[英]How to vertically center modal?
我想垂直居中模态。 我在谷歌上搜索了很多,但没有发现任何帮助。 这是我的代码:
function inactive(id, ths) { $("#confirmation").modal("show"); }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="modal fade bs-example-modal-sm" id="confirmation" tabindex="-1" role="dialog" aria-labelledby="mySmallModalLabel"> <div class="modal-dialog modal-sm" role="document"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span> </button> <h4 class="modal-title">Are you sure you want to inactivate it?</h4> </div> <div class="modal-body"> <div class="form-group"> <input type="text" class="form-control" name="captcha" id="cval" placeholder="enter captcha"> </div> </div> <div class="modal-footer"> <button type="button" class="btn btn-default" data-dismiss="modal">No</button> <button type="button" class="btn btn-primary" id="yes">Yes</button> </div> </div> </div> </div>
如何垂直居中?
未经测试,但你可以试试这个
.yourElement{
position: relative;
top: 50%;
transform: translateY(-50%);
}
为此有一个特定的引导类(v4.1):
将.modal-dialog-centered添加到.modal-dialog以垂直居中模式。
来源: https ://getbootstrap.com/docs/4.1/components/modal/#vertically-centered
因为它看起来像一个引导模式,所以签出这个Fiddle (jsFiddle)。
尝试
.modal-dialog {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%) !important;
}
希望这可以帮助!
通过添加位置和变换属性,您不会让它在所有宽度和设备上居中,而且一直计算它可能是一个乏味的过程。 这是通过设置“.modal-dialog”类的样式来实现的
/* Center a bootstrap modal Vertically and horizontally */
.modal-dialog {
display: flex;
justify-content: center;
align-items: center;
height: 100%;
}
/* and Viola! */
尝试这个:-
// Vertical centered modals // you can give custom class like this // var modalVerticalCenterClass = ".modal.modal-vcenter"; var modalVerticalCenterClass = ".modal"; function centerModals($element) { var $modals; if ($element.length) { $modals = $element; } else { $modals = $(modalVerticalCenterClass + ':visible'); } $modals.each( function(i) { var $clone = $(this).clone().css('display', 'block').appendTo('body'); var top = Math.round(($clone.height() - $clone.find('.modal-content').height()) / 2); top = top > 0 ? top : 0; $clone.remove(); $(this).find('.modal-content').css("margin-top", top); }); } $(modalVerticalCenterClass).on('show.bs.modal', function(e) { centerModals($(this)); }); $(window).on('resize', centerModals);
/* scroll fixes */ .modal-open .modal { padding-left: 0px !important; padding-right: 0px !important; overflow-y: scroll; } /* centering styles for jsbin */ html, body { width:100%; height:100%; } html { display:table; } body { display:table-cell; vertical-align:middle; } body > .btn { display: block; margin: 0 auto; }
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Bootstrap 3 vertically centered modal and scroll fixes</title> <meta name="description" content="Bootstrap 3 vertically centered modal and scroll fixes"> <!-- include bootstrap --> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css"> </head> <body> <!-- Button trigger modal --> <button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal"> Launch modal </button> <!-- Modal --> <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">×</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> </div> </div> </div> </div> <!-- include jQuery --> <script src="https://code.jquery.com/jquery-1.10.2.min.js"></script> <!-- include bootstrap --> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script> </body> </html>
最简单(未经跨浏览器测试,但应该没问题):
HTML:
<div class="container">
<p>Container</p>
<div class="modal">
<p>Modal</p>
</div>
</div>
CSS:
.container {
position:relative;
}
.modal {
position:absolute;
top:0;
bottom:0;
left:0;
right:0;
margin:auto;
}
这是小提琴:http: //jsfiddle.net/o9pbgnz5/
设置top:0
和bottom:0
很重要。 然后, margin-top:auto
和margin-bottom:auto
应该负责垂直居中。 在此示例中,简写“margin:auto”将其水平和垂直居中。
PS 也适用于position:fixed;
如果您在顶部 CSS 属性上使用 CSS calc() 函数,则可以垂直居中模式。 假设模态框的高度为 600px。 使用值为 50 的 vh 单位可以获得屏幕垂直高度的中点。 然后你只需要减去模态元素高度的一半。
#modal {
position: fixed;
height: 600px;
top: calc(50vh - 300px);
z-index: 100;
}
如果您使用的是引导程序 4 或更高版本,您可以简单地使用引导程序类 modal-dialog modal-dialog-centered
function inactive(id, ths) { $("#confirmation").modal("show"); }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="modal-dialog modal-dialog-centered fade bs-example-modal-sm" id="confirmation" tabindex="-1" role="dialog" aria-labelledby="mySmallModalLabel"> <div class="modal-dialog modal-sm" role="document"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span> </button> <h4 class="modal-title">Are you sure you want to inactivate it?</h4> </div> <div class="modal-body"> <div class="form-group"> <input type="text" class="form-control" name="captcha" id="cval" placeholder="enter captcha"> </div> </div> <div class="modal-footer"> <button type="button" class="btn btn-default" data-dismiss="modal">No</button> <button type="button" class="btn btn-primary" id="yes">Yes</button> </div> </div> </div> </div>
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