In the past, screen readers and other accessibility software had a difficult time handling tables in an efficient fashion. To some extent, this became handled in screen readers by the reader switching between a "table" mode and a "layout" mode based on what it saw inside the table. This was often wrong, and so the users had to manually switch the mode when navigating through tables. In any case, the large, often highly nested tables were, and to a large extent, are still very difficult to navigate through using a screen reader.

The same is true when divs or other block-level elements are used to recreate tables and are highly nested. The purpose of divs is to be used as a fomating and layout element, and as such, are intended used to hold similar information, and lay it out on the screen for visual users. When a screen reader encounters a page, it often ignores any layout information, both CSS based, as well as html attribute based(This isn't true for all screen readers, but for the most popular ones, like JAWS, Windows Eyes, and Orca for Linux it is).

为此，表格式数据，也就是逻辑上有意义的在二维或多维维度中排序的数据，具有某种标题，最好放在表中，并使用div来管理页面上内容的布局。(另一种思考“表格数据”的方式是尝试以图表形式绘制它……如果你不能，它可能不是最好的表示在一个表中)

Finally, with a table-based layout, in order to achieve a fine-grained control of the position of elements on the page, highly nested tables are often used. This has two effects: 1.) Increased code size for each page - Since navigation and common structure is often done with the tables, the same code is sent over the network for each request, whereas a div/css based layout pulls the css file over once, and then uses less wordy divs. 2.) Highly nested tables take much longer for the client's browser to render, leading to slightly slower load times.

在这两种情况下，“最后一英里”带宽的增加，以及更快的个人电脑缓解了这些因素，但它们仍然是许多网站存在的问题。

With all of this in mind, as others have said, tables are easier, because they are more grid-oriented, allowing for less thought. If the site in question is not expected to be around long, or will not be maintained, it might make sense to do what is easiest, because it might be the most cost effective. However, if the anticipated userbase might include a substantial portion of handicapped individuals, or if the site will be maintained by others for a long time, spending the time up front to do things in a concise, accessible way may payoff more in the end.

使用DIV，您可以轻松地进行切换。例如，你可以这样做:

Menu | Content

Content | Menu

Menu
----
Content

在CSS中更改它很容易，而在HTML中则不然。你也可以提供几种风格(右手，左手，专为小屏幕)。

在CSS中，您还可以将菜单隐藏在用于打印的特殊样式表中。

另一个好处是，你的内容在代码中总是按照相同的顺序(菜单在前，内容在后)，即使在视觉上它是以其他方式呈现的。

内容和布局之间的分离也使它更容易为您的网站生成打印机友好的布局或不同的皮肤(样式)，而不必创建不同的html文件。有些浏览器(如Firefox)甚至支持从视图菜单中选择样式表。

而且我确实认为保持无表格布局更容易。你不需要担心行span, colspan等等。您只需创建一些容器div并将内容放置在需要的位置。也就是说，我认为它也更有可读性(<div id="sidebar"> vs <tr><td>…</td><td>…<td>sidebar</td></tr>)。

这只是一个你必须学会的小“技巧”(一旦你掌握了这个技巧，我认为它会更容易，更有意义)。

根据508法规(对于视障屏幕阅读器)，表格应该只用于保存数据，而不是用于布局，因为它会导致屏幕阅读器崩溃。至少别人是这么告诉我的。

如果您为每个div分配名称，您也可以使用CSS将它们一起蒙皮。只是让他们坐成你想要的样子有点麻烦。

看起来你只是习惯了桌子，仅此而已。 将布局放在表格中会限制你的布局。用CSS你可以移动位，看看http://csszengarden.com/ 不，布局通常不需要很多嵌套的div。

没有表格的布局和适当的语义HTML更干净，因此更容易阅读。 为什么不理解CSS的人要尝试阅读它呢?如果有人认为自己是web开发人员，那么对CSS的良好掌握是必须的。

SEO的好处来自于将最重要的内容放在页面上方的能力 拥有更好的内容与标记比率。

http://www.hotdesign.com/seybold/

这并不一定是一场战争。和谐是可能的。

使用一个表的整体布局和div在其中。

<table> 
    <tr><td colspan="3"><div>Top content</div></td></tr>
    <tr> 
        <td><div>Left navigation</div></td> 
        <td><div>Main content</div></td> 
        <td><div>Right navigation</div></td> 
    </tr>
    <tr><td colspan="3"><div>Bottom content</div></td></tr>
</table>

看，没有嵌套表。

我读过很多关于如何用divs实现这一点的文章，但从来没有发现任何事情，每次都没有问题。

一旦你有了整体结构，Divs是很棒的，但坦率地说，流体页眉/页脚和三个流体列是Divs的一大痛苦。Divs不是为流动性而设计的，所以为什么要使用它们呢?

注意，这种方法将在链接文本中提供100%的CSS遵从性