我需要覆盖显示以上的第一个模式,而不是在后面。

$('#openBtn').click(function(){ $('#myModal').modal({show:true}) }); <a data-toggle="modal" href="#myModal" class="btn btn-primary">Launch modal</a> <div class="modal" id="myModal"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button> <h4 class="modal-title">Modal title</h4> </div><div class="container"></div> <div class="modal-body"> Content for the dialog / modal goes here. <br> <br> <br> <br> <br> <a data-toggle="modal" href="#myModal2" class="btn btn-primary">Launch modal</a> </div> <div class="modal-footer"> <a href="#" data-dismiss="modal" class="btn">Close</a> <a href="#" class="btn btn-primary">Save changes</a> </div> </div> </div> </div> <div class="modal" id="myModal2" data-backdrop="static"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button> <h4 class="modal-title">Second Modal title</h4> </div><div class="container"></div> <div class="modal-body"> Content for the dialog / modal goes here. </div> <div class="modal-footer"> <a href="#" data-dismiss="modal" class="btn">Close</a> <a href="#" class="btn btn-primary">Save changes</a> </div> </div> </div> </div> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.0.0/css/bootstrap.min.css" /> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.0.0/js/bootstrap.min.js"></script>

我试图改变。modal- background的z索引,但它变得一团糟。

在某些情况下,我在同一页上有两个以上的情态动词。


当前回答

尝试在bootply上将以下内容添加到JS中

$('#myModal2').on('show.bs.modal', function () {  
$('#myModal').css('z-index', 1030); })

$('#myModal2').on('hidden.bs.modal', function () {  
$('#myModal').css('z-index', 1040); })

解释:

在摆弄了属性之后(使用Chrome的开发工具),我意识到任何低于1031的z-index值都会把东西放在背景后面。

所以通过使用bootstrap的模态事件句柄,我将z-index设置为1030。如果显示#myModal2,如果隐藏#myModal2,则将z-index设置为1040。

Demo

其他回答

这段代码非常适合用于引导4。其他代码中的问题是如何选择模态背景。这将是更好的,如果你使用jQuery的下一个选择在实际的模态已经显示。

(文档)。(“show.bs美元。模态”、“。Modal ', function () { var zIndex = 1040 + (10 * $('.modal').length); Var模型= $(this); model.css (z - index, zIndex); 模型。attr (data-z-index, zIndex); }); (文档)。(“shown.bs美元。模态”、“。Modal ', function () { Var模型= $(this); var zIndex = model.attr('data-z-index'); model.next('.modal- background .show').css('z-index', zIndex - 1); });

