Which tags are can be self closing and which ones must have a closing tag in XHTML 1.0 Strict?

Which tags are c开发者_JS百科an be self closing and which ones must have a closing tag in XHTML 1.0 Strict?

Example:

<br/>
<input />

Are there certain tags that must have a closing tag, can be self closing, or eigther way works in XHTML 1.0 Strict?

Every element, that’s content model is EMPTY in the XHTML 1.0 Strict DTD (i.e. <!ELEMENT element-name EMPTY>), is an empty element and “must either have an end tag or the start tag must end with />.” Namely it’s base, meta, link, hr, br, param, img, area, and input. Every other element must have an end tag.

You are asking about "EMPTY Elements" including <hr /> <input /> <img /> <meta /> <link /> which can all be closed in a single tag. Non-empty elements which should contain text or sub-elements could technically be closed this way if they have no child or text but you are not supposed to do it. For example <p></p> should not be <p /> but that could pass strict validation.

http://www.w3.org/TR/xhtml1/#guidelines