js 获得当前日期

function getNowFormatDate() {
   var date = new Date();
   var seperator1 = "-";
   var seperator2 = ":";
   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;
}