Closest ancestor matching selector using native DOM?

Question

Is anybody working on a jQuery.closest() equivalent in the DOM api?

Looks like the Selectors Level 2 draft adds matches() equivalent to jQuery.is(), so native closest should be much easier to write. Has adding closest() to Selectors come up?

Answer 1

Building off of Alnitak's answer. Here's the working current implementation with matchesSelector which is now matches in the DOM spec.

// get nearest parent element matching selector
function closest(el, selector) {
    var matchesSelector = el.matches || el.webkitMatchesSelector || el.mozMatchesSelector || el.msMatchesSelector;

    while (el) {
        if (matchesSelector.call(el, selector)) {
            break;
        }
        el = el.parentElement;
    }
    return el;
}

Browser support is great: http://caniuse.com/matchesselector