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The “usemap” attribute in <img> tags is used to associate an image with a client-side image map. This attribute specifies the name or URL of the <map> element that defines clickable regions within the image. Client-side image maps allow users to interact with specific areas of an image by clicking on predefined regions.
Syntax
<img src="image.jpg" usemap="#map_name">
Where,
"image.jpg" is the URL of the image file."#map_name" is the name of the associated <map> element, preceded by a pound sign (#).
Key Point of usemap Attribute
| Key Point |
Description |
| Client-side Image Map |
The “usemap” attribute associates an image with a client-side image map, allowing users to interact with specific regions of the image. |
| Clickable Regions |
The <map> element defines clickable regions within the image, known as hotspots, which users can interact with by clicking. |
| Accessibility |
Client-side image maps provide accessibility benefits by allowing developers to provide alternative text for each hotspot and ensuring keyboard navigation support. |
| Compatibility |
Client-side image maps are widely supported in modern browsers and offer greater flexibility and ease of implementation compared to server-side image maps. |
Features
- Defining Clickable Regions: Define clickable regions within the image using the associated
<map> element, which contains <area> elements defining the coordinates and shape of each hotspot.
- Alternative Text: Provide descriptive alternative text (
alt attribute) for each <area> element to enhance accessibility for users with disabilities or when images are not displayed.
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