Ajax post neden mobilde çalışmıyor

<div class="col-sm-6 col-lg-2 pt-6">
                            <label class="text-uppercase font-weight-500 letter-spacing-093 mb-1">il</label>
                            <select name="il" id="il" class="form-control selectpicker bg-transparent border-bottom rounded-0 border-color-input"  data-style="p-0 h-24 lh-17 text-dark" name="il" id="il">
                                <option><?=@$dil['txt440_5'];?></option>
                                <?php
                                $ILsor = $db->prepare("SELECT * FROM il ORDER BY id ASC");
                                $ILsor->execute();
                                $ILisle = $ILsor->fetchALL(PDO::FETCH_ASSOC);
                                foreach ($ILisle as $ILson){
                                ?>
                                <option value="<?=$ILson["id"];?>"><?=$ILson["iladi"];?></option>
                                <?
                                }
                                ?>
                            </select>
                        </div>
                        <div class="col-sm-6 col-lg-2 pt-6">
                            <label class="text-uppercase font-weight-500 letter-spacing-093 mb-1">İlçe</label>
                            <select class="form-control selectpicker bg-transparent border-bottom rounded-0 border-color-input" name="ilce" id="ilce" onchange="findAddress2(); return false" data-style="p-0 h-24 lh-17 text-dark">
                            </select>
                        </div>
                        <div class="col-sm-6 col-lg-2 pt-6">
                            <label class="text-uppercase font-weight-500 letter-spacing-093 mb-1">Mahalle</label>
                            <select class="form-control selectpicker bg-transparent border-bottom rounded-0 border-color-input" name="semt" id="semt"  data-style="p-0 h-24 lh-17 text-dark" onchange="findAddress3(); return false">
                            </select>
                        </div>

<script>
    $(document).ready(function(e) {
        $('#il').bind('change', ilceleriGetir);
        $('#ilce').bind('change', semtleriGetir);
    });
    function ilceleriGetir() {
        var ilid = $(this).val();
        var ilceid=$("#ilceid").val();
        $.ajax({
            type: "post",
            url: "/data/yapi.php",
            data: {
                "ilid": ilid,
                "ilceid": ilceid
            },
            dataType: "json",
            success: function(fur) {
                $("#ilce").html(fur.basari);
            }
        });
    }
    function semtleriGetir() {
        var ilceid = $("#ilce").val();
        var semtid = $("#semtid").val();
        $.ajax({
            type: "post",
            url: "/data/yapi.php ",
            data: {
                "ilceid": ilceid,
                "semtid": semtid
            },
            dataType: "json",
            success: function(fur) {
                $("#semt").html(fur.basari);
            }
        });
    }
    $('#il').ready(function() {
        var ilid = $("#il").val();
        var ilceid=$("#ilceid").val();
        var semtid=$("#semtid").val();
        if (ilid != 0) {
            $.ajax({
                type: "post",
                url: "/data/yapi.php ",
                data: {
                    "ilid": ilid,
                    "ilceid": ilceid,
                    "semtid": semtid
                },
                dataType: "json",
                success: function(fur) {
                    $("#ilce").html(fur.basari);
                    setTimeout(function() { semtleriGetir(); }, 500);
                }
            });
        } else {
            $("#ilce").html('<option value="0">İlçe Seçiniz</option>');
        }
    });
</script>

// Axios kütüphanesini projeye ekleyin
const axios = require('axios');

// GET isteği yapma örneği
axios.get('https://api.example.com/data')
  .then(response => {
    console.log(response.data);
  })
  .catch(error => {
    console.error('Hata oluştu:', error);
  });