Question

我需要在单击按钮时在模式内传播不同的内容。我的问题是-调用JavaScript中的div元素。截至目前，这是一个ID，我不能有多个ID。自从我是JS新手以来，我对所有事情都很困惑。

最简单的形式，我只需要按钮1 与按钮1 ，按钮2 和按钮2 链接>，依此类推。我不确定要在JS中进行哪些更改才能使其正常工作。

<button id="modalbutton" class="modalbutton">Open Modal 1</button>
<button id="modalbutton" class="modalbutton">Open Modal 2</button>
<button id="modalbutton" class="modalbutton">Open Modal 3</button>

<!-- Content 1 -->
<div id="detailmodal" class="modal">
  <!-- Modal content -->
  <div class="modal-content">
    <div class="modal-header">
      <span class="close">&times;</span>
      <h2>1 Modal Header</h2>
    </div>
    <div class="modal-body">
      <p>please link with 1</p>
      <p>Some other text...</p>
    </div>
    <div class="modal-footer"><h3>Modal Footer</h3></div>
  </div>
</div>

<!-- Content 2 -->
<div id="detailmodal" class="modal">
  <!-- Modal content -->
  <div class="modal-content">
    <div class="modal-header">
      <span class="close">&times;</span>
      <h2>2 Modal Header</h2>
    </div>
    <div class="modal-body">
      <p>please link with 2</p>
      <p>Some other text...</p>
    </div>
    <div class="modal-footer"><h3>Modal Footer</h3></div>
  </div>
</div>

<!-- Content 3 -->
<div id="detailmodal" class="modal">
  <!-- Modal content -->
  <div class="modal-content">
    <div class="modal-header">
      <span class="close">&times;</span>
      <h2>3 Modal Header</h2>
    </div>
    <div class="modal-body">
      <p>please link with 3</p>
      <p>Some other text...</p>
    </div>
    <div class="modal-footer"><h3>Modal Footer</h3></div>
  </div>
</div>

脚本：

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

// When the user clicks the buttons open the modal
for (let i = 0; i < btn.length; i++) {
  btn[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';
  }
};

Answer 1

您正确的是，您不想拥有多个ID。您可以做的是将每个按钮设置为不同的ID（modalbutton1，modalbutton2等），然后在javascript中获取对每个按钮的引用：

var modal1 = document.getElementById('modalbutton1');
var modal2 = document.getElementById('modalbutton2');

然后针对每个按钮引用，您将附加一个onclick处理程序

modal1.onclick=function(){ //Write your style code here }
modal2.onclick=function(){ //Write your style code here }

Answer 2

您需要使用索引document.getElementsByClassName('modal')[i]

来区分它们

立即尝试：

// Get the modal
    
    var modal = document.getElementById('detailmodal');


    // Get the button that opens the modal
    var btn = document.getElementsByClassName("modalbutton");

    // Get the <span> element that closes the modal
    var span = document.getElementsByClassName("close");

    // When the user clicks the buttons open the modal 
    for (let i = 0; i < btn.length; i++) {
      btn[i].onclick = function() {
      document.getElementsByClassName('modal')[i].style.display = "block";
      }
    }
 for (let i = 0; i < span.length; i++) {
    // When the user clicks on <span> (x), close the modal
    span[i].onclick = function() {
      document.getElementsByClassName('modal')[i].style.display = "none";
    }
}
    // When the user clicks anywhere outside of the modal, close it
    for (let i = 0; i < window.length; i++) {
    window[i].onclick = function(event) {
      if (event.target == modal) {
        document.getElementsByClassName('modal')[i].style.display = "none";
      }
    }}

/* The Modal (background) */
.modal {
  display: none; /* Hidden by default */
  position: fixed; /* Stay in place */
  z-index: 1; /* Sit on top */
  left: 0;
  top: 0;
  width: 100%; /* Full width */
  height: 100%; /* Full height */
  overflow: auto; /* Enable scroll if needed */
  background-color: rgb(0,0,0); /* Fallback color */
  background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
}

