Question

我试图使用w3schools.com的一些示例代码在一个页面上包含多个模态。我已经包含了我尝试在下面使用的代码。我从这里得到了代码。 http://www.w3schools.com/howto/howto_css_modals.asp

以下是代码的实例。请注意，第一个Modal可以工作，但第二个Modal不会出现。 https://jsfiddle.net/y0uavmo0/

HTML：

<h2>Modal Example1</h2>

<!-- Trigger/Open The Modal -->
<button id="myBtn">Open Modal1</button>

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

  <!-- Modal content -->
  <div class="modal-content">
    <span class="close">×</span>
    <p>Some text in the Modal..1</p>
  </div>

</div>


<h2>Modal Example2</h2>

<!-- Trigger/Open The Modal -->
<button id="myBtn">Open Modal2</button>

<!-- The Modal -->
<div id="myModal2" class="modal">

  <!-- Modal content -->
  <div class="modal2-content">
    <span class="close">×</span>
    <p>Some text in the Modal..2</p>
  </div>
</div>

JS：

// 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 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

您指的是具有相同ID的按钮。因此，事件仅绑定第一个按钮，因为它首先出现在DOM中。

如果您要更改下面的JS代码

// Get the modal
var modal = document.getElementsByClassName('modal');

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


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

// When the user clicks the button, open the modal 
btn[0].onclick = function() {
    modal[0].style.display = "block";
}

btn[1].onclick = function() {
    modal[1].style.display = "block";
}
// When the user clicks on <span> (x), close the modal
span[0].onclick = function() {
    modal[0].style.display = "none";
}

span[1].onclick = function() {
    modal[1].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";
    }
}

和Html代码一样

<h2>Modal Example1</h2>

<!-- Trigger/Open The Modal -->
<button id="myBtn" class="myBtn">Open Modal1</button>

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

  <!-- Modal content -->
  <div class="modal-content">
    <span class="close">×</span>
    <p>Some text in the Modal..1</p>
  </div>

</div>


<h2>Modal Example2</h2>

<!-- Trigger/Open The Modal -->
<button id="myBtn" class="myBtn">Open Modal2</button>

<!-- The Modal -->
<div id="myModal2" class="modal">

  <!-- Modal content -->
  <div class="modal2-content">
    <span class="close">×</span>
    <p>Some text in the Modal..2</p>
  </div>

</div>

这将开始工作。虽然你的模态2会有一些css问题。

Answer 2

您可以对按钮使用相同的类，但必须使用不同的ID。

// Get the modal
var modal = document.getElementsByClassName('modal');

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


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

// When the user clicks the button, open the modal 
btn[0].onclick = function() {
    modal[0].style.display = "block";
}

btn[1].onclick = function() {
    modal[1].style.display = "block";
}
// When the user clicks on <span> (x), close the modal
span[0].onclick = function() {
    modal[0].style.display = "none";
}

span[1].onclick = function() {
    modal[1].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";
    }
}

/* The Modal (background) */
.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1; /* Sit on top */
    padding-top: 100px; /* Location of the box */
    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 {
    background-color: #fefefe;
    margin: auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
}

/* The Close Button */
.close {
    color: #aaaaaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close:hover,
.close:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}

<h2>Modal Example1</h2>

<!-- Trigger/Open The Modal -->
<button id="myBtn" class="myBtn">Open Modal1</button>

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

  <!-- Modal content -->
  <div class="modal-content">
    <span class="close">×</span>
    <p>Some text in the Modal..1</p>
  </div>

</div>


<h2>Modal Example2</h2>

<!-- Trigger/Open The Modal -->
<button id="myBtn2" class="myBtn">Open Modal2</button>

<!-- The Modal -->
<div id="myModal2" class="modal">

  <!-- Modal content -->
  <div class="modal-content">
    <span class="close">×</span>
    <p>Some text in the Modal..2</p>
  </div>

</div>

支持多模态单页

2 个答案: