HTML onshow Attribute

Definition and Usage

The onshow attribute fires when a <menu> element is shown as a context menu.

Applies to

The onshow attribute is part of the Event Attributes, and can be used on the following element:

Elements	Event
<menu>	onshow

Example

Execute a JavaScript when a <menu> element is shown as a context menu:

<div contextmenu="mymenu">
<p>Right-click inside this box to see the context menu!
<menu type="context" id="mymenu" onshow="myFunction()">
<menuitem label="Refresh" onclick="window.location.reload();"></menuitem>
</menu>
</div>

Try it Yourself »

Browser Support

The numbers in the table specify the first browser version that fully supports the event attribute.

Event Attribute
onshow	Not supported	Not supported	8.0	Not supported	Not supported

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