detect-passive-events
v2.0.3
Published
Detect if the browser supports passive events
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Detect Passive Events
Detects if the browser supports passive event listeners. Tree-shakable and side-effect free. Also available as part of detect-it
.
Note that the code used in the detection is adapted from this Passive Events Explainer.
Using detect-passive-events
npm install --save detect-passive-events
// supportsPassiveEvents is a boolean
import { supportsPassiveEvents } from 'detect-passive-events';
if (supportsPassiveEvents) {
// passive events are supported by the browser
document.addEventListener('scroll', handleScroll, { capture: false, passive: true });
} else {
// passive events are not supported by the browser
document.addEventListener('scroll', handleScroll, false);
}
Or use the script directly in the browser
Optionally, instead using npm install
you can the load the script directly in the browser. A minified UMD version is available from Unpkg for this purpose.
<script src="https://unpkg.com/detect-passive-events@2/dist/detect-passive-events.umd.production.js"></script>
// it will be available on the window as DetectPassiveEvents
if (window.DetectPassiveEvents.supportsPassiveEvents) {
document.addEventListener('scroll', handleScroll, { capture: false, passive: true });
} else {
document.addEventListener('scroll', handleScroll, false);
}