我怎样才能让一个在移动设备上工作的表中的循环触发Modal？

<table>
  <tr>
    <td>John</td>
    <td>Doe</td>
    <td><button class="modal-trigger">Open Modal</button></td>
  </tr>
  <tr>
    <td>Jane</td>
    <td>Smith</td>
    <td><button class="modal-trigger">Open Modal</button></td>
  </tr>
</table>

<div class="modal">
  <div class="modal-content">
    <span class="close">&times;</span>
    <p id="modal-data"></p>
  </div>
</div>

.modal {
  display: none;
  position: fixed;
  z-index: 1;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.4);
}

.modal-content {
  background-color: #fefefe;
  margin: 15% auto;
  padding: 20px;
  border: 1px solid #888;
  width: 80%;
}

.close {
  color: #aaa;
  float: right;
  font-size: 28px;
  font-weight: bold;
}

.close:hover,
.close:focus {
  color: black;
  text-decoration: none;
  cursor: pointer;
}

// 获取所有的modal-trigger元素
var triggers = document.getElementsByClassName("modal-trigger");

// 给每个trigger绑定点击事件处理程序
for (var i = 0; i < triggers.length; i++) {
  triggers[i].addEventListener("click", function() {
    // 获取对应行的数据
    var rowData = this.parentNode.parentNode.getElementsByTagName("td");
    var firstName = rowData[0].innerHTML;
    var lastName = rowData[1].innerHTML;

    // 填充数据到Modal中
    document.getElementById("modal-data").innerHTML = "First Name: " + firstName + "<br>Last Name: " + lastName;

    // 显示Modal
    document.getElementsByClassName("modal")[0].style.display = "block";
  });
}

// 获取关闭按钮元素
var closeBtn = document.getElementsByClassName("close")[0];

// 给关闭按钮绑定点击事件处理程序
closeBtn.addEventListener("click", function() {
  // 隐藏Modal
  document.getElementsByClassName("modal")[0].style.display = "none";
});