Get all an element's attributes & values as a matrix

attrs.js

// Return all attributes, optionally filtered by RegExp 
$.fn.attrs = function(expr){ 
	var 
		el = this[0], 
		$el = this, 
		attrArray = [];

	for(var i=0, attrs = el.attributes; i<attrs.length; ++i){ 
		var attrKey = [
			attrs.item(i).nodeName, 
			attrs.item(i).nodeValue
		];

		if(!expr || expr.test(attrKey[0])) 
			attrArray.push(attrKey); 
	};

	return attrArray;
};