onchange (HTML attribute)
| Depr. | Version |
|---|---|
| No | HTML 4 |
| IE5.5+ | FF1+ | SA1.3+ | OP9.2+ |
|---|---|---|---|
| Full | Full | Full | Full |
Syntax
onchange="script"
Description
Theonchange attribute is used only within the context
of a form. It can be applied to
an input, a textarea, or a select control to identify when the value of
one of those elements is changed either by the user directly, or as a
result of some scripting on the page.Example
In this example, the
onchange event calls the
checkStockAvailability function:
<input name="orderAmount" size="2" onchange="checkStockAvailability();"/>
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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