基于这个答案的例子,我更新了它,以支持引导3和4,并修复了评论中提到的所有问题。因为我也注意到它们,因为我有一些模态有一个超时和自动关闭。

它将不能与bootstrap 5一起工作。引导5不存储b。Modal对象不再使用node.data('bs.modal')。

我建议全屏查看代码片段。

使用与前面提到的答案相同的例子引导3,只是对话4被修改了。

!function () { var z = "bs.modal.z-index.base", re_sort = function (el) { Array.prototype.slice.call($('.modal.show,.modal.in').not(el)) .sort(function (a, b) { // sort by z-index lowest to highest return +a.style.zIndex - +b.style.zIndex }) .forEach(function (el, idx) { // re-set the z-index based on the idx el.style.zIndex = $(el).data(z) + (2 * idx); const b = $(el).data('bs.modal')._backdrop || $(el).data("bs.modal").$backdrop; if (b) { $(b).css("z-index", +el.style.zIndex - 1); } }); }; $(document).on('show.bs.modal', '.modal', function (e) { // removing the currently set zIndex if any this.style.zIndex = ''; /* * should be 1050 always, if getComputedStyle is not supported use 1032 as variable... * * see https://getbootstrap.com/docs/4.0/layout/overview/#z-index and adjust the * other values to higher ones, if required * * Bootstrap 3: https:////netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.css .modal { [...] z-index: 1050; [...] } .modal-backdrop { [...] z-index: 1040; [...] } * Bootstrap 4: https://getbootstrap.com/docs/4.0/layout/overview/#z-index * * * lowest value which doesn't interfer with other bootstrap elements * since we manipulate the z-index of the backdrops too we need two for each modal * using 1032 you could open up to 13 modals without overlapping popovers */ if (!$(this).data(z)) { let def = +getComputedStyle(this).zIndex; // 1050 by default def = 1032; $(this).data(z, def); } // resort all others, except this re_sort(this); // 2 is fine 1 layer for the modal, 1 layer for the backdrop var zIndex = $(this).data(z) + (2 * $('.modal.show,.modal.in').not(this).length); e.target.style.zIndex = zIndex; /* * Bootstrap itself stores the var using jQuery data property the backdrop * is present there, even if it may not be attached to the DOM * * If it is not present, wait for it, using requestAnimationFrame loop */ const waitForBackdrop = function () { try { // can fail to get the config if the modal is opened for the first time const config = $(this).data('bs.modal')._config || $(this).data('bs.modal').options; if (config.backdrop != false) { const node = $(this).data('bs.modal')._backdrop || $(this).data("bs.modal").$backdrop; if (node) { $(node).css('z-index', +this.style.zIndex - 1); } else { window.requestAnimationFrame(waitForBackdrop); } } } catch (e) { window.requestAnimationFrame(waitForBackdrop); } }.bind(this); waitForBackdrop(); }); $(document).on("shown.bs.modal", ".modal", function () { re_sort(); }); $(document).on('hidden.bs.modal', '.modal', function (event) { this.style.zIndex = ''; // when hidden, remove the z-index if (this.isConnected) { const b = $(this).data('bs.modal')._backdrop || $(this).data("bs.modal").$backdrop; if (b) { $(b).css("z-index", ''); } } re_sort(); // if still backdrops are present at dom - readd modal-open if ($('.modal-backdrop.show,.modal-backdrop.in').length) $(document.body).addClass("modal-open"); }) }(); /* crazy batman newspaper spinny thing */ .rotate { transform:rotate(180deg); transition:all 0.25s; } .rotate.in { transform:rotate(1800deg); transition:all 0.75s; } <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script> <script src="http://netdna.bootstrapcdn.com/bootstrap/3.1.0/js/bootstrap.min.js"></script> <link href="http://netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="stylesheet"/> <h2>Stacked Bootstrap Modal Example.</h2> <a data-toggle="modal" href="#myModal" class="btn btn-primary">Launch modal</a> <div class="modal fade" id="myModal"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button> <h4 class="modal-title">Modal 1</h4> </div> <div class="container"></div> <div class="modal-body">Content for the dialog / modal goes here. <br> <br> <br> <p>more content</p> <br> <br> <br> <a data-toggle="modal" href="#myModal2" class="btn btn-primary">Launch modal</a> </div> <div class="modal-footer"> <a href="#" data-dismiss="modal" class="btn">Close</a> <a href="#" class="btn btn-primary">Save changes</a> </div> </div> </div> </div> <div class="modal fade rotate" id="myModal2"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button> <h4 class="modal-title">Modal 2</h4> </div> <div class="container"></div> <div class="modal-body">Content for the dialog / modal goes here. <br> <br> <p>come content</p> <br> <br> <br> <a data-toggle="modal" href="#myModal3" class="btn btn-primary">Launch modal</a> </div> <div class="modal-footer"> <a href="#" data-dismiss="modal" class="btn">Close</a> <a href="#" class="btn btn-primary">Save changes</a> </div> </div> </div> </div> <div class="modal fade" id="myModal3"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button> <h4 class="modal-title">Modal 3</h4> </div> <div class="container"></div> <div class="modal-body">Content for the dialog / modal goes here. <br> <br> <br> <br> <br> <a data-toggle="modal" href="#myModal4" class="btn btn-primary">Launch modal</a> </div> <div class="modal-footer"> <a href="#" data-dismiss="modal" class="btn">Close</a> <a href="#" class="btn btn-primary">Save changes</a> </div> </div> </div> </div> <div class="modal fade" id="myModal4"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button> <h4 class="modal-title">Modal 4</h4> </div> <div class="container"></div> <div class="modal-body"> <button onclick="$('#myModal').modal('hide');" class="btn btn-primary">hide #1</button> <button onclick="$('#myModal').modal('show');" class="btn btn-primary">show #1</button> <br> <button onclick="$('#myModal2').modal('hide');" class="btn btn-primary">hide #2</button> <button onclick="$('#myModal2').modal('show');" class="btn btn-primary">show #2</button> <br> <button onclick="$('#myModal3').modal('hide');" class="btn btn-primary">hide #3</button> <button onclick="$('#myModal3').modal('show');" class="btn btn-primary">show #3</button> </div> <div class="modal-footer"> <a href="#" data-dismiss="modal" class="btn">Close</a> <a href="#" class="btn btn-primary">Save changes</a> </div> </div> </div> </div>

