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。
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.
1:是的，你的用户很关心。如果他们使用屏幕阅读器，它就会丢失。如果我使用任何其他试图从页面中提取信息的工具，遇到不用于表示表格数据的表是一种误导。
div或span用于分隔内容是可以接受的，因为这正是那些元素的含义。当我，一个搜索引擎，一个屏幕阅读器或其他任何东西，遇到一个表格元素，我们期望这意味着“以下是表格数据，表示在一个表中”。当我们遇到div时，我们期望“这是一个用于将内容划分为单独部分或区域的元素。
2 .可读性:错误。如果所有的表示代码都是css，我可以阅读html，我将理解页面的内容。或者我可以阅读css和理解的表示。如果html中的所有内容都是混杂在一起的，那么在我甚至可以看到什么是内容，什么不是内容之前，我必须在脑海中剔除所有与表示相关的部分。
此外，我害怕遇到一个不懂css的web开发人员，所以我真的不认为这是一个问题。
3:表比较慢:是的，它们比较慢。原因很简单:在呈现表之前，必须对表进行完整的解析，包括其内容。可以在遇到div时呈现它，甚至在它的内容被解析之前。这意味着div会在页面加载完成之前显示出来。
还有一个好处是，表格更加脆弱，在不同的浏览器中呈现的效果并不总是一样的，不同的字体和字体大小以及所有其他可能导致布局变化的因素。表格是一种很好的方法，可以确保你的网站在某些浏览器中会偏离一两个像素，当用户改变字体大小或以任何其他方式改变设置时，它不会很好地缩放。
Of course #1 is the big one. A lot of tools and applications depend on the semantic meaning of a webpage. The usual example is screen-readers for visually impaired users. If you're a web developer, you'll find that many large companies who may otherwise hire you to work on a site, require that the site is accessible even in this case. Which means you have to think about the semantic meaning of your html. With the semantic web, or more relevantly, microformats, rss readers and other tools, your page content is no longer viewed exclusively through a browser.
