Filters an array based on filter. Accepts regex or simple string. Returns a filtered array.

gistfile1.txt

var filter = '.png';
var list = ['userimage105325.png','userimage669.jpg','userimage6929.png','userimage85818.gif'];
 
function filterArray(array, filter){
	var i, filteredArray = [];
	filter = new RegExp(filter, 'g');
	for( i = 0, len = array.length; i < len; i++ ){
		if( array[i].toString().match(filter) ){
			filteredArray.push( array[i] );
		}
	}
	return filteredArray;
}