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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