如果有人试图让线夹在flexbox中工作，那就有点棘手了——特别是当您使用非常长的单词进行折磨测试时。这段代码片段中唯一真正的区别是min-width: 0;在包含截断文本的伸缩项中，以及换行:断字;。向https://css-tricks.com/flexbox-truncated-text/致敬。免责声明:在写这个答案的时候，Chrome以外的浏览器支持很差。然而，从那时起，情况可能有所改善。

.flex-parent { display: flex; } .short-and-fixed { width: 30px; height: 30px; background: lightgreen; } .long-and-truncated { margin: 0 20px; flex: 1; min-width: 0;/* Important for long words! */ } .long-and-truncated span { display: inline; -webkit-line-clamp: 3; text-overflow: ellipsis; overflow: hidden; display: -webkit-box; -webkit-box-orient: vertical; word-wrap: break-word;/* Important for long words! */ } <div class="flex-parent"> <div class="flex-child short-and-fixed"> </div> <div class="flex-child long-and-truncated"> <span>asdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasd</span> </div> <div class="flex-child short-and-fixed"> </div> </div>

http://codepen.io/AlgeoMA/pen/JNvJdx (codeen版本)

如果有人试图让线夹在flexbox中工作，那就有点棘手了——特别是当您使用非常长的单词进行折磨测试时。这段代码片段中唯一真正的区别是min-width: 0;在包含截断文本的伸缩项中，以及换行:断字;。向https://css-tricks.com/flexbox-truncated-text/致敬。免责声明:在写这个答案的时候，Chrome以外的浏览器支持很差。然而，从那时起，情况可能有所改善。

.flex-parent { display: flex; } .short-and-fixed { width: 30px; height: 30px; background: lightgreen; } .long-and-truncated { margin: 0 20px; flex: 1; min-width: 0;/* Important for long words! */ } .long-and-truncated span { display: inline; -webkit-line-clamp: 3; text-overflow: ellipsis; overflow: hidden; display: -webkit-box; -webkit-box-orient: vertical; word-wrap: break-word;/* Important for long words! */ } <div class="flex-parent"> <div class="flex-child short-and-fixed"> </div> <div class="flex-child long-and-truncated"> <span>asdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasdasd</span> </div> <div class="flex-child short-and-fixed"> </div> </div>

http://codepen.io/AlgeoMA/pen/JNvJdx (codeen版本)

我发现Skeep的回答是不够的，还需要一个溢出样式:

overflow: hidden;
text-overflow: ellipsis;
-webkit-line-clamp: 2;
display: -webkit-box;
-webkit-box-orient: vertical;

迟回复，但一个html换行也可以，所以你可以做一个html + css唯一的解决方案。所以通常使用br元素是不好的做法，但如果你用br打断了注释，text-overflow省略号将从html文本的下一行开始。

纯css方式用省略号修饰多行文本

调整文本容器的高度， 用-webkit-line-clamp控制断线:2;

.block-ellipsis {
  display: block;
  display: -webkit-box;
  max-width: 100%;
  height: 30px;
  margin: 0 auto;
  font-size: 14px;
  line-height: 1;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

太遗憾了，你不能让它工作超过两行!如果元素是显示块，高度设置为2em或其他，当文本溢出时，它会显示省略号，那就太棒了!

对于单个眼线，您可以使用:

.show-ellipsis {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

对于多行，也许你可以使用Polyfill，如jQuery autoellipsis，这是在github http://pvdspek.github.com/jquery.autoellipsis/上