【黄啊码】利用padStart自动补全实现日期格式化最简模式

getNowTime() {
         var now = new Date();
         var year = now.getFullYear(); //得到年份
         var month = now.getMonth(); //得到月份
         var date = now.getDate(); //得到日期
         month = month + 1;
         month = month.toString().padStart(2, "0");
         date = date.toString().padStart(2, "0");
         var defaultDate = year+'-'+month+'-'+date;
         return defaultDate;
      },