在HTML中，表格不应该用于布局，这似乎是普遍的观点。
Why?
我从来没有(老实说，很少)看到过支持这一点的有力论据。通常的答案是:
It's good to separate content from layoutBut this is a fallacious argument; Cliche Thinking. I guess it's true that using the table element for layout has little to do with tabular data. So what? Does my boss care? Do my users care?Perhaps me or my fellow developers who have to maintain a web page care... Is a table less maintainable? I think using a table is easier than using divs and CSS.By the way... why is using a div or a span good separation of content from layout and a table not? Getting a good layout with only divs often requires a lot of nested divs.
Readability of the codeI think it's the other way around. Most people understand HTML, few understand CSS.
It's better for SEO not to use tablesWhy? Can anybody show some evidence that it is? Or a statement from Google that tables are discouraged from an SEO perspective?
Tables are slower.An extra tbody element has to be inserted. This is peanuts for modern web browsers. Show me some benchmarks where the use of a table significantly slows down a page.
A layout overhaul is easier without tables, see css Zen Garden.Most web sites that need an upgrade need new content (HTML) as well. Scenarios where a new version of a web site only needs a new CSS file are not very likely. Zen Garden is a nice web site, but a bit theoretical. Not to mention its misuse of CSS.
我对使用divs + CSS而不是表的良好参数非常感兴趣。
一般来说，表并不比CSS更容易或更易于维护。然而，在一些特定的布局问题中，表确实是最简单和最灵活的解决方案。
在表示标记和CSS支持相同类型的设计的情况下，CSS显然是更可取的，没有人会认为字体标记比在CSS中指定排版更好，因为CSS提供了与字体标记相同的功能，但以一种更干净的方式。
The issue with tables, however, is basically that the table-layout model in CSS is not supported in Microsoft Internet Explorer. Tables and CSS are therefore not equivalent in power. The missing part is the grid-like behavior of tables, where the edges of cells align both vertically and horizontally, while cells still expand to contain their content. This behavior is not easy to achieve in pure CSS without hardcoding some dimensions, which makes the design rigid and brittle (as long as we have to support Internet Explorer - in other browsers this is easliy achieved by using display:table-cell).
因此，这并不是一个表或CSS更可取的问题，而是一个认识到使用表可以使布局更灵活的具体情况的问题。
不使用表的最重要原因是可访问性。Web内容可访问性指南http://www.w3.org/TR/WCAG10/建议不要使用表格进行布局。如果您担心可访问性(在某些情况下，您可能有法律义务这样做)，即使表更简单，也应该使用CSS。请注意，您总是可以用CSS创建与表相同的布局，这可能只是需要更多的工作。
I still don't quite understand how divs / CSS make it easier to change a page design when you consider the amount of testing to ensure the changes work on all browsers, especially with all the hacks and so on. Its a hugely frustrating and tedious process which wastes large amounts of time and money.
Thankfully the 508 legislation only applies to the USA (land of the free - yeah right) and so being as I am based in the UK, I can develop web sites in whatever style I choose. Contrary to popular (US) belief, legislation made in Washington doesn't apply to the rest of the world - thank goodness for that. It must have been a good day in the world of web design the day the legislation came into force.
I think I'm becoming increasingly cynical as I get older with 25 years in the IT industry but I feel sure this kind of legislation is just to protect jobs. In reality anyone can knock together a reasonable web page with a couple of tables. It takes a lot more effort and knowledge to do this with DIVs / CSS. In my experience it can take hours and hours Googling to find solutions to quite simple problems and reading incomprehensible articles in forums full of idealistic zealots all argueing about the 'right' way to do things. You can't just dip your toe in the water and get things to work properly in every case. It also seems to me that the lack of a definitive guide to using DIVS / CSS "out of the box", that applies to all situations, working on browsers, and written using 'normal' language with no geek speak, also smells of a bit of protectionism.
I'm an application developer and I would say it takes almost twice as long to figure out layout problems and test against all browsers than it does to create the basic application, design and implement business objects, and create the database back end. My time = money, both for me and my customers alike so I am sorry if I don't reject all the pro DIV / CSS arguments in favour of cutting costs and providing value for money for my customers. Maybe its just the way that developers minds work, but it seems to me far easier to change a complex table structure than it is to modify DIVs / CSS.
Thankfully it now appears that a solution to these issues is now available - its called WPF.
一个例子:你想要居中
一个页面的主要内容区域，但在
为了把浮体装在里面，
它需要浮动。没有
CSS中的float: center。
这并不是在居中元素中“包含浮点数”的唯一方法。所以，这根本不是一个好的论点!
在某种程度上，“divs vs table”是一个错误的前提。
把一页快速地分成三列?说实话，表格更简单。但是没有专业人士将它们用于布局，因为它们将页面元素的位置锁定在页面中。
真正的争论是“由CSS完成的定位(最好是在远程文件中)”，而不是“在页面中由HTML完成的定位”。相对于后者，每个人都能看到前者的好处吗?
Size -- if your page layout is in the HTML, in the pages, it can't be cached, and it has to be repeated on every page. You will save enormous amounts of bandwidth if your layout is in a cached CSS file, not in the page.
Multiple developers can work on the same page at the same time -- I work on the HTML, other guy works on the CSS. No repository needed, no problems with over-writing, file locking etc.
Making changes is easier -- there will be problems with layout in different browsers, but you only have to fix one file, the CSS file, to sort them out.
Accessibility, as mentioned a lot previously. Tables assume a two-dimensional layout works for everyone. That's not how some users view your content and it's not how Google views your content.
考虑一下:
[ picture ] [ picture ] [ picture ]
[ caption ] [ caption ] [ caption ]
表示包含6个单元格的表中的两行。能看到二维表格布局的人会在每张图片下看到标题。但是使用语音合成，或者PDA，以及搜索引擎蜘蛛，那是
picture picture picture caption caption caption
有了表格，这种关系就明显消失了。
div和CSS是否更适合在HTML页面上简单地布局矩形以在最短的时间内实现给定的设计?不，他们可能不是。但我不是在快速布局矩形来实现给定的设计。我想的是更大的前景。
