Javascript Generate random base60 ID

genId.js

function genId(len) {

	var chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ23456789'.split('');
	var id = '';

	for (var i = 0; i < len; i++) {
		var index = Math.floor(Math.random() * chars.length);
		id += chars[index];
	}

	return id;

  // use this if you want an ID based on the month, day, hour, minute, and second
	// var now = new Date();
	// id += chars[now.getMonth()];
	// id += chars[now.getDate()];
	// id += chars[now.getHours()];
	// id += chars[now.getMinutes()];
	// id += chars[now.getSeconds()];

	// return id;
}