* Support testing using an element * @param {Function} fn Passed the created element and returns a boolean result

* Support testing using an element * @param {Function} fn Passed the created element and returns a boolean result

* Mark a function for special use by Sizzle * @param {Function} fn The function to mark

* Mark a function for special use by Sizzle * @param {Function} fn The function to mark

* Attaches event to a dom element. * @param {Element} el * @param type event name * @param fn callback This refers to the passed elemen

* Returns a function to use in pseudos for positionals * @param {Function} fn

* Returns a function to use in pseudos for positionals * @param {Function} fn