matching parent element — the opposite of traditional CSS selectors. You can provide closest a simple or complex selector to look upward... more →