在伸缩块中包装单元格内容。作为奖励，单元格自动匹配可见宽度。

table { width: 100%; } div.parent { display: flex; } div.child { flex: 1; width: 1px; overflow-x: hidden; text-overflow: ellipsis; } <table> <tr> <td> <div class="parent"> <div class="child"> xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx </div> <div> </td> </tr> </table>

如果你指定table-layout: fixed;在table元素上，那么td的样式应该生效。不过，这也会影响细胞的大小。

Sitepoint在这里稍微讨论了一下表格布局方法: http://reference.sitepoint.com/css/tableformatting

为什么会发生这种情况?

似乎w3.org的这部分建议文本溢出只适用于块元素:

11.1.  Overflow Ellipsis: the ‘text-overflow’ property

text-overflow      clip | ellipsis | <string>  
Initial:           clip   
APPLIES TO:        BLOCK CONTAINERS               <<<<
Inherited:         no  
Percentages:       N/A  
Media:             visual  
Computed value:    as specified  

MDN也是这么说的。

这个jsfiddle有您的代码(带有一些调试修改)，如果它应用于div而不是td，则可以正常工作。它还有我能很快想到的唯一解决方法，即将td的内容包装在包含div的块中。然而，对我来说，这看起来像是“丑陋的”标记，所以我希望其他人有更好的解决方案。测试的代码是这样的:

td, div { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; border: 1px solid red; width: 80px; } Works, but no tables anymore: <div>Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah.</div> Works, but non-semantic markup required: <table><tr><td><div>Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah.</div></td></tr></table>

当它以表格宽度百分比为单位时，或者你不能在表格单元格上设置固定宽度。你可以应用table-layout: fixed;让它起作用。

table { table-layout: fixed; width: 100%; } td { text-overflow: ellipsis; white-space: nowrap; overflow: hidden; border: 1px solid red; } <table> <tr> <td>Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah.</td> <td>Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah. Lorem ipsum and dim sum yeah yeah yeah.</td> </tr> </table>

在我的情况下，这是有效的，在Firefox和Chrome:

td {
  max-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  width: 100%;
}

指定max-width或固定宽度并不适用于所有情况，表应该是流动的，并自动为单元格设置空间。这就是桌子的作用。适用于IE9和其他浏览器。

使用这个:http://jsfiddle.net/maruxa1j/

table { width: 100%; } .first { width: 50%; } .ellipsis { position: relative; } .ellipsis:before { content: '&nbsp;'; visibility: hidden; } .ellipsis span { position: absolute; left: 0; right: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; } <table border="1"> <thead> <tr> <th>Header 1</th> <th>Header 2</th> <th>Header 3</th> <th>Header 4</th> </tr> </thead> <tbody> <tr> <td class="ellipsis first"><span>This Text Overflows and is too large for its cell.</span></td> <td class="ellipsis"><span>This Text Overflows and is too large for its cell.</span></td> <td class="ellipsis"><span>This Text Overflows and is too large for its cell.</span></td> <td class="ellipsis"><span>This Text Overflows and is too large for its cell.</span></td> </tr> </tbody> </table>