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2024-07-20 07:00:00

引导3模态垂直位置中心

这个问题分为两部分:

当你不知道模态的确切高度时，你如何将模态垂直地放置在中心? 是否有可能有模态居中，并有溢出:auto在模态体，但只有当模态超过屏幕高度?

我试过用这个:

.modal-dialog {
  height: 80% !important;
  padding-top:10%;
}

.modal-content {
  height: 100% !important;
  overflow:visible;
}

.modal-body {
  height: 80%;
  overflow: auto;
}

当内容远远大于垂直屏幕尺寸时，这给了我所需要的结果，但对于较小的模式内容，这几乎是不可用的。

当前回答

.modal { } .vertical-alignment-helper { display:table; height: 100%; width: 100%; } .vertical-align-center { /* To center vertically */ display: table-cell; vertical-align: middle; } .modal-content { /* Bootstrap sets the size of the modal in the modal-dialog class, we need to inherit it */ width:inherit; height:inherit; /* To center horizontally */ margin: 0 auto; } <head> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script> <link href="http://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet"/> </head> <body> <!-- Button trigger modal --> <button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">Launch demo modal</button> <!-- Modal --> <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"> <div class="vertical-alignment-helper"> <div class="modal-dialog vertical-align-center"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span> </button> <h4 class="modal-title" id="myModalLabel">Modal title</h4> </div> <div class="modal-body">...</div> <div class="modal-footer"> <button type="button" class="btn btn-default" data-dismiss="modal">Close</button> <button type="button" class="btn btn-primary">Save changes</button> </div> </div> </div> </div> </div> </body>

CSS:

.modal {
}
.vertical-alignment-helper {
    display:table;
    height: 100%;
    width: 100%;
}
.vertical-align-center {
    /* To center vertically */
    display: table-cell;
    vertical-align: middle;
}
.modal-content {
    /* Bootstrap sets the size of the modal in the modal-dialog class, we need to inherit it */
    width:inherit;
    height:inherit;
    /* To center horizontally */
    margin: 0 auto;
}

HTML:

<!-- Button trigger modal -->
<button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">Launch demo modal</button>
<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
    <div class="vertical-alignment-helper">
        <div class="modal-dialog vertical-align-center">
            <div class="modal-content">
                <div class="modal-header">
                    <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span>

                    </button>
                     <h4 class="modal-title" id="myModalLabel">Modal title</h4>

                </div>
                <div class="modal-body">...</div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                    <button type="button" class="btn btn-primary">Save changes</button>
                </div>
            </div>
        </div>
    </div>
</div>

参考:http://jsfiddle.net/rensdenobel/sRmLV/13/

2019-01-29 00:48:06

其他回答

$('#myModal').on('shown.bs.modal', function() {
    var initModalHeight = $('#modal-dialog').outerHeight(); //give an id to .mobile-dialog
    var userScreenHeight = $(document).outerHeight();
    if (initModalHeight > userScreenHeight) {
        $('#modal-dialog').css('overflow', 'auto'); //set to overflow if no fit
    } else {
        $('#modal-dialog').css('margin-top', 
        (userScreenHeight / 2) - (initModalHeight/2)); //center it if it does fit
    }
});
2013-10-11 07:00:48

它可以简单地可以固定显示:伸缩

.modal-dialog {
  margin-top: 0;
  margin-bottom: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.modal.fade .modal-dialog {
  transform: translate(0, -100%);
}

.modal.in .modal-dialog {
  transform: translate(0, 0);
}

与前缀

.modal-dialog {
  margin-top: 0;
  margin-bottom: 0;
  height: 100vh;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -webkit-flex-direction: column;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
}

.modal.fade .modal-dialog {
  -webkit-transform: translate(0, -100%);
          transform: translate(0, -100%);
}
.modal.in .modal-dialog {
  -webkit-transform: translate(0, 0);
          transform: translate(0, 0);
}
2015-12-16 10:20:02

我写的最普遍的解。动态计算对话框高度。(下一步可能是重新计算窗口大小的对话框的高度。)

JSfiddle: http://jsfiddle.net/8Fvg9/3/

// initialise on document ready
jQuery(document).ready(function ($) {
    'use strict';

    // CENTERED MODALS
    // phase one - store every dialog's height
    $('.modal').each(function () {
        var t = $(this),
            d = t.find('.modal-dialog'),
            fadeClass = (t.is('.fade') ? 'fade' : '');
        // render dialog
        t.removeClass('fade')
            .addClass('invisible')
            .css('display', 'block');
        // read and store dialog height
        d.data('height', d.height());
        // hide dialog again
        t.css('display', '')
            .removeClass('invisible')
            .addClass(fadeClass);
    });
    // phase two - set margin-top on every dialog show
    $('.modal').on('show.bs.modal', function () {
        var t = $(this),
            d = t.find('.modal-dialog'),
            dh = d.data('height'),
            w = $(window).width(),
            h = $(window).height();
        // if it is desktop & dialog is lower than viewport
        // (set your own values)
        if (w > 380 && (dh + 60) < h) {
            d.css('margin-top', Math.round(0.96 * (h - dh) / 2));
        } else {
            d.css('margin-top', '');
        }
    });

});
2014-06-03 13:59:12

最简单的解决方案是在页面顶部添加模态对话框样式，或者用下面的代码导入css:

<style>
    .modal-dialog {
    position:absolute;
    top:50% !important;
    transform: translate(0, -50%) !important;
    -ms-transform: translate(0, -50%) !important;
    -webkit-transform: translate(0, -50%) !important;
    margin:auto 50%;
    width:40%;
    height:40%;
    }
</style>

模态声明:

    <div class="modal fade" id="exampleModalCenter" tabindex="-1" role="dialog" aria-labelledby="exampleModalCenterTitle" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="exampleModalLongTitle">Modal title</h5>
                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                    <span aria-hidden="true">&times;</span>
                </button>
            </div>
            <div class="modal-body">
                ...
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                <button type="button" class="btn btn-primary">Save changes</button>
            </div>
        </div>
    </div>
</div>

情态用法:

<a data-toggle="modal" data-target="#exampleModalCenter">
 ...
</a>
2019-01-12 21:32:18

我的解决方案

.modal-dialog-center {
    margin-top: 25%;
}

    <div id="waitForm" class="modal">
        <div class="modal-dialog modal-dialog-center">
            <div class="modal-content">
                <div class="modal-header">
                    <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
                    <h4 id="headerBlock" class="modal-title"></h4>
                </div>
                <div class="modal-body">
                    <span id="bodyBlock"></span>
                    <br/>
                    <p style="text-align: center">
                        <img src="@Url.Content("~/Content/images/progress-loader.gif")" alt="progress"/>
                    </p>   
                </div>
            </div>
        </div>
    </div>
2013-10-09 14:40:22

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