js显示当前年月日

js显示当前年月日：2015-09-22

function showDate() {var d = new Date();            var y = d.getFullYear();            var m = d.getMonth()+1;            var d = d.getDate();            var partten = 'y-m-d';            var r = partten.replace(/y+/gi,y);            r = r.replace(/m+/gi,(m<10?"0":"")+m);            r = r.replace(/d+/gi,(d<10?"0":"")+d);$("#bidsDate").val(r);}