Bootstrap 4 (see Bootstrap 3 snippet for commented code) !function () { var z = "bs.modal.z-index.base", re_sort = function (el) { Array.prototype.slice.call($('.modal.show,.modal.in').not(el)) .sort(function (a, b) { return +a.style.zIndex - +b.style.zIndex }) .forEach(function (el, idx) { el.style.zIndex = $(el).data(z) + (2 * idx); const b = $(el).data('bs.modal')._backdrop || $(el).data("bs.modal").$backdrop; if (b) { $(b).css("z-index", +el.style.zIndex - 1); } }); }; $(document).on('show.bs.modal', '.modal', function (e) { this.style.zIndex = ''; if (!$(this).data(z)) { let def = +getComputedStyle(this).zIndex; def = 1032; $(this).data(z, def); } re_sort(this); var zIndex = $(this).data(z) + (2 * $('.modal.show,.modal.in').not(this).length); e.target.style.zIndex = zIndex; const waitForBackdrop = function () { try { const config = $(this).data('bs.modal')._config || $(this).data('bs.modal').options; if (config.backdrop != false) { const node = $(this).data('bs.modal')._backdrop || $(this).data("bs.modal").$backdrop; if (node) { $(node).css('z-index', +this.style.zIndex - 1); } else { window.requestAnimationFrame(waitForBackdrop); } } } catch (e) { window.requestAnimationFrame(waitForBackdrop); } }.bind(this); waitForBackdrop(); }); $(document).on("shown.bs.modal", ".modal", function () { re_sort(); }); $(document).on('hidden.bs.modal', '.modal', function (event) { this.style.zIndex = ''; if (this.isConnected) { const b = $(this).data('bs.modal')._backdrop || $(this).data("bs.modal").$backdrop; if (b) { $(b).css("z-index", ''); } } re_sort(); if ($('.modal-backdrop.show,.modal-backdrop.in').length) $(document.body).addClass("modal-open"); }) }(); // creates dynamic modals i used this for stuff like // `enterSomething('stuff','to','display').then(...)` !function() { let a = (i, a) => Array.prototype.forEach.call(a, (e) => $('#' + i + '-modal').find('.modal-body').append(e)), b = function () { $(this).remove() }, c = (i, a) => Array.prototype.forEach.call(a, (e) => $('#' + i + '-modal-text-container').append(e)), r = () => 'dialog-' + (Date.now() + '-' + Math.random()).replace('.', '-'); this.createModal = function createModal() { let id = r(); $(document.body).append('<div class="modal fade" tabindex="-1" role="dialog" data-backdrop="static" aria-hidden="true" id="' + id + '-modal"><div class="modal-dialog d-flex modal-xl"><div class="modal-content align-self-stretch" style="overflow: hidden; max-height: -webkit-fill-available;"><div class="modal-header py-1"><h5 class="modal-header-text p-0 m-0"></h5><button id="' + id + '-modal-btn-close" type="button" tabindex="-1" class="close" data-dismiss="modal" aria-label="Close" title="Close"><span aria-hidden="true">&times;</span></button></div><div class="modal-body py-2"></div><div class="modal-footer py-1"><button type="button" class="btn btn-primary btn-sm" id="' + id + '-modal-btn-ok">Okay</button></div></div></div></div>'); $('#' + id + '-modal-btn-ok').on('click', () => $('#' + id + '-modal').modal('hide')); $('#' + id + '-modal').on('shown.bs.modal', () => $('#' + id + '-modal-btn-ok').focus()).on('hidden.bs.modal', b).modal('show'); $('#' + id + '-modal').find(".modal-header-text").html("Title"); a(id, arguments); return new Promise((r) => $('#' + id + '-modal').on('hide.bs.modal', () => r())); } }(); function another() { createModal( $("<button class='btn mx-1'>Another...</button>").on("click", another), $("<button class='btn mx-1'>Close lowest</button>").on("click", closeLowest), $("<button class='btn mx-1'>Bring lowest to front</button>").on("click", lowestToFront), $("<p>").text($(".modal.show,.modal.in").length) ).then(() => console.log("modal closed")); // only for this example: $(".modal").last().css('padding-top', ($(".modal.show,.modal.in").length * 20) +'px'); } function closeLowest() { $(Array.prototype.slice.call($('.modal.show,.modal.in')) .sort(function (a, b) { // sort by z-index lowest to highest return +a.style.zIndex - +b.style.zIndex })).first().modal('hide'); } function lowestToFront() { $(Array.prototype.slice.call($('.modal.show,.modal.in')) .sort(function (a, b) { // sort by z-index lowest to highest return +a.style.zIndex - +b.style.zIndex })).first().trigger('show.bs.modal'); } another(); <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous"> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script> <p>Use inspecter to check z-index values</p> <button class="btn btn-outline-primary" onclick="another()">Click!</button>

