July 1998
Intermediate to advanced
1456 pages
65h 5m
English
Content preview from Dynamic HTML: The Definitive Reference
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Name
<OPTGROUP> — NN n/a IE n/a HTML 4
Synopsis
<OPTGROUP>...</OPTGROUP>
End Tag: Required
The OPTGROUP
element offers the possibility that
future browsers will provide a hierarchical SELECT
element. An OPTGROUP element represents a
container of OPTION elements. The
LABEL attribute is the text that would appear in
the main SELECT element listing, with nested
OPTION elements cascading off the side when the
OPTGROUP element is highlighted.
Example
<SELECT NAME="carCos">
<OPTGROUP LABEL="American">
<OPTION VALUE="General Motors">General Motors
<OPTION VALUE="Ford">Ford Motor Company
<OPTION VALUE="Chrysler">Chrysler Corporation
</OPTGROUP>
<OPTGROUP LABEL="Japanese">
<OPTION VALUE="Toyota">Toyota
<OPTION VALUE="Honda">Honda
<OPTION VALUE="Nissan">Nissan
</OPTGROUP>
</SELECT>Attributes
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Event Handler Attributes
|
Handler |
NN |
IE |
HTML |
|---|---|---|---|
onClick |
n/a |
4 |
4 |
onDblClick |
n/a |
4 |
4 |
onKeyDown |
n/a |
4 |
4 |
onKeyPress |
n/a |
4 |
4 |
onKeyUp |
n/a |
4 |
4 |
onMouseDown |
n/a |
4 |
4 |
onMouseMove |
n/a |
4 |
4 |
onMouseOut |
n/a |
4 |
4 |
onMouseOver |
n/a |
4 |
4 |
onMouseUp |
n/a |
4 |
4 |
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.