下面是使用hover的非coffeescript方式:

$(".product-search-trigger").popover({
    trigger: "hover",
    container: "body",
    html: true,
    placement: "left"
  }).on("show.bs.popover", function() {
    return $(this).data("bs.popover").tip().css({
      maxWidth: "300px"
    });
  });
});

在Bootstrap 4上，你可以很容易地检查模板选项，通过覆盖max-width:

$('#myButton').popover({
    placement: 'bottom',
    html: true,
    trigger: 'click',
    template: '<div class="popover" style="max-width: 500px;" role="tooltip"><div class="arrow"></div><h3 class="popover-header"></h3><div class="popover-body"></div></div>'
});

如果页面上有多个弹出窗口，这是一个很好的解决方案。

当我想改变一个特定弹出窗口的宽度时，我发现了这个Bootstrap 5+的解决方案。添加customClass对我有用:

Html:

<button class="btn btn-outline-secondary"  id="popover-help" data-bs-container="body" data-bs-toggle="popover" data-bs-placement="right" data-bs-content="Right popover">
   <i class="fa fa-question-circle"></i>
</button>

<div id="popover-help-container" style="display: none;">
    <h4 style="text-align: left;"> How to:</h4>
    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec condimentum ultricies elit, mattis egestas nisl suscipit ac. Duis ipsum augue, convallis sed nunc in, pellentesque luctus elit. Duis porttitor massa sed finibus rutrum. Nunc eu risus ultrices, volutpat leo eget, pulvinar eros. Donec rhoncus mattis sem, ac iaculis turpis semper non. Cras dapibus tristique risus, eu tincidunt elit condimentum fermentum. Nunc at dignissim ante, nec efficitur felis. Duis mauris magna, fermentum eu egestas vel, vehicula at est. Nullam dapibus nisi non purus pellentesque ultrices. Nulla pulvinar neque quis ipsum semper, a congue tortor aliquet. Suspendisse vulputate porttitor feugiat. Maecenas pretium porta mauris feugiat pellentesque. Integer tempus risus eu pretium consectetur.

Donec interdum, eros ac imperdiet pretium, magna risus laoreet tellus, in finibus justo sapien et lacus. Pellentesque placerat ligula at metus sollicitudin, et convallis nisi luctus. Vivamus non arcu vel ex pharetra auctor. Morbi efficitur sed turpis id finibus. Sed porttitor luctus quam sed laoreet. Nunc facilisis finibus aliquet. Maecenas pellentesque sem dui, sed blandit tortor placerat ut. Donec tempor ipsum in sem fermentum, vel vulputate magna egestas.</p>
</div> 

JS:

<script type="text/javascript">
    var popoverTriggerList = [].slice.call(document.querySelectorAll('[id="popover-help"]'))
    var popoverList = popoverTriggerList.map(function (popoverTriggerEl) {
    return new bootstrap.Popover(popoverTriggerEl,{
        content: function() {
                return $('#popover-help-container').html();
            },
        html: true,
        placement: 'bottom',
        sanitize: false,
        customClass: 'popover-large'
        });
    })
</script>

css:

.popover-large {
  max-width: 50%; /* Max Width of the popover (depending on the container!) */
}

container: 'body'通常是这样的(参见上面JustAnil的回答)，但如果你的弹窗是在一个模态中，就会有一个问题。当弹窗附加到body时，z索引将它放在模态后面。这似乎与BS2 5014问题有关，但我在3.1.1上得到了它。你不需要使用容器的主体，但是如果你将代码修正为

   $('#fubar').popover({
   trigger : 'hover',
   html    : true,
   dataContainer : '.modal-body',
   ...etc });

然后你修复了z-index问题，但弹窗宽度仍然是错误的。

我能找到的唯一解决办法是使用container: 'body'，并添加一些额外的css:

.popover { 
  max-width : 400px;
  z-index   : 1060;
}

注意，css解决方案本身是不起作用的。

下面是使用hover的非coffeescript方式:

$(".product-search-trigger").popover({
    trigger: "hover",
    container: "body",
    html: true,
    placement: "left"
  }).on("show.bs.popover", function() {
    return $(this).data("bs.popover").tip().css({
      maxWidth: "300px"
    });
  });
});

对于typescript组件:

@Component({
    selector: "your-component",
    templateUrl: "your-template.component.html",
    styles: [`
        :host >>> .popover {
          max-width: 100%;
        }
    `]
})