12-10-2010, 05:04 PM
[attachment=5755]
HTML Frames
Agenda
• Advantages and disadvantages of frames
• FRAME template
• Defining rows and cols in a FRAMESET
• Common FRAME and FRAMESET attributes
• Nested frames
• Targeting a document to a named
FRAME cell
Frame Advantages
• Certain parts of the interface (e.g., a TOC)
are always on the screen
• Can avoid retyping common sections of
multiple Web pages
• Consistent use across a large site
sometimes simplifies user navigation
• A convenient way to mix text-oriented HTML
with Java applets
• Image maps are more convenient if the map
image remains on screen and only the
results section changes
Frame Disadvantages
• The meaning of the “Back” and “Forward”
buttons can be confusing
• Poorly designed frames can get the user
lost
• Hard to find real URL of a page you want
– Printing problems!
• Hard to bookmark "configuration"
• Some very old browsers do not support
frames
• Security
– Hackers can insert frame cells into your pages in some
circumstances, perhaps stealing information intended for
your site
Frame Template
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN">
<HTML>
<HEAD><TITLE>Document Title</TITLE></HEAD>
<FRAMESET ...>
<!-- FRAME and Nested FRAMESET Entries -->
<NOFRAMES>
<BODY>
<!-- Stuff for non-Frames browsers -->
</BODY>
</NOFRAMES>
</FRAMESET>
</HTML>
