javascript - 带有页眉和页脚的双动画模态

Question

我找到了如何创建模态的信息 https://www.w3schools.com/howto/tryit.asp?filename=tryhow_css_modal2

事实上我没有java脚本知识

我需要你帮助我在一个 .html 页面中创建 4 或 5 个 JavaScript 模式

我已经尝试过这段代码:

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

var modal = document.getElementById('myModal2');

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

var btn = document.getElementById("myBtn2");

// 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>

<style>
/* 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 {
    position: relative;
    background-color: #fefefe;
    margin: auto;
    padding: 0;
    border: 1px solid #888;
    width: 80%;
    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: 0.4s
}

/* Add Animation */
@-webkit-keyframes animatetop {
    from {top:-300px; opacity:0} 
    to {top:0; opacity:1}
}

@keyframes animatetop {
    from {top:-300px; opacity:0}
    to {top:0; opacity:1}
}

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

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

.modal-header {
    padding: 2px 16px;
    background-color: #5cb85c;
    color: white;
}

.modal-body {padding: 2px 16px;}

.modal-footer {
    padding: 2px 16px;
    background-color: #5cb85c;
    color: white;
}

<h2>Animated Modal with Header and Footer</h2>

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

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

  <!-- Modal content -->
  <div class="modal-content">
    <div class="modal-header">
      <span class="close">&times;</span>
      <h2>Modal Hecccccccccccccader</h2>
    </div>
    <div class="modal-body">
      <p>Some text in the Modal Body</p>
      <p>Some other cccccccccccctext...</p>
    </div>
    <div class="modal-footer">
      <h3>Modal ccccccccccccccFooter</h3>
    </div>
  </div>

</div>


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

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

  <!-- Modal content -->
  <div class="modal-content">
    <div class="modal-header">
      <span class="close">&times;</span>
      <h2>Modaldddddddddddd Header</h2>
    </div>
    <div class="modal-body">
      <p>Some textdddddddddddddddddd in the Modal Body</p>
      <p>Some otherdddddddddddddddddddd text...</p>
    </div>
    <div class="modal-footer">
      <h3>Modal Footer</h3>
    </div>
  </div>

</div>

*!--- ---->

结果这些按钮都不起作用或无法正确显示

Answer 1

Hello 模态正在使用 ID，我们不能使用相同的 ID，因此，我们需要像这样为每个模态使用特定变量并删除 <script>来自片段

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

var modal2 = document.getElementById('myModal2');

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

var btn2 = document.getElementById("myBtn2");

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

var span2 = document.getElementsByClassName("close2")[0];

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

btn2.onclick = function() {
    modal2.style.display = "block";
}

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

// When the user clicks on <span> (x), close the modal
span2.onclick = function() {
    modal2.style.display = "none";
}

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

var modal2 = document.getElementById('myModal2');

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

var btn2 = document.getElementById("myBtn2");

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

var span2 = document.getElementsByClassName("close2")[0];

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

btn2.onclick = function() {
    modal2.style.display = "block";
}

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

// When the user clicks on <span> (x), close the modal
span2.onclick = function() {
    modal2.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";
    }
    if (event.target == modal2) {
        modal2.style.display = "none";
    }
}

/* The Modal (background) */
.modal {
    display: none; 
    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); 
}

/* Modal Content */
.modal-content {
    position: relative;
    background-color: #fefefe;
    margin: auto;
    padding: 0;
    border: 1px solid #888;
    width: 80%;
    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: 0.4s
}

/* Add Animation */
@-webkit-keyframes animatetop {
    from {top:-300px; opacity:0} 
    to {top:0; opacity:1}
}

@keyframes animatetop {
    from {top:-300px; opacity:0}
    to {top:0; opacity:1}
}

/* The Close Button */
.close,.close2 {
    color: white;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close:hover,
.close:focus,.close2:hover,
.close2:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}

.modal-header {
    padding: 2px 16px;
    background-color: #5cb85c;
    color: white;
}

.modal-body {padding: 2px 16px;}

.modal-footer {
    padding: 2px 16px;
    background-color: #5cb85c;
    color: white;
}

<h2>Animated Modal with Header and Footer</h2>

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

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

  <!-- Modal content -->
  <div class="modal-content">
    <div class="modal-header">
      <span class="close">&times;</span>
      <h2>Modal Hecccccccccccccader</h2>
    </div>
    <div class="modal-body">
      <p>Some text in the Modal Body</p>
      <p>Some other cccccccccccctext...</p>
    </div>
    <div class="modal-footer">
      <h3>Modal ccccccccccccccFooter</h3>
    </div>
  </div>

</div>


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

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

  <!-- Modal content -->
  <div class="modal-content">
    <div class="modal-header">
      <span class="close2">&times;</span>
      <h2>Modaldddddddddddd Header</h2>
    </div>
    <div class="modal-body">
      <p>Some textdddddddddddddddddd in the Modal Body</p>
      <p>Some otherdddddddddddddddddddd text...</p>
    </div>
    <div class="modal-footer">
      <h3>Modal Footer</h3>
    </div>
  </div>

</div>