我的JavaScript弹出模式只适用于第一个项目？

Question

你好，我想弹出一个模式，一旦用户点击一个div出现，我有一个脚本工作，但它将只在第一个div而不是所有的工作。我已经链接了下面的代码。你觉得我哪里错了？

    <!-- Trigger/Open The Modal -->
<div class="job-wrap">
  <button id="myBtn">
    <div class="job-box">
      <div class="text-box">
        <p class="position-type">Part Time</p>
        <p class="job-role">Graphic Designer</p>
        <p class="company-name">Deans School Supply</p>
      </div>
      <div class="time-box">
        <p>9 Days ago</p>
      </div>
    </div>
  </button>
</div>

<!-- The Modal -->
<div id="myModal" class="modal">

  <!-- Modal content -->
  <div class="modal-content">
    <span class="close">&times;</span>
    <p class="job-type">Full Time</p>
  </div>

</div>

<script>
// Get the modal
var modal = document.getElementById('myModal');

// Get the button that opens the modal
var btn = document.getElementById("myBtn");

// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];

// When the user clicks on the button, open the modal
btn.onclick = function() {
modal.style.display = "block";
}

// When the user clicks on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
}

// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
if (event.target == modal) {
    modal.style.display = "none";
}
}
</script>

Answer 1

首先，id属性在页面上应该是唯一的，不要重复它！(我假设这就是你正在做的，因为你想要多个按钮来打开模式)。其次，您只需要将第一个找到的id与document.getElementById函数进行匹配。您应该使用class属性和document.getElementsByClassName函数。

<!-- Trigger/Open The Modal -->
<div class="job-wrap">
  <button class="myBtn">
    <div class="job-box">
      <div class="text-box">
        <p class="position-type">Part Time</p>
        <p class="job-role">Graphic Designer</p>
        <p class="company-name">Deans School Supply</p>
      </div>
      <div class="time-box">
        <p>9 Days ago</p>
      </div>
    </div>
  </button>
</div>

<!-- The Modal -->
<div id="myModal" class="modal">

  <!-- Modal content -->
  <div class="modal-content">
    <span class="close">&times;</span>
    <p class="job-type">Full Time</p>
  </div>

</div>

<script>
// Get the modal
var modal = document.getElementById('myModal');

// Get the button that opens the modal
var btns = document.etElementsByClassName("myBtn");

// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];

// When the user clicks on the button, open the modal
for(var i = 0; i < btns.length; i++) {
    btns[i].onclick = function () {
        modal.style.display = "block";
    }
}

// When the user clicks on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
}

// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
if (event.target == modal) {
    modal.style.display = "none";
}
}
</script>