@foo-software/react-scroll-context NPM

`@foo-software/react-scroll-context`

React Scroll Context exports a React context provider and consumer. It provides window scroll data to a consumer.

Install

npm

npm install @foo-software/react-scroll-context

yarn

yarn add @foo-software/react-scroll-context

Dependencies

react@16.8

Props

Exposed Context Consumer Data

Usage

Standard

import React from 'react';
import { ScrollProvider } from '@foo-software/react-scroll-context';

// replace `scroll-context` any name you like.
const Context = React.createContext('scroll-context');

const ScrollDisplay = () => (
  <ScrollProvider
    Context={Context}
  >
    <div>
      <h1>Scroll it!</h1>
      <Context.Consumer>
        {({ scrollX, scrollY, isScrollingDown }) => (
          <pre>
            scrollX: {scrollX}
            scrollY: {scrollY}
            isScrollingDown: {isScrollingDown ? 'yes' : 'no'}
          </pre>
        )}
      </Context.Consumer>
    </div>
  </ScrollProvider>
);

Class

import React, { Component } from 'react';
import { ScrollProvider } from '@foo-software/react-scroll-context';

// replace `scroll-context` any name you like.
const Context = React.createContext('scroll-context');

class ScrollDisplay extends Component {
  static contextType = Context;

  render() {
    const { scrollX, scrollY, isScrollingDown } = this.context;
    return (
      <pre>
        scrollX: {scrollX}
        scrollY: {scrollY}
        isScrollingDown: {isScrollingDown ? 'yes' : 'no'}
      </pre>
    );
  }
}

const App = () => (
  <ScrollProvider
    Context={Context}
  >
    <div>
      <h1>Scroll it!</h1>
      <ScrollDisplay />
    </div>
  </ScrollProvider>
);

useContext hook

import React, { useContext } from 'react';
import { ScrollProvider } from '@foo-software/react-scroll-context';

// replace `scroll-context` any name you like.
const Context = React.createContext('scroll-context');

const ScrollDisplay = () => {
  const { scrollX, scrollY, isScrollingDown } = useContext(Context);
  return (
    <pre>
      scrollX: {scrollX}
      scrollY: {scrollY}
      isScrollingDown: {isScrollingDown ? 'yes' : 'no'}
    </pre>
  );
};

const App = () => (
  <ScrollProvider
    Context={Context}
  >
    <div>
      <h1>Scroll it!</h1>
      <ScrollDisplay />
    </div>
  </ScrollProvider>
);

Credits

This package was brought to you by Foo - a website performance monitoring tool. Create a free account with standard performance testing. Automatic website performance testing, uptime checks, charts showing performance metrics by day, month, and year. Foo also provides real time notifications when performance and uptime notifications when changes are detected. Users can integrate email, Slack and PagerDuty notifications.