多个模态无法正常工作

时间：2016-10-10 16:57:23

标签： javascript html css modal-dialog

如果之前已经回答过，我很抱歉，但我已经盯着这段代码好几个小时了，不知道为什么它的行为方式如此。

我有一个页面上有3个模态窗口，我正在使用javascript来触发。现在只有一个模态窗口，它工作正常，但我尝试添加两个窗口，第一个窗口的第一个链接触发第三个模态，然后关闭功能不再工作。

这是我的代码：

CSS：

<style>
/* 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 */
}

.modal1 {
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 */
}

.modal2 {
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/Box */
.modal-content {
background-color: #fefefe;
margin: 15% auto; /* 15% from the top and centered */
padding: 20px;
border: 1px solid #888;
width: 80%; /* Could be more or less, depending on screen size */
}

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

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

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

/* Modal Body */
.modal-body {padding: 2px 16px;}

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

/* 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}
}
</style>

HTML＆amp;使用Javascript：

<!-- Trigger/Open The Modal -->
<a href="#" id="myBtn">Open Modal 1</a>
<a href="#" id="myBtn1">Open Modal 2</a>
<a href="#" id="myBtn2">Open Modal 3</a>

<!-- modal 1 -->
<script type="text/javascript">
            function modalFun(){
                // 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() {
                    console.log(modal);
                    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";
                    }
                }

                     // Get the modal
                var modal = document.getElementById('myModal1');

                // Get the button that opens the modal
                var btn = document.getElementById("myBtn1");


                // 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() {
                    console.log(modal1);
                    modal1.style.display = "block";
                }

                // When the user clicks on <span> (x), close the modal
                span.onclick = function() {
                    modal1.style.display = "none";
                }

                // When the user clicks anywhere outside of the modal, close it
                window.onclick = function(event) {
                    if (event.target == modal1) {
                        modal1.style.display = "none";
                    }
                }

                     // Get the modal
                var modal = document.getElementById('myModal2');

                // Get the button that opens the modal
                var btn = document.getElementById("myBtn2");


                // 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() {
                    console.log(modal2);
                    modal2.style.display = "block";
                }

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

                // When the user clicks anywhere outside of the modal, close it
                window.onclick = function(event) {
                    if (event.target == modal2) {
                        modal2.style.display = "none";
                    }
                }
            }

            window.onload=modalFun;
       </script>

<!-- Modal 1 -->
<div id="myModal" class="modal">

<!-- Modal content -->
<div class="modal-content">
<div class="modal-header">
<span class="close">×</span>
<h2>Modal Header</h2>
</div>
<div class="modal-body">
<p>Some text in the Modal Body</p>
<p>Some other text...</p>
</div>
<div class="modal-footer">
<h3>Modal Footer</h3>
</div>
</div>

</div>

<!-- Modal 1 -->

<!-- Modal 2 -->

<!-- The Modal -->
<div id="myModal1" class="modal1">

<!-- Modal content -->
<div class="modal-content">
<div class="modal-header">
<span class="close">×</span>
<h2>Modal Header2</h2>
</div>
<div class="modal-body">
<p>Some text in the Modal Body</p>
<p>Some other text...</p>
</div>
<div class="modal-footer">
<h3>Modal Footer</h3>
</div>
</div>

</div>

<!-- Modal 2 -->

<!-- Modal 3 -->

<!-- The Modal -->
<div id="myModal2" class="modal2">

<!-- Modal content -->
<div class="modal-content">
<div class="modal-header">
<span class="close">×</span>
<h2>Modal Header3</h2>
</div>
<div class="modal-body">
<p>Some text in the Modal Body</p>
<p>Some other text...</p>
</div>
<div class="modal-footer">
<h3>Modal Footer</h3>
</div>
</div>

</div>

<!-- Modal 3 -->

3 个答案:

答案 0 :(得分：1)

var span = document.getElementsByClassName("close")[0];每次都会返回文档中的第一个.close。您需要获取与您的各个模态匹配的.close。 querySelector是一个很好的工具。尝试

var span = modal.querySelector('.close');

获得正确的。您还使用.onclick设置了事件处理程序。最好使用addEventListener：

span.addEventListener('click', function() {
  modal.style.display = 'none';
});

此外，您还要复制大量代码并更改modal所指的内容。将该功能转移到一个功能中会更好。

function initializeModal(modalID, buttonID) {
  // Get the modal element
  var modal = document.getElementById(modalID);

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

  // Get the <span> element that closes the modal
  var span = modal.querySelector('.close');

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

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

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

将所有这些结合在一起：

＆＃13;
＆＃13; 
function initializeModal(modalID, buttonID) {
  // Get the modal element
  var modal = document.getElementById(modalID);

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

  // Get the <span> element that closes the modal
  var span = modal.querySelector('.close');

