abonec / react-scroll

React scroll component

React Scroll

Component for basic scrolling and smooth scrolling.

Install

$ npm install react-scroll

Run

$ npm install
$ npm test
$ npm start

Examples

Checkout examples

Code

$ npm start

Usage

// ES6 Imports
import * as Scroll from 'react-scroll';
import { Link, DirectLink, Element , Events, animateScroll as scroll, scrollSpy, scroller } from 'react-scroll'


// Or Access Link,Element,etc as follows
let Link       = Scroll.Link;
let Element    = Scroll.Element;
let Events     = Scroll.Events;
let scroll     = Scroll.animateScroll;
let scrollSpy  = Scroll.scrollSpy;

// ES5
var React   = require('react');
var Scroll  = require('react-scroll');

var Link       = Scroll.Link;
var Element    = Scroll.Element;
var Events     = Scroll.Events;
var scroll     = Scroll.animateScroll;
var scrollSpy  = Scroll.scrollSpy;


var Section = React.createClass({
  componentDidMount: function() {

    Events.scrollEvent.register('begin', function(to, element) {
      console.log("begin", arguments);
    });

    Events.scrollEvent.register('end', function(to, element) {
      console.log("end", arguments);
    });

    scrollSpy.update();

  },
  componentWillUnmount: function() {
    Events.scrollEvent.remove('begin');
    Events.scrollEvent.remove('end');
  },
  scrollToTop: function() {
    scroll.scrollToTop();
  },
  scrollToBottom: function() {
    scroll.scrollToBottom();
  },
  scrollTo: function() {
    scroll.scrollTo(100);
  },
  scrollMore: function() {
    scroll.scrollMore(100);
  },
  handleSetActive: function(to) {
    console.log(to);
  },
  render: function () {
  	return (
      <div>
        <Link activeClass="active" to="test1" spy={true} smooth={true} offset={50} duration={500} onSetActive={this.handleSetActive}>
          Test 1
        </Link>
        <Link activeClass="active" to="test1" spy={true} smooth={true} offset={50} duration={500} delay={1000}>
          Test 2 (delay)
        </Link>
        <Link className="test6" to="anchor" spy={true} smooth={true} duration={500}>
          Test 6 (anchor)
        </Link>
        <Button activeClass="active" className="btn" type="submit" value="Test 2" to="test2" spy={true} smooth={true} offset={50} duration={500} >
          Test 2
        </Button>

        <Element name="test1" className="element">
          test 1
        </Element>

        <Element name="test2" className="element">
          test 2
        </Element>

        <div id="anchor" className="element">
          test 6 (anchor)
        </div>


        <Link to="firstInsideContainer" containerId="containerElement">
          Go to first element inside container
        </Link>

        <Link to="secondInsideContainer" containerId="containerElement">
          Go to second element inside container
        </Link>
        <div className="element" id="containerElement">
          <Element name="firstInsideContainer">
            first element inside container
          </Element>

          <Element name="secondInsideContainer">
            second element inside container
          </Element>
        </div>

        <a onClick={this.scrollToTop}>To the top!</a>
        <br/>
        <a onClick={this.scrollToBottom}>To the bottom!</a>
        <br/>
        <a onClick={this.scrollTo}>Scroll to 100px from the top</a>
        <br/>
        <a onClick={this.scrollMore}>Scroll 100px more from the current position!</a>
      </div>
	);
  }
});

React.render(
  <Section />,
  document.getElementById('example')
);

Props/Options

activeClass - class applied when element is reached

to - target to scroll to

containerId - container to listen for scroll events and to perform scrolling in

spy - make Link selected when scroll is at its targets position

hashSpy - update hash based on spy, containerId has to be set to scroll a specific element.

smooth - animate the scrolling

offset - scroll additional px ( like padding )

duration - time of the scroll animation - can be a number or a function (function (scrollDistanceInPx) { return duration; }), that allows more granular control at run-time

delay - wait x milliseconds before scroll

isDynamic - in case the distance has to be recalculated - if you have content that expands etc.

onSetActive - invoke whenever link is being set to active

onSetInactive - invoke whenever link is lose the active status

ignoreCancelEvents - ignores events which cancel animated scrolling

<Link activeClass="active"
      to="target"
      spy={true}
      smooth={true}
      hashSpy={true}
      offset={50}
      duration={500}
      delay={1000}
      isDynamic={true}
      onSetActive={this.handleSetActive}
      onSetInactive={this.handleSetInactive}
      ignoreCancelEvents={false}
>
  Your name
</Link>

Scroll Methods

Scroll To Top

var Scroll = require('react-scroll');
var scroll = Scroll.animateScroll;

scroll.scrollToTop(options);

