JS如何获取当前日期YYYY-MM-DD格式？

js如何获取当前日期yyyy-mm-dd格式？

function gettoday(){
	        var date = new date();
	        var seperator1 = "-";
	        var year = date.getfullyear();
	        var month = date.getmonth() + 1;
	        var strdate = date.getdate();
	        if (month >= 1 && month <= 9) {
	            month = "0" + month;
	        }
	        if (strdate >= 0 && strdate <= 9) {
	            strdate = "0" + strdate;
	        }
	        var currentdate = year + seperator1 + month + seperator1 + strdate;
	        return currentdate;
}