在datepicker中设置minDate和maxDate

Question

我希望每次选择新日期时都能动态设置minDate和maxDate

$("#dtpik1").datepicker({
  minDate: "-3M",
  maxDate: '0D',
  dateFormat: "dd/mm/yy",
  onSelect: function(selected, date, value) {
    var d = new Date()
    var d1 = d.getDate()
    var date2 = $("#dtpik1").datepicker("getDate")
    date2.setDate(date2.getDate() + 30)
    var date3 = $("#dtpik1").datepicker("getDate")

    if (d > date2) {
      $('#dtpik2').datepicker({
        dateFormat: "dd/mm/yy",
        changeMonth: true,
        changeYear: true,
        minDate: '-4M' && date3,
        maxDate: date2
      });
      $('#dtpik2').datepicker('setDate', date2);
    } else {
      $('#dtpik2').datepicker({
        dateFormat: "dd/mm/yy",
        changeMonth: true,
        changeYear: true,
        minDate: '-4M' && date3,
        maxDate: d
      });
      $('#dtpik2').datepicker('setDate', d);
    }
  },
});