Arbitrary timestamp-time format conversion

var formattedTime = this.formatDate(new Date(), 'MM/dd hh:mm:ss')
formatDate(date, format) {
			var o = {
				'M+': date.getMonth() + 1,
				'd+': date.getDate(),
				'h+': date.getHours(),
				'm+': date.getMinutes(),
				's+': date.getSeconds(),
				'q+': Math.floor((date.getMonth() + 3) / 3),
				S: date.getMilliseconds()
			}
			if (/(y+)/.test(format)) format = format.replace(RegExp.$1, (date.getFullYear() + '').substr(4 - RegExp.$1.length))
			for (var k in o)
				if (o.hasOwnProperty(k)) {
					if (new RegExp('(' + k + ')').test(format)) format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ('00' + o[k]).substr(('' + o[k]).length))
				}
			return format
		}