Package Exports

react-visibility-sensor

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Readme

React Visibility Sensor

Sensor component for React that notifies you when it goes in or out of the window viewport.

Install

npm install react-visibility-sensor

Example

View the example

To run the example locally:

npm run build-example
open example/index.html in a browser

General usage goes something like:

function render () {
  var VisibilitySensor = require('react-visibility-sensor');

  var onChange = function (isVisible) {
    console.log('Element is now %s', isVisible ? 'visible' : 'hidden');
  };

  return (
    <VisibilitySensor onChange={onChange} />
  );
}

Props

onChange: callback for whenever the element changes from being within the window viewport or not. Function is called with 1 argument (isVisible: boolean)
active: (default true) boolean flag for enabling / disabling the sensor. When active !== true the sensor will not fire the onChange callback.
partialVisibility: (default false) consider element visible if only part of it is visible.
delay: (default 1000) integer, number of milliseconds between checking the element's position in relation the the window viewport. Making this number too low will have a negative impact on performance.
containment: (optional) element to use as a viewport when checking visibility. Default behaviour is to use the browser window as viewport.

Thanks

Special thanks to contributors:

License

MIT