Bootstrap 4.5的简单解决方案

.modal.fade {
  background: rgba(0, 0, 0, 0.5);
}

.modal-backdrop.fade {
  opacity: 0;
}

我意识到一个答案已经被接受,但我强烈建议不要破解bootstrap来解决这个问题。

通过连接show .bs.modal和hidden.bs.modal事件处理程序并在那里调整z-index,可以很容易地达到同样的效果。

下面是一个工作示例

更多信息可以在这里找到。

这个解决方案自动工作于任意深度的堆栈模态。

脚本源代码:

$(document).ready(function() {

    $('.modal').on('hidden.bs.modal', function(event) {
        $(this).removeClass( 'fv-modal-stack' );
        $('body').data( 'fv_open_modals', $('body').data( 'fv_open_modals' ) - 1 );
    });

    $('.modal').on('shown.bs.modal', function (event) {
        // keep track of the number of open modals
        if ( typeof( $('body').data( 'fv_open_modals' ) ) == 'undefined' ) {
            $('body').data( 'fv_open_modals', 0 );
        }

        // if the z-index of this modal has been set, ignore.
        if ($(this).hasClass('fv-modal-stack')) {
            return;
        }

        $(this).addClass('fv-modal-stack');
        $('body').data('fv_open_modals', $('body').data('fv_open_modals' ) + 1 );
        $(this).css('z-index', 1040 + (10 * $('body').data('fv_open_modals' )));
        $('.modal-backdrop').not('.fv-modal-stack').css('z-index', 1039 + (10 * $('body').data('fv_open_modals')));
        $('.modal-backdrop').not('fv-modal-stack').addClass('fv-modal-stack'); 

    });        
});

解决方案灵感来自@YermoLamers和@Ketwaroo的回答。

背景z指数修正 这个解决方案使用setTimeout,因为当事件show.bs.modal被触发时,.modal- background不会被创建。

$(document).on('show.bs.modal', '.modal', function() {
  const zIndex = 1040 + 10 * $('.modal:visible').length;
  $(this).css('z-index', zIndex);
  setTimeout(() => $('.modal-backdrop').not('.modal-stack').css('z-index', zIndex - 1).addClass('modal-stack'));
});

这适用于页面上创建的每个.modal(即使是动态模态) 背景瞬间覆盖了之前的模式

例子jsfiddle

z - index 如果你不喜欢硬编码的z指数,你可以计算页面上的最高z指数,如下所示:

const zIndex = 10 +
  Math.max(...Array.from(document.querySelectorAll('*')).map((el) => +el.style.zIndex));

滚动条修正 如果页面上的某个模态超出了浏览器的高度,那么关闭第二个模态时就不能在其中滚动。要解决这个问题,添加:

$(document).on('hidden.bs.modal', '.modal',
  () => $('.modal:visible').length && $(document.body).addClass('modal-open'));

版本 这个解决方案是用3.1.0 - 3.3.5引导程序测试的