javascript - 宽页面固定导航中的 Bootstrap 弹出窗口

Question

我在具有固定宽度容器的页面上使用固定 Bootstrap 响应式导航，即在小型设备上页面本身具有水平滚动，但导航采用页面宽度。

导航中的按钮之一有一个弹出窗口。问题是:当您向右滚动主页时​​，弹出窗口渲染不正确或完全消失。

HTML

<!-- Fixed navbar -->
<nav class="navbar navbar-default navbar-fixed-top" role="navigation">
    <div class="container">
        <div class="navbar-header">
            <a class="navbar-brand" href="#">Project name</a>
        </div>
        <div id="navbar" class="navbar-collapse collapse">
            <ul class="nav navbar-nav">
                <li><a href="#dummy1">Dummy 1</a></li>
                <li><a href="#dummy2">Dummy 2</a></li>
                <li>
                  <a href="#contact" data-placement="bottom" data-trigger="click" data-container="body" data-toggle="popover" title="Popover title" data-content="And here's some amazing content. It's very engaging. Right?">Contact Popover</a>
                </li>             
            </ul>
        </div>
        <!--/.nav-collapse -->
    </div>
</nav>
<div id="main" class="container">
    <div class="row">
        <h1>Dummy 1</h1>
        <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec pede justo, fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede mollis pretium. Integer tincidunt. Cras dapibus. Vivamus elementum semper nisi. Aenean vulputate eleifend tellus. Aenean leo ligula, porttitor eu, consequat vitae, eleifend ac, enim. Aliquam lorem ante, dapibus in, viverra quis, feugiat a, tellus. Phasellus viverra nulla ut metus varius laoreet. Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue. Curabitur ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla mauris sit amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales, augue velit cursus nunc,</p>
    </div>    
</div>

CSS

body {
    padding-top: 50px;
    width: 1700px;
}

这是一个示例:https://jsfiddle.net/nnxfk7s6/8/

• 运行代码片段
• 按“联系弹出窗口”即可查看弹出窗口
• 向右滚动页面
• 再次按“联系弹出窗口”即可查看未完全渲染的弹出窗口

我尝试使用弹出窗口的 container 和 viewport 属性，但没有解决问题。 (http://getbootstrap.com/javascript/#popovers-options)

Answer 1

所以我最终使用了一些 JavaScript 代码来调整弹出框位置。

• 我们需要将弹出窗口触发器设置为手动
• 我们必须为弹出框本身设置width或min-width
• 我们知道弹出窗口上方的小箭头位置始终是正确的，我们可以使用箭头偏移来计算正确的弹出窗口位置

这是代码:

$(function () {
    $('[data-toggle="popover"]').popover();
    $('body').on("click", '[data-toggle="popover"]', function (e) {
        e.preventDefault();
        if (!$(this).attr('aria-describedby')) {
          $(this).popover("show");
          // aria-describedby attribute keeps id of the popover
          var $pop = $('#' + $(this).attr('aria-describedby'));
          if($pop) {
            // find arrow element within popover to obtain its offset
            var $arrow = $pop.find('.arrow');
            // set new left position for the popover
            $pop.css('left', $arrow.offset().left - $pop.width()*0.75);
            // set new arrow position
            $arrow.css('left', '75%');
          }
        } else {
            $(this).popover("hide");
        }
    });
});

这是工作示例:https://jsfiddle.net/nnxfk7s6/9/