如何在materilize CSS中控制自动打开的Datepicker？

Demo link

演示链接

   <input type="date" class="datepicker">

    $('.datepicker').pickadate({
        selectMonths: true, // Creates a dropdown to control month
        selectYears: 15 // Creates a dropdown of 15 years to control year
   });
   <input type="date" class=