在可滚动模态中具有固定位置的Div

时间：2017-01-30 13:39:59

标签： jquery html css twitter-bootstrap

我在一个带有滚动的模态中有一个div，它应该具有相对于浏览器窗口的固定位置，并且不应该使用模态滚动。

我尝试了position:fixed，但它不起作用。在这里你可以看到它的上下文中的问题：

$('.launchConfirm').on('click', function (e) {
    $('#confirm').modal({
        show: true
    });
});
@import url( 'https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css' );
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js"></script>
<div class="page-container">
    <div class="container">
        <br />
        <button type="button" class="btn launchConfirm">Open modal</button>
    </div>
</div>
<div class="modal fade" id="confirm">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span>
                </button>
                 <h4 class="modal-title">Modal title</h4>

            </div>
            <div class="modal-body">
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <div style="position:fixed;top:40px;left:10px;background-color:red">This div should be fixed<br>and should not scroll away.</div>
            </div>
            <div class="modal-footer">
                some random buttons
            </div>
        </div>
        <!-- /.modal-content -->
    </div>
    <!-- /.modal-dialog -->
</div>
<!-- /.modal -->

我怎么能修复那个div？

5 个答案:

答案 0 :(得分：5)

您需要将DIV移到模态之外。

当祖先元素应用了viewport时，固定定位与transform 除相关。 .modal-dialog已应用transform，它会创建一个新的上下文来定位DIV（这就是为什么你的DIV会保留在模态中）。

CSS Positioning - MDN

答案 1 :(得分：3)

你可以这样使用。

Foo[B]#format(value: B)
$('.launchConfirm').on('click', function (e) {
    $('#confirm').modal({
        show: true
    });
});
@import url( 'https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css' );
.modal-open .modal {
   overflow: hidden;
 }
 .modal-body {
   height: calc(100vh - 126px);
   overflow-y:scroll;
 }

答案 2 :(得分：1)

我设法根据@Shiplo Rahman和@ Dejan.S的答案解决了这个问题。

删除了modal-header，将所有内容放在modal-body中并执行此处描述的jquery解决方法：jQuery: Fix div when browser scrolls to it

＆＃13;
＆＃13; 
$('.launchConfirm').on('click', function (e) {
    $('#confirm').modal({
        show: true
    });
});

jQuery(function($) {
  function fixDiv() {
    var $cache = $('#getFixed');
    if ($('.modal-body').scrollTop() > 50)
    {
    $cache.css({
        'position': 'fixed',
        'top': '0px',
        'left': '25px',
        'width': '600px'
      });
    }
    else
      $cache.css({
        'position': 'relative',
        'top': 'auto',
        'left': '10px'
      });
  }
  $('.modal-body').scroll(fixDiv);
  fixDiv();
});
＆＃13; 
    @import url( 'https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css' );
.modal-open .modal {
   //overflow: hidden;
 }
 .modal-body {
   height: calc(100vh - 126px);
   overflow-y: scroll;
 }
 
 #getFixed {
   position: relative;
   left: 10px;
   width: 600px;
 }
＆＃13; 
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js"></script>


<div class="page-container">
    <div class="container">
        <br />
        <button type="button" class="btn launchConfirm">Open modal</button>
    </div>
</div>
<div class="modal fade" id="confirm">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-body" id="confirm2">
            <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span>
                </button>
                 <h4 class="modal-title">Modal title</h4>
                 <div id="getFixed" style="background-color:red">This div should be fixed<br>and should not scroll away.</div>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
                <p>One fine body&hellip;</p>
            </div>
            <div class="modal-footer">
                some random buttons
            </div>
        </div>
        <!-- /.modal-content -->
    </div>
    <!-- /.modal-dialog -->
</div>
<!-- /.modal -->
＆＃13;
＆＃13;
＆＃13;

以下是来源： http://jsfiddle.net/roahda03/21/

答案 3 :(得分：0)

在模态体中，你应该设置一个最大高度，然后告诉溢出，所以：

.modal-body{
    overflow: auto;
    max-height: 200px;
}

答案 4 :(得分：0)

要在模式中具有固定的div，请执行以下操作：

<div class="modal fade" role="dialog">

    <div class="fixed-div">
        *your fixed div here...
        it can even be your .modal-header div*
    </div>

    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-body">

CSS：

.fixed-div {
    width: 100%;
    position: fixed;
    z-index: 1051; /* anything above 1050*/
    background: #fff;
    box-shadow: 0 5px 20px 4px rgba(0,0,0,.1);
}

.fixed-div也可以是您的.modal-header； 但是.modal-header必须在.modal之后，而不是.modal-content

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