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Open for signals HTML

Interest invokers

Interest invokers, registered by the interestfor HTML attribute, trigger events and actions on a target element when a user shows interest in the element, through behaviors such as hover, focus, or long-press. Pseudo-elements apply styles to sources and targets of interest.

Modern Web Guidance

How Modern Web Guidance uses this feature

Shows preview popovers and rich hovercards on hover or focus using declarative interestfor and interestaction attributes with built-in dismiss mechanics.

Recommended fallback strategy

For browsers lacking declarative interestfor support, load the @oddbird/interestfor polyfill conditionally or listen for standard focus, blur, pointerenter, and pointerleave events.

Related use cases

Summary synthesized from Modern Web Guidance (opens in new tab). Read the related use cases for full, human-authored guidance.

Community use cases (1)

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Strict feedback template: Please be as concrete as possible. Specific examples from your production apps or projects provide the highest-value signal to standards editors and browser engineers.
Add your specific real-world use cases, even if they seem obvious to you.
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Are you having to use another feature instead, a polyfill, or is it blocking you completely? Why are the alternatives worse?
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