javascript-sort_date

var orderBy = 'asc';
var hoge = [
  {finish: '2012-01-12 11:00', msg: 'hoge'}
  , {finish: '2012-02-12 12:00', msg: 'foge'}
  , {finish: '2012-03-13 13:00', msg: 'boge'}
  , {finish: '2012-04-14 14:00', msg: 'goge'}
  , {finish: '2012-05-15 15:00', msg: 'toge'}
];
fuga = hoge.map(function(v){
		v.timeserial = Date.parse(v.finish);
		return v;
	})
	.sort(function(a,b){
		if ('asc' == orderBy) {
			// asc(日付古い順)
			return a.timeserial-b.timeserial;
		}
		else {
			// desc(日付新しい順)
			return b.timeserial-a.timeserial;
		}
	})
	.map(function(v){
		delete v.timeserial;
		return v;
	});