The rule in HTML is the BR empty tag, no terminator, but in XHTML, the stipulation is that the br/start tag is immediately followed by the end tag, please understand this
Answer from Stackflow:
Simply <br> is sufficient.
The other forms are there for compatibility with XHTML; to make it possible to write the same code as XHTML, and Have it also work as HTML. Some systems that generate HTML May is based on XML generators, and thus not have the ability to output just a bare <br > tag; If you ' re using such a system, it's fine to use <br/>, it's just not necessary if don ' t need to do it.
Very Few people actually use XHTML, however. You are need to serve your content as application/xhtml+xml for it to is interpreted as XHTML, and that won't work in IE (i T would also mean that any small error your make would prevent your page from being displayed. In browsers TML). So, most of what looks like XHTML in the web is actually being served, and interpreted, as HTML. Serving XHTML as text/html considered harmful for some more information.
means that the rules in HTML are <br> null tags, no terminator, but in XHTML, the rulesIs the <br/> start tag immediately following the end tag.
,<br> tags in XHTML must be properly closed, such as: <br/>. The <br> tag is an empty label (meaning it has no end tag, so this is the wrong:<br></br>). In XHTML, the end tag is placed in the start tag, which is <br/>.