del.js
function(el) {
		return (el instanceof $ ? el : $(el)).find(this.makeSelector.apply(this, [].slice.call(arguments, 1)));
	}
function(el) {
		return (el instanceof $ ? el : $(el)).find(this.makeSelector.apply(this, [].slice.call(arguments, 1)));
	}
function ( el ) { return ( el instanceof $ ? el : $ ( el ) ) . find ( this . makeSelector . apply ( this , [ ] . slice . call ( arguments , 1 ) ) ) ; }
Find element in other el
@param {jQuery|string|DOMElement} el el to find in
@param {string|array} element name
@return {jQuery}
Find element in other el