jquery 年月日分离

function bh_LoadViewState(){
     var v=$("#hBirthday").val();
     if(v=="")return;
     var birthday=new Date(Date.parse(v.replace(/-/g, '/')))
      $("#ddlYear").val(birthday.getFullYear());
      $("#ddlMonth").val(birthday.getMonth()+1);
      bh_setDayCount();
      $("#ddlDay").val(birthday.getDate());

    
}