jquery 获取当前时间，月份加减，日期加减

jquery 获取当前时间，月份加减，日期加减

代码有点粗糙

function getNowDate(day) {
	var date = new Date();
	var seperator1 = "-";
	var seperator2 = ":";
	var month = date.getMonth()+day;
	var strDate = date.getDate();
	if (month >= 1 && month <= 9) {
		month = "0" + month;
	}
	if (strDate >= 0 && strDate <= 9) {
		strDate = "0" + strDate;
	}
	var currentdate = date.getFullYear() + seperator1 + month + seperator1 + strDate;
	// + " " + date.getHours() + seperator2 + date.getMinutes()
	// + seperator2 + date.getSeconds();
	return currentdate;
}