</A>tag at the end of a link you've created. If you do this your entire document from that point on turns into a link (normally blue underlined text). Similarly, leaving out a
</B>tag at the end of bolded text will result in everything from there on appearing bolded.
<BODY>). Omitting one of these (especially the end one, such as
</HEAD>) can cause very strange things to happen to your document, such as graphics refusing to appear, etc. By the way, misspelling a tag is the same as leaving it out, since HTML will ignore any tag it doesn't understand (such as a "
<) to the first end bracket it finds (
>) is part of your tag. Since the contents of a tag don't display as text on your page, this can cause big chunks of text to unexpectedly disappear. Similarly, leaving out quote marks when required (such as the graphics filename in an
IMGtag) can result in the browser trying to guess just where the filename ends and other HTML information begins. Again, the result can be disappearing text or graphics.
SRC="filename"attribute into a heading tag) will usually just result in the inappropriate information being ignored; sometimes the results can be unpredictable, though, depending on your browser. One common mistake is putting the
ALIGNattribute into an image tag (such as
<IMG SRC="mygraphic.gif" ALIGN="CENTER">in order to center it. Since
ALIGN="BOTTOM"are perfectly legal in an
<IMG>tag, it's easy to assume that
ALIGN="CENTER"should be too. Unfortunately, it's not, and trying to center your graphic this way can be very frustrating as you keep rechecking your code looking for some other mistake. The only reliable way to avoid this is to acquire the necessary encyclopedic knowledge of which attributes are legal in which tags. (Or buy a good reference manual.)
</B>) you should always nest them, not overlap them. What this means is that if you want to put a pair of tags inside some other pair, this is OK:
<A HREF="http://www.a.place"><B>Jump here</B></A>
<A HREF="http://www.a.place"><B>Jump here</A></B>
->Page Source (in Navigator) or View
->Source (in Internet Explorer) your browser will show you your HTML code with any mistakes highlighted (although the real problem may be earlier in your code). This can often allow you to identify problems that are otherwise hard to spot.
This page last updated 2/5/2010.|