HTMLAreaElement: interestForElement property

Value

An Element object instance, or null if the associated <area> element does not have a target element set.

Examples

Basic interestForElement usage

In this example, we use an <area> element's interestForElement property to set its target element and then retrieve the target element's tagName. The tagName is then printed in the <area> element's text content.

HTML

We include an <area> element and a <div> element. We turn the <div> element into a popover by setting a popover attribute on it.

<map>
  <area href="#" shape="default" />
</map>
<div id="mypopover" popover>I am a <code>&lt;div&gt;</code> element.</div>

map {
  width: 200px;
  height: 100px;
  background-color: pink;
  padding: 5px;
}

JavaScript

We get references to the <area> and <div> elements in script, then declare an interest invoker-target relationship between the <area> and the <div> by setting the <area> element's interestForElement property equal to a reference to the <div>. We then set the <area> element's text content equal to a string containing the target element's tagName, retrieved via invoker.interestForElement.tagName.

const invoker = document.querySelector("area");
const popover = document.querySelector("div");

invoker.interestForElement = popover;

invoker.textContent = `My target is a ${invoker.interestForElement.tagName} element`;

Result

The example renders like this:

Try showing interest in the area (for example, by hovering or focusing it) to make the <div> appear.

Specifications

Browser compatibility

See also

• Using interest invokers
• The Popover API