Scroll To Bottom

var Scroll = require('react-scroll');
var scroll = Scroll.animateScroll;

scroll.scrollToBottom(options);

Scroll To (position)

var Scroll = require('react-scroll');
var scroll = Scroll.animateScroll;

scroll.scrollTo(100, options);

Scroll To (Element)

animateScroll.scrollTo(positionInPixels, props = {});

var Scroll = require('react-scroll');
var Element = Scroll.Element;
var scroller = Scroll.scroller;

<Element name="myScrollToElement"></Element>

// Somewhere else, even another file
scroller.scrollTo('myScrollToElement', {
  duration: 1500,
  delay: 100,
  smooth: true,
  containerId: 'ContainerElementID',
  offset: 50, // Scrolls to element + 50 pixels down the page
  ...
})

Scroll More (px)

var Scroll = require('react-scroll');
var scroll = Scroll.animateScroll;

scroll.scrollMore(10, options);

Scroll events

begin - start of the scrolling

var Scroll = require('react-scroll');
var Events = Scroll.Events;

Events.scrollEvent.register('begin', function(to, element) {
  console.log("begin", to, element);
});

end - end of the scrolling/animation

Events.scrollEvent.register('end', function(to, element) {
  console.log("end", to, element);
});

Remove events

Events.scrollEvent.remove('begin');
Events.scrollEvent.remove('end');

Create your own Link/Element

Simply just pass your component to one of the high order components (Element/Scroll)

var React   = require('react');
var Scroll  = require('react-scroll');
var ScrollLink = Scroll.ScrollLink;
var ScrollElement = Scroll.ScrollElement;

var Element = React.createClass({
  render: function () {
    return (
      <div {...this.props}>
        {this.props.children}
      </div>
    );
  }
});

module.exports = ScrollElement(Element);

var Link = React.createClass({
  render: function () {
    return (
      <a {...this.props}>
        {this.props.children}
      </a>
    );
  }
});

module.exports = ScrollLink(Link);

Scroll Animations

Add a custom easing animation to the smooth option. This prop will accept a Boolean if you want the default, or any of the animations listed below

scroller.scrollTo('myScrollToElement', {
  duration: 1500,
  delay: 100,
  smooth: "easeInOutQuint",
  containerId: 'ContainerElementID',
  ...
})

List of currently available animations:

linear
	- no easing, no acceleration.
easeInQuad
	- accelerating from zero velocity.
easeOutQuad
	- decelerating to zero velocity.
easeInOutQuad
	- acceleration until halfway, then deceleration.
easeInCubic
	- accelerating from zero velocity.
easeOutCubic
	- decelerating to zero velocity.
easeInOutCubic
	- acceleration until halfway, then deceleration.
easeInQuart
	- accelerating from zero velocity.
easeOutQuart
	- decelerating to zero velocity.
easeInOutQuart
	-  acceleration until halfway, then deceleration.
easeInQuint
	- accelerating from zero velocity.
easeOutQuint
	- decelerating to zero velocity.
easeInOutQuint
	- acceleration until halfway, then deceleration.

A good visual reference can be found at easings.net

Changelog

1.7.5

• Improved performance.

1.7.0

• Deprecated Helpers.js
• Allow mulptiple scrolls
• Support es6/es5 imports.

1.6.5

• Refactored some logic regarding hashspy, now have to set containerId if you want to scroll a specific element.

1.6.3

• Simplified cancelation events
• Now possible to nest containers

1.6.1

• Ability to scroll overflown elements and using hashes for history.

1.5.5

• React v16 support

1.5.4

• Allows testing with jsdom and jest. Uses ref instead of findDOMNode

1.5.3

• Fixes react error

1.5.2

• Fixes the way everything is built and transformed with babel.

1.5.0

• Now using class and extending React.Component to match later versions of react.

v1.4.8

• Additional easings and animations added

v1.4.0

• It's now possible to nest scroll areas and get a callback when "link is active"

v1.3.0

• Remove directlink, now just use Link.

v1.2.0

• Now using passive event listeners.

v1.1.0

• now possible to set initial active link on componentDidMount ( see README or examples code )
• removed unnecessary events for scroll.

v1.0.24

• you can now pass any native property to Link/Element
• patched minor bugs from v1.0.21 > v1.0.24

v1.0.21

• scrollToBottom and scrollMore now works inside a container.

v1.0.20

• Published, somehow the publish failed

v1.0.19

• Property warnings has now been removed.

v1.0.18

• It's now possible to scroll within a container, checkout the code under examples.

v1.0.17

• isDynamic property has been added. To allow scrollSpy to recalculate components that expand