ismap (HTML attribute)

Spec
Depr. Version
No HTML 2
Browser support (more…)
IE5.5+ FF1+ SA1.3+ OP9.2+ CH2+
Full Full Full Full Full

Syntax

ismap="ismap"

Description

The ismap attribute is rarely seen, but when it is, it’s used to indicate that the user’s mouse actions over the image should be processed using a server-side image map. When the user clicks on an area of the image using the mouse (it can’t be activated by keyboard controls), the coordinates are sent back to the server in the form of a query string in the URI.

It’s far more common to see this behavior handled on the client side with the usemap attribute.

Example

The ismap attribute is set as follows:

<img src="giant-prawn.jpg" alt="The Giant Prawn at Ballina"
    ismap="ismap"/>

Value

"ismap" is the only value that this attribute can take.

Compatibility

Internet Explorer Firefox Safari Opera Chrome
5.5 6.0 7.0 8.0 1.0 1.5 2.0 3.0 3.5 1.3 2.0 3.1 4.0 9.2 9.5 10.0 2.0
Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full

It causes no compatibility issues, and has excellent support across all tested browsers.

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