Class or identifier

Question

Duplicate:

• Cascading style sheets use "id" or "class"
• CSS: are interchangeable and id interchangeable?
• div class vs id
• CSS: div id VS. div class

Someday, when I like to make choices, add an identifier (unique) to something (images), and I used jquery to do something on hover or click.

But the same thing can be done with classes. I understand that a class is for many things (let's say class = "selected"), but when the class adds something, I can run the jQuery action with this insted ID class ...

So the question is, what is the “right way” to use class and identifier if I can accomplish anything and everything with both!

Answer 1

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Answer 2

, - , HTML-.

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Answer 3

HTML , , .

Answer 4

, "" - , .

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• URL-, . , http://example.com/mypage.htm#someid. .
• Javascript. , document.getElementById('someid') ( $("#someid") jQuery). , , jQuery, , .

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