结合A1rPun的回答和StriplingWarrior的建议，我想到了这个:

$(document).on({
    'show.bs.modal': function () {
        var zIndex = 1040 + (10 * $('.modal:visible').length);
        $(this).css('z-index', zIndex);
        setTimeout(function() {
            $('.modal-backdrop').not('.modal-stack').css('z-index', zIndex - 1).addClass('modal-stack');
        }, 0);
    },
    'hidden.bs.modal': function() {
        if ($('.modal:visible').length > 0) {
            // restore the modal-open class to the body element, so that scrolling works
            // properly after de-stacking a modal.
            setTimeout(function() {
                $(document.body).addClass('modal-open');
            }, 0);
        }
    }
}, '.modal');

工作甚至动态模态添加后，并消除了第二个滚动条的问题。最值得注意的是，我发现这个功能很有用，它将模态中的表单与Bootbox警报的验证反馈集成在一起，因为这些使用动态模态，因此需要将事件绑定到document，而不是.modal，因为这只会将它附加到现有的模态。

小提琴。

我也遇到过类似的情况，经过一番研究，我找到了一个解决方案。虽然我不擅长JS，但我还是设法写下了一个小查询。

http://jsfiddle.net/Sherbrow/ThLYb/

<div class="ingredient-item" data-toggle="modal" data-target="#myModal">test1 <p>trerefefef</p></div>
<div class="ingredient-item" data-toggle="modal" data-target="#myModal">tst2 <p>Lorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem IpsumLorem Ipsum</p></div>
<div class="ingredient-item" data-toggle="modal" data-target="#myModal">test3 <p>afsasfafafsa</p></div>

<!-- 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" aria-hidden="true">&times;</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>





$('.ingredient-item').on('click', function(e){

   e.preventDefault();

    var content = $(this).find('p').text();

    $('.modal-body').html(content);

});

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。

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));

我的解决方案自举4，与无限深度的模态和动态模态工作。

$('.modal').on('show.bs.modal', function () {
    var $modal = $(this);
    var baseZIndex = 1050;
    var modalZIndex = baseZIndex + ($('.modal.show').length * 20);
    var backdropZIndex = modalZIndex - 10;
    $modal.css('z-index', modalZIndex).css('overflow', 'auto');
    $('.modal-backdrop.show:last').css('z-index', backdropZIndex);
});
$('.modal').on('shown.bs.modal', function () {
    var baseBackdropZIndex = 1040;
    $('.modal-backdrop.show').each(function (i) {
        $(this).css('z-index', baseBackdropZIndex + (i * 20));
    });
});
$('.modal').on('hide.bs.modal', function () {
    var $modal = $(this);
    $modal.css('z-index', '');
});

如果你正在寻找Bootstrap 4的解决方案，有一个简单的使用纯CSS:

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