其他的解决方案在开箱即用时对我不起作用。我想可能是因为我使用的是Bootstrap(3.3.2)的最新版本....覆盖层出现在模态对话框的顶部。

我重构了一些代码，并注释掉了调整模式背景的部分。这解决了问题。

    var $body = $('body');
    var OPEN_MODALS_COUNT = 'fv_open_modals';
    var Z_ADJUSTED = 'fv-modal-stack';
    var defaultBootstrapModalZindex = 1040;

    // keep track of the number of open modals                   
    if ($body.data(OPEN_MODALS_COUNT) === undefined) {
        $body.data(OPEN_MODALS_COUNT, 0);
    }

    $body.on('show.bs.modal', '.modal', function (event)
    {
        if (!$(this).hasClass(Z_ADJUSTED))  // only if z-index not already set
        {
            // Increment count & mark as being adjusted
            $body.data(OPEN_MODALS_COUNT, $body.data(OPEN_MODALS_COUNT) + 1);
            $(this).addClass(Z_ADJUSTED);

            // Set Z-Index
            $(this).css('z-index', defaultBootstrapModalZindex + (1 * $body.data(OPEN_MODALS_COUNT)));

            //// BackDrop z-index   (Doesn't seem to be necessary with Bootstrap 3.3.2 ...)
            //$('.modal-backdrop').not( '.' + Z_ADJUSTED )
            //        .css('z-index', 1039 + (10 * $body.data(OPEN_MODALS_COUNT)))
            //        .addClass(Z_ADJUSTED);
        }
    });
    $body.on('hidden.bs.modal', '.modal', function (event)
    {
        // Decrement count & remove adjusted class
        $body.data(OPEN_MODALS_COUNT, $body.data(OPEN_MODALS_COUNT) - 1);
        $(this).removeClass(Z_ADJUSTED);
        // Fix issue with scrollbar being shown when any modal is hidden
        if($body.data(OPEN_MODALS_COUNT) > 0)
            $body.addClass('modal-open');
    });

顺便说一句，如果你想在AngularJs中使用它，只需将代码放在模块的.run()方法中即可。

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));

编辑:Bootstrap 3.3.4已经解决了这个问题(和其他模式问题)，所以如果你可以更新你的Bootstrap CSS和JS，这将是最好的解决方案。如果你不能更新下面的解决方案仍然可以工作，基本上做同样的事情，bootstrap 3.3.4(重新计算和应用填充)。

Bass Jobsen指出，Bootstrap的新版本已经解决了z指数问题。模态开放类和填充右仍然是我的问题，但这个脚本的灵感来自Yermo Lamers解决方案解决了它。只要把它放到JS文件中就可以了。

$(document).on('hide.bs.modal', '.modal', function (event) {
    var padding_right = 0;
    $.each($('.modal'), function(){
        if($(this).hasClass('in') && $(this).modal().data('bs.modal').scrollbarWidth > padding_right) {
            padding_right = $(this).modal().data('bs.modal').scrollbarWidth
        }
    });
    $('body').data('padding_right', padding_right + 'px');
});

$(document).on('hidden.bs.modal', '.modal', function (event) {
    $('body').data('open_modals', $('body').data('open_modals') - 1);
    if($('body').data('open_modals') > 0) {
        $('body').addClass('modal-open');
        $('body').css('padding-right', $('body').data('padding_right'));
    }
});

$(document).on('shown.bs.modal', '.modal', function (event) {
    if (typeof($('body').data('open_modals')) == 'undefined') {
        $('body').data('open_modals', 0);
    }
    $('body').data('open_modals', $('body').data('open_modals') + 1);
    $('body').css('padding-right', (parseInt($('body').css('padding-right')) / $('body').data('open_modals') + 'px'));
});

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

检查情态动词的计数，并将值添加到背景作为z-index

    var zIndex = 1500 + ($('.modal').length*2) + 1;
    this.popsr.css({'z-index': zIndex});

    this.popsr.on('shown.bs.modal', function () {
        $(this).next('.modal-backdrop').css('z-index', zIndex - 1);
    });

    this.popsr.modal('show');

适用于开启/关闭多种模式

jQuery(function()
{
    jQuery(document).on('show.bs.modal', '.modal', function()
    {
        var maxZ = parseInt(jQuery('.modal-backdrop').css('z-index')) || 1040;

        jQuery('.modal:visible').each(function()
        {
            maxZ = Math.max(parseInt(jQuery(this).css('z-index')), maxZ);
        });

        jQuery('.modal-backdrop').css('z-index', maxZ);
        jQuery(this).css("z-index", maxZ + 1);
        jQuery('.modal-dialog', this).css("z-index", maxZ + 2);
    });

    jQuery(document).on('hidden.bs.modal', '.modal', function () 
    {
        if (jQuery('.modal:visible').length)
        {
            jQuery(document.body).addClass('modal-open');

           var maxZ = 1040;

           jQuery('.modal:visible').each(function()
           {
               maxZ = Math.max(parseInt(jQuery(this).css('z-index')), maxZ);
           });

           jQuery('.modal-backdrop').css('z-index', maxZ-1);
       }
    });
});

演示

https://www.bootply.com/cObcYInvpq#