onkeydown (HTML attribute)
| Version |
|---|
| HTML 4 |
| IE5.5+ | FF1+ | SA1.3+ | OP9.2+ |
|---|---|---|---|
| Full | Full | Full | Full |
Syntax
onkeydown="script"
Description
The
onkeydown event handler captures the moment that a
key is pressed down but has not yet been released. The release of the key
is captured by the onkeyup and onkeypress attributes.
Example
This attribute may be used when a key that’s being held down continuously has some kind of timer effect—for example, the user presses the space key until an activity on screen is completed (releasing the key may cause the action to pause)—like so:<body onkeydown="increasePower();"/>
Value
This attribute has no fixed value.
It’s up to the author to decide on the scripting that’s included here, be
that a call to one or more defined functions, or a simple
alert() statement.
Compatibility
| Internet Explorer | Firefox | Safari | Opera | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 5.5 | 6.0 | 7.0 | 1.0 | 1.5 | 2.0 | 1.3 | 2.0 | 3.0 | 9.2 | 9.5 |
| Full | Full | Full | Full | Full | Full | Full | Full | Full | Full | Full |
Every browser listed supports this attribute. However, it should be avoided as it encourages the mixing of content and behavior.
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