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'));
});

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);

});

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#

在modal.js中添加全局变量

var modalBGIndex = 1040; // modal backdrop background
var modalConIndex = 1042; // modal container data 

//添加变量modal .prototype. background

var e    = $.Event('show.bs.modal', { relatedTarget: _relatedTarget })

modalConIndex = modalConIndex + 2; // add this line inside "Modal.prototype.show"

that.$element
    .show()
    .scrollTop(0)
that.$element.css('z-index',modalConIndex) // add this line after show modal 

if (this.isShown && this.options.backdrop) {
      var doAnimate = $.support.transition && animate

      modalBGIndex = modalBGIndex + 2; // add this line increase modal background index 2+

this.$backdrop.addClass('in')
this.$backdrop.css('z-index',modalBGIndex) // add this line after backdrop addclass

使用CSS进行Z-index和模态背景校正

.modal.fade {
  z-index: 10000000 !important;
  background: rgba(0, 0, 0, 0.5);
}
.modal-backdrop.fade {
  opacity: 0;
}