在可滚动模态中具有固定位置的Div

Question

在可滚动模态中具有固定位置的Div

nep*_*une 4 html css jquery twitter-bootstrap

我有一个带有滚动的模态的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.

我试过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
    });
});

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@import url( 'https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css' );

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<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 -->

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我怎么能解决那个div？

Answer 1

hun*_*tar 5

您需要将DIV移动到模态之外.

固定定位与祖先元素应用于其时的viewport 除外相关transform..modal-dialog已经transform应用于它创建了一个新的上下文来定位DIV(这就是你的DIV留在模态内部的原因).

CSS定位 - MDN

Answer 2

nep*_*une 2

我设法根据@Shiplo Rahman 和@Dejan.S 的回答解决了该问题

删除了 modal-header，将所有内容放入 modal-body 中，并执行此处描述的 jquery 解决方法：jQuery：当浏览器滚动到它时修复 div

$('.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();
});

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    @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;
 }

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<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 -->

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这是来源： http: //jsfiddle.net/roahda03/21/

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