Range function

range.js

/*
* Range
* @author: Alexander Guinness
* @version: 1.0
* @license: MIT
* @date: 7/20/12 9:28 PM
*/

function range (from, to, step) {
	var array = [];

	step = step || 1;

	try {
		for (var i = from.charCodeAt(0); i <= to.charCodeAt(0); i += step) {
			array.push(String.fromCharCode(i));
		}
	}
	catch (error) {
		for (var i = from; i <= to; i += step) {
			array.push(i);
		}
	}

	return array;
};

console.log(range('a', 'e')); // ['a', 'c', 'e'];