JS获取日期yy-mm-dd格式

方法一：

var myDate=new Date(); 
var month = myDate.getMonth() + 1;
var Day = myDate.getDate();
var today = "";
if(month<10){
if(Day<10){
today = myDate.getFullYear() + "-0" + month + "-0" + Day;
}else{
today = myDate.getFullYear() + "-0" + month + "-" + Day;
}
}
else{
if(Day<10){
today = myDate.getFullYear() + "-" + month + "-0" + Day;
}else{
today = myDate.getFullYear() + "-" + month + "-" + Day;
}
}

方法二：

function appendZero(s){return ("00"+ s).substr((s+"").length);}  //补0函数
var d = new Date();
alert(d.getFullYear() + "-" + appendZero(d.getMonth() + 1) + "-" + appendZero(d.getDate()));