/* Modal Content */
.modal-content {
    position: relative;
    float: right;
    background-color: #fefefe;
    margin: auto;
    padding: 0;
    border: 1px solid #888;
    max-width: 850px;
    width: 100%;
    height: 100%;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
    -webkit-animation-name: animatetop;
    -webkit-animation-duration: 0.4s;
    animation-name: animatetop;
    animation-duration: 0.8s
}

/* Add Animation */
@-webkit-keyframes animatetop {
  from {right:-100px; opacity:0} 
  to {right:0; opacity:1}
}

@keyframes animatetop {
  from {right:-100px; opacity:0}
  to {right:0; opacity:1}
}

<button id="modalbutton" class="modalbutton">Open Modal 1</button>

<button id="modalbutton" class="modalbutton">Open Modal 2</button>

<button id="modalbutton" class="modalbutton">Open Modal 3</button>

<!-- Content 1 -->
<div id="detailmodal" class="modal">

<!-- Modal content -->
<div class="modal-content">
  <div class="modal-header">
    <span class="close">&times;</span>
    <h2>1 Modal Header</h2>
  </div>
  <div class="modal-body">
    <p>please link with 1</p>
    <p>Some other text...</p>
  </div>
  <div class="modal-footer">
    <h3>Modal Footer</h3>
  </div>
</div>

</div>

<!-- Content 2 -->
<div id="detailmodal" class="modal">

<!-- Modal content -->
<div class="modal-content">
  <div class="modal-header">
    <span class="close">&times;</span>
    <h2>2 Modal Header</h2>
  </div>
  <div class="modal-body">
    <p>please link with 2</p>
    <p>Some other text...</p>
  </div>
  <div class="modal-footer">
    <h3>Modal Footer</h3>
  </div>
</div>

</div>

<!-- Content 3 -->
<div id="detailmodal" class="modal">

<!-- Modal content -->
<div class="modal-content">
  <div class="modal-header">
    <span class="close">&times;</span>
    <h2>3 Modal Header</h2>
  </div>
  <div class="modal-body">
    <p>please link with 3</p>
    <p>Some other text...</p>
  </div>
  <div class="modal-footer">
    <h3>Modal Footer</h3>
  </div>
</div>

</div>

Answer 3

如果您的html内容是静态的并且模式数据不是动态的，那么安全的方法是使用多个ID。我认为对多个按钮和div标签使用相同的ID不是一个好主意。如果模态div标签的顺序不正确，则按钮将无法正常工作，并且可能显示了错误的模态。

所以最好这样写：

        btns = document.querySelectorAll('[id*=modalbutton-]');

for (let i = 1; i <= btns.length; i++) {
    var modalClassName = 'detailmodal-';

    btn = document.getElementById('modalbutton-' + i);     
  closeBtn = document.querySelector('#' + modalClassName + i + ' .close');

  closeBtn.onclick = function() {
    modal = document.getElementById(modalClassName + i);
    modal.style.display = "none";
    }

  btn.onclick = function() {
    modal = document.getElementById(modalClassName + i);
    modal.style.display = "block";
  }
}

按钮和模式的html模式：

<button id="modalbutton-1" class="modalbutton">Open Modal 1</button>
<div id="detailmodal-1" class="modal">

<button id="modalbutton-2" class="modalbutton">Open Modal 2</button>
<div id="detailmodal-2" class="modal">

如果您不能使用多个ID，请使用具有某些值的data属性。您可以更改上面的代码以使用属性，并使用其值来显示正确的模式。

<button id="modalbutton" data-button-id="1" class="modalbutton">Open Modal 1</button>
<div id="detailmodal" data-modal-id="1" class="modal">

并像这样更改您的for循环

for (let i = 0; i < btn.length; i++) {
  btn[i].onclick = function(event) {
    var btnId = event.target.getAttribute("data-button-id");
    var modal = document.querySelector("[data-modal-id='" + btnId +"']");
    modal.style.display = "block";
  }
}

将特定按钮链接到特定模式

3 个答案: