react-intersection-visible

HOC-wrapper Component that helps you track when an element enters in the viewport. It uses the new IntersectionObserver API with polyfill fallback

Demo

How to use

1. Import IntersectionVisible hoc component
2. Wrap your main component with the IntersectionVisible
3. Provide the options and callbacks you want

Example

import React, { Component }   from 'react';
import ReactDOM               from 'react-dom';
import IntersectionVisible    from 'react-intersection-visible';

class YourComponent extends Component
{

    onHide( entries )
    {
        // do something
    }

    onShow( entries )
    {
        // do something
    }

    onIntersect( entries )
    {
        // do something
    }

    render(){
        return (<IntersectionVisible onIntersect={ e => this.onIntersect( e ) }
                                     onHide={ e => this.onHide( e ) }
                                     onShow={ e => this.onShow( e ) }>
                    <div>
                        blah blah blah  blah blah blah  blah blah blah  blah blah
                          blah blah blah  blah blah blah  blah blah blah
                    </div>
                </IntersectionVisible>);
    }
}

Options:

| Name | Description | ------------- |-------------:| | onIntersect | Function that is called when the visibility status of the element change | | onHide | Function that is called when the element becomes invisible | | onShow | Function that is called when the element becomes visible | | options | Object, with the extras options supported by the IntersectionObserver API (root, rootMargin, threshold)|

More about the options here

Contribute

Any pull-request is more than welcome :boom: :smile:

License

MIT