datepicker插件placeholder插入当前日期

//处理默认日期
$(function(){
  let mydate = new Date();
  let year = mydate.getFullYear().toString(); //获取完整的年份
  let month = (mydate.getMonth()+1).toString(); //获取当前月份
  let date = mydate.getDate().toString(); //获取当前日
  let result = year + '年' + month + '月' + date +'日'
  console.log(month)
  $datepicker.attr('placeholder', result)
})