gpolyn/react-scroll

React Scroll

Component for animating vertical 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

1.7.7

Minor performance improvements

1.7.6

Support targeting elements with className

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

gpolyn / react-scroll

React Scroll

Install

Run

Examples

Usage

Props/Options

Scroll Methods

Scroll events

Create your own Link/Element

Scroll Animations

Changelog

About

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