如何将number_field作为参数传递给控制器？

<input type="number" id="myNumberField" />

<button onclick="sendNumberField()">提交</button>

<script>
function sendNumberField() {
  var numberField = document.getElementById("myNumberField").value;
  
  // 使用AJAX将numberField的值发送到后端控制器
  var xhr = new XMLHttpRequest();
  xhr.open("POST", "/my-controller", true);
  xhr.setRequestHeader("Content-Type", "application/json");
  xhr.onreadystatechange = function() {
    if (xhr.readyState === 4 && xhr.status === 200) {
      // 处理响应
    }
  };
  xhr.send(JSON.stringify({ numberField: numberField }));
}
</script>

public function myController(Request $request) {
  $numberField = $request->input('numberField');
  
  // 进行相应的处理
}