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

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

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

window.addEventListener('load', function() {
  initializeModal('myModal', 'myBtn');
  initializeModal('myModal1', 'myBtn1');
  initializeModal('myModal2', 'myBtn2');
});
＆＃13; 
/* Reuse this class for each modal */

.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/Box */

.modal-content {
  background-color: #fefefe;
  margin: 15% auto;
  /* 15% from the top and centered */
  padding: 20px;
  border: 1px solid #888;
  width: 80%;
  /* Could be more or less, depending on screen size */
}
/* The Close Button */

.close {
  color: #aaa;
  float: right;
  font-size: 28px;
  font-weight: bold;
}
.close:hover,
.close:focus {
  color: black;
  text-decoration: none;
  cursor: pointer;
}
/* Modal Header */

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

.modal-body {
  padding: 2px 16px;
}
/* Modal Footer */

.modal-footer {
  padding: 2px 16px;
  background-color: #5cb85c;
  color: white;
}
/* 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
  }
}
＆＃13; 
<!-- Trigger/Open The Modal -->
<a href="#" id="myBtn">Open Modal 1</a>
<a href="#" id="myBtn1">Open Modal 2</a>
<a href="#" id="myBtn2">Open Modal 3</a>

<!-- Modal 1 -->
<div id="myModal" class="modal">

  <!-- Modal content -->
  <div class="modal-content">
    <div class="modal-header">
      <span class="close">×</span>
      <h2>Modal Header</h2>
    </div>
    <div class="modal-body">
      <p>Some text in the Modal Body</p>
      <p>Some other text...</p>
    </div>
    <div class="modal-footer">
      <h3>Modal Footer</h3>
    </div>
  </div>

</div>

<!-- Modal 2 -->
<div id="myModal1" class="modal">

  <!-- Modal content -->
  <div class="modal-content">
    <div class="modal-header">
      <span class="close">×</span>
      <h2>Modal Header2</h2>
    </div>
    <div class="modal-body">
      <p>Some text in the Modal Body</p>
      <p>Some other text...</p>
    </div>
    <div class="modal-footer">
      <h3>Modal Footer</h3>
    </div>
  </div>

</div>

<!-- Modal 3 -->
<div id="myModal2" class="modal">
  <!-- Modal content -->
  <div class="modal-content">
    <div class="modal-header">
      <span class="close">×</span>
      <h2>Modal Header3</h2>
    </div>
    <div class="modal-body">
      <p>Some text in the Modal Body</p>
      <p>Some other text...</p>
    </div>
    <div class="modal-footer">
      <h3>Modal Footer</h3>
    </div>
  </div>
</div>
＆＃13;
＆＃13;
＆＃13;

答案 1 :(得分：0)

您的代码完全没有问题，您正在使用相同的函数重新声明变量。 因为btn绑定到函数末尾的最后一个模态 使用不同的变量，如btn，btn1，btn2

另外 var span = document.getElementsByClassName("close")[0]; 这将始终绑定到第一个，您必须使用不同的ID作为关闭按钮..

我建议你使用bootstrap-modal你的代码会变得更干净 这不是一个好方法

这是一个工作小提琴 https://jsfiddle.net/c9ftdgum/

答案 2 :(得分：0)

嘿，我为此苦苦挣扎了几天， 我知道我的模态有效，因为它们在单个网页上测试时按预期执行。 当我将所有 3 个模态组合到一个网页时，它都坏了。所以这就是我经过几天的测试和调试后发现的。 MODAL 的位置很重要！！

首先，您的模态触发器按钮可以全部放置在一个父 div 中，但是模态应该在该父 div 之外定义。 前

<div class="wrapper">
    <a class="btn btn-primary btn-sm" role='button'data-bs-toggle="modal" data-bs-target="#modal1">Modal 1</a>
    <a class="btn btn-primary btn-sm" role='button'data-bs-toggle="modal" data-bs-target="#modal2">Modal 2</a>
    <a class="btn btn-primary btn-sm" role='button'data-bs-toggle="modal" data-bs-target="#modal3">Modal 3</a>
</div>

！！重要部分！！

现在我们可以按照按钮的相反顺序定义模态。 所以我们定义的第一个模态应该是最后一个按钮（#modal3），然后中间按钮模态将被定义（#modal2），我们将定义的最后一个模态将是第一个按钮。

<div class="modal fade" id="modal3" tabindex="-1" aria-hidden="true">
...
</div>
<div class="modal fade" id="modal2" tabindex="-1" aria-hidden="true">
...
</div>
<div class="modal fade" id="modal1" tabindex="-1" aria-hidden="true">
...
</div>

IDK 为什么顺序很重要但它有效。 因此，如果您确定模态触发器和模态的代码是正确的 但是当您单击模态按钮时屏幕会消失， 试试这个。 希望它可以帮助某人并节省无数小时的调试时间。

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