React Inview

Checks if component is inview. Built with vanilla javascript.

Currently in beta, please help contribute!
!Screenshot

Installation

Requires nodejs.

``sh
npm install react-inview-js
`


Options

* showGuides: creates visual indicator of viewport size
* offsetY: range 0 to 1. changes how large the viewport should be. Defaults to 0 which is the full size of browser.
* fullElementInView: boolean(true/false) - false means just the top of the element is in view - good for large elements

Received Props

* this.props.elementIsInView: True/false value based on if element is in view
* this.props.elementHasBeenInView: True/false if the element has been in view

How To Use


`javascript
import React, { Component } from 'react';
import ReactInview from 'react-inview-js';

class MyComponent extends Component {

render () {
const inView = this.props.elementIsInView;
const elementHasBeenInView = this.props.elementHasBeenInView;

// Change classname based on boolean
const viewClassName = (inView)? 'is--inview-true' : 'is--inview-false';
const elementHasBeenInView = (elementHasBeenInView)? 'Element has been seen' : 'Element has not been in view';

return (

React InView -- { elementHasBeenInView }

);
}
}

const InviewOptions = {offsetY: 0.8, showGuides: true, fullElementInView: false}

export default ReactInview(InviewOptions)(MyComponent);

`


Example

`
npm install && npm install react react-dom && npm start
``