matches/matchesSelector is pretty hot 🔥, but has vendor-prefix baggage 👜 👝. This helper function takes care of that, without augmenting Element.prototype.
matchesSelector( elem, selector );
matchesSelector( myElem, 'div.my-hawt-selector' );
// this DOES NOT polyfill myElem.matchesSelectorDownload matches-selector.js
Install with Bower: bower install matches-selector
Install with npm: npm install desandro-matches-selector
Install with Component: component install desandro/matches-selector
matchesSelector is released under the MIT license