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

对我来说,这些简单的scss规则非常有效:

.modal.show{
  z-index: 1041;
  ~ .modal.show{
    z-index: 1043;
  }
}
.modal-backdrop.show {
  z-index: 1040;
  + .modal-backdrop.show{
    z-index: 1042;
  }
}

如果这些规则导致错误的模态在你的情况下,要么改变你的模态div的顺序,或者在上面的scss中改变(奇数)为(偶数)。

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

看看这个!这个解决方案解决了我的问题,几个简单的CSS行:

.modal:nth-of-type(even) {
z-index: 1042 !important;
}
.modal-backdrop.in:nth-of-type(even) {
    z-index: 1041 !important;
}

这是我找到它的地方的链接:Bootply 只要确保需要出现在顶部的.modual在HTML代码中处于第二,这样CSS就可以发现它是“偶数”。

更新日期:2019年1月22日,13.41 我通过jhay优化了解决方案,它还支持关闭和打开相同或不同的对话框,例如,从一个细节数据向前或向后跨步到另一个细节数据。

(function ($, window) {
'use strict';

var MultiModal = function (element) {
    this.$element = $(element);
    this.modalIndex = 0;
};

MultiModal.BASE_ZINDEX = 1040;

/* Max index number. When reached just collate the zIndexes */
MultiModal.MAX_INDEX = 5;

MultiModal.prototype.show = function (target) {
    var that = this;
    var $target = $(target);

    // Bootstrap triggers the show event at the beginning of the show function and before
    // the modal backdrop element has been created. The timeout here allows the modal
    // show function to complete, after which the modal backdrop will have been created
    // and appended to the DOM.

    // we only want one backdrop; hide any extras
    setTimeout(function () {
        /* Count the number of triggered modal dialogs */
        that.modalIndex++;

        if (that.modalIndex >= MultiModal.MAX_INDEX) {
            /* Collate the zIndexes of every open modal dialog according to its order */
            that.collateZIndex();
        }

        /* Modify the zIndex */
        $target.css('z-index', MultiModal.BASE_ZINDEX + (that.modalIndex * 20) + 10);

        /* we only want one backdrop; hide any extras */
        if (that.modalIndex > 1) 
            $('.modal-backdrop').not(':first').addClass('hidden');

        that.adjustBackdrop();
    });

};

MultiModal.prototype.hidden = function (target) {
    this.modalIndex--;
    this.adjustBackdrop();

    if ($('.modal.in').length === 1) {

        /* Reset the index to 1 when only one modal dialog is open */
        this.modalIndex = 1;
        $('.modal.in').css('z-index', MultiModal.BASE_ZINDEX + 10);
        var $modalBackdrop = $('.modal-backdrop:first');
        $modalBackdrop.removeClass('hidden');
        $modalBackdrop.css('z-index', MultiModal.BASE_ZINDEX);

    }
};

MultiModal.prototype.adjustBackdrop = function () {        
    $('.modal-backdrop:first').css('z-index', MultiModal.BASE_ZINDEX + (this.modalIndex * 20));
};

MultiModal.prototype.collateZIndex = function () {

    var index = 1;
    var $modals = $('.modal.in').toArray();


    $modals.sort(function(x, y) 
    {
        return (Number(x.style.zIndex) - Number(y.style.zIndex));
    });     

    for (i = 0; i < $modals.length; i++)
    {
        $($modals[i]).css('z-index', MultiModal.BASE_ZINDEX + (index * 20) + 10);
        index++;
    };

    this.modalIndex = index;
    this.adjustBackdrop();

};

function Plugin(method, target) {
    return this.each(function () {
        var $this = $(this);
        var data = $this.data('multi-modal-plugin');

        if (!data)
            $this.data('multi-modal-plugin', (data = new MultiModal(this)));

        if (method)
            data[method](target);
    });
}

$.fn.multiModal = Plugin;
$.fn.multiModal.Constructor = MultiModal;

$(document).on('show.bs.modal', function (e) {
    $(document).multiModal('show', e.target);
});

$(document).on('hidden.bs.modal', function (e) {
    $(document).multiModal('hidden', e.target);
});}(jQuery, window));

终于解决了。我对它进行了多种测试,效果很好。

以下是所有遇到同样问题的人的解决方案: 修改Modal.prototype.show函数(在bootstrap.js或modal.js中)

来自:

if (transition) {
   that.$element[0].offsetWidth // force reflow
}   

that.$element
   .addClass('in')
   .attr('aria-hidden', false)

that.enforceFocus()

TO:

if (transition) {
    that.$element[0].offsetWidth // force reflow
}

that.$backdrop
   .css("z-index", (1030 + (10 * $(".modal.fade.in").length)))

that.$element
   .css("z-index", (1040 + (10 * $(".modal.fade.in").length)))
   .addClass('in')
   .attr('aria-hidden', false)

that.enforceFocus()

这是我发现的最好的方法:检查打开了多少个模态,并将模态和背景的z-index更改为更高的值。