Length values

Length values come in two varieties:

• Relative lengths, which vary depending on the computer being used.
• Absolute values, which remain constant regardless of the hardware and software being used.

Relative lengths values:

• em: Em dash
• ex: x-height
• px: pixel

Absolute length values:

• pt: Point
• pc: Picas
• mm: millimeters
• cm: centimeters
• in: Inches

Color values

Color can be written in different way,

• #RRGGBB
• rgb(R#, G#, B#)
• rgb(R%, G%, B%)
• name

Percentage

The behavior of percentage value depends on the property being used.

URLs

A uniform resource locator (URL) is the unique address of something on the Web.  URL can be written so that it cancel itself

<a href="#">Link</a>

or

<a href="javascript: void('')">Link</a>

In some situation placing any URL in the href will interfer with the DHTML functions so the latter code will be used instead. These function simply tells the link to do absolutely nothing.

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Author: Clay Lua

Clay is the main writer and founder of Hungred.com. A person who thinks a lot and spend majority of his time online. He spend most of his time developing web application and writing articles to share and learn. You can find him at his twitter.