Sorry guys, I’m being silly again. I definitely need to stop drinking!

Trying to create a live make / model search box for vehicles as you’ll hopefully tell from the below code.

Any help / overview would be much appreciated as I’ve probably done something stupid. Thanks in advance :))

Java:

// Get the Make
function getModels(choseMake) {
// Get Request
var xhr = new XMLHttpRequest();

// Model Info Request
xhr.open("GET", "scripts/modelSearch.php.php?vehicle_make=" + vehicle_make, true);

// Retrieve Data
xhr.onreadymakechange = function() {
    // Request OK
    if (xhr.readyState === 4 && xhr.status === 200) {

        // Json Data
        var v_models = JSON.parse(xhr.responseText);

        // Drop Down Assignment
        var choseModeldropdown = document.getElementById("choseModel");

        // Reset Options On DropDown
        vmakeDropdown.innerHTML = "<option value=''>Select Models</option>";
        
        // Enable dropdown
        vmakeDropdown.disabled = false;

        // Model Loops
        vehicleMakes.forEach(choseModel => {
            var option = document.createElement("vehicle_model");
            option.value = choseModel.vehicle_model;
            option.text = choseModel.vehicle_model;
            vmakeDropdown.appendChild(option);
        });
    }
};

// Send Request
xhr.send();
}
</script>   

HTML:

                    <div class="Ears-2Column2Row-2Column">
                        <li>
                            <label>Make</label>
                        </li>
                        <li>
                          <select name="choseMake" id="choseMake" class="formOptions" onchange="getModels(this.value)">
                             <option selected value="">Select Make</option>
                            <?php foreach($Result_mainPageMakes as $Row_mainPageMakes) { ?>
                                <option value="<?php echo $Row_mainPageMakes['vehicle_make']; ?>"><?php echo $Row_mainPageMakes['vehicle_make']; ?></option>
                            <?php }?>
                            </select>
                        </li>
                    </div>
                    <div class="Ears-2Column2Row-2Column">
                        <li>
                            <label>Model</label>
                        </li>
                        <li>

                          <select name="choseModel" id="choseModel" class="formOptions">
                            <option value="">Select Models</option>
                          </select>
                    </li>
                    </div>

modelSearch.php

include '/Databases/dbConnection';

// Clear Make-Clean
$vehicleMake = filter_input(INPUT_GET, "vehicleMake", FILTER_SANITIZE_STRING);

// Check Make-Passed
if (empty($vehicleMake)) {
  die("Invalid Vehicle Make");
}

// Search Makes
$sql_makeQuery = "SELECT vehicle_model FROM vehicle_data WHERE vehicle_make = '$vehicleMake'";
$result_makeQuery = mysqli_query($vehicleMakesDB, $sql_makeQuery);

// mysqli_fetch_all
$vehicleMakes = mysqli_fetch_all($result_makeQuery, MYSQLI_ASSOC);

// JSON response.
echo json_encode($vehicleMakes);

// Close DB.
mysqli_close($vehicleMakesDB);