sweet-scroll

sweet-scroll.js

Modern and the sweet smooth scroll library.

View Demo

FEATURES

• Dependecy-free!!
• ECMAScript 2015(ES6) frendly
• Use requestAnimationFrame API (IE9 works in setTimeout instead)
• Supports vertical and horizontal scroll
• Supports dynamic trigger (event delegation)
• Supports container for the scroll

USAGE

1. Install

via NPM

$ npm install sweet-scroll

use

import SweetScroll from "sweet-scroll"

via MANUAL

1. Download the sweet-scroll.min.js
2. Load it in the script tag.

<script src="sweet-scroll.min.js"></script>

2. Setup of HTML

<a href="#intro" data-scroll>Go to Introduction</a>
...
<div id="intro">Introduction</div>

3. Initialize SweetScroll

const sweetScroll = new SweetScroll({/* some options */});

OPTIONS

The following options are applied by default. It can be customized as needed.

{
  trigger: "[data-scroll]",       // Selector for trigger (must be a valid css selector)
  header: "[data-scroll-header]", // Selector for fixed header (must be a valid css selector)
  duration: 1000,                 // Specifies animation duration in integer
  delay: 0,                       // Specifies timer for delaying the execution of the scroll in milliseconds.
  easing: "easeOutQuint",         // Specifies the pattern of easing
  offset: 0,                      // Specifies the value to offset the scroll position in pixels
  verticalScroll: true,           // Enable the vertical scroll
  horizontalScroll: false,        // Enable the horizontal scroll
  stopScroll: true,               // When fired wheel or touchstart events to stop scrolling

  // Callbacks
  beforeScroll: null,
  afterScroll: null,
  cancelScroll: null
}

Easings

Supports the following easing.

• Normal
  • linear
• Quad
  • easeInQuad
  • easeOutQuad
  • easeInOutQuad
• Cubic
  • easeInCubic
  • easeOutCubic
  • easeInOutCubic
• Quart
  • easeInQuart
  • easeOutQuart
  • easeInOutQuart
• Quint
  • easeInQuint
  • easeOutQuint (default)
  • easeInOutQuint
• Sine
  • easeInSine
  • easeOutSine
  • easeInOutSine
• Expo
  • easeInExpo
  • easeOutExpo
  • easeInOutExpo
• Circ
  • easeInCirc
  • easeOutCirc
  • easeInOutCirc
• Elastic
  • easeInElastic
  • easeOutElastic
  • easeInOutElastic
• Back
  • easeInBack
  • easeOutBack
  • easeInOutBack
• Bounce
  • easeInBounce
  • easeOutBounce
  • easeInOutBounce

Live demo

Specifies the container

In the following example we have specified in the container for scrolling the #container.

<div id="container">
  <a href="#heading2" data-scroll>Go to Heading2</a>
  ...
  <h2 id="heading2">Heading2</h2>
</div>

const sweetScroll = new SweetScroll({/* some options */}, "#container");

Specifies a fixed header

Add the data-scroll-header attribute in order to offset the height of the fixed header.

<header data-scroll-header></header>

Specify the CSS Selector in header option instead of the data-scroll-header attribute.

const sweetScroll = new SweetScroll({
  header: "#header"
});

Override of options for each element

You can override the default options by passing the option in JSON format to the data-scroll-options.

<a href="#target" data-scroll data-scroll-options='{"easing": "easeOutBounce"}'>Go to Target</a>

API

• new SweetScroll(options = {}, container = "body, html")
• to(distance, options = {})
• toTop(distance, options = {})
• toLeft(distance, options = {})
• destroy()

distance to can specify the CSS Selector or scroll position.

Example:

const SweetScroll = new SweetScroll();

// CSS Selector of target element
sweetScroll.to("#footer");

// Object
sweetScroll.to({top: 1000, left: 20});

// Array (top:0, left:1000)
sweetScroll.to([0, 1000]);

// Number (Priority to vertical scroll position. by default.)
sweetScroll.to(500);

// String (Like object syntax)
sweetScroll.to("top: 500, left: 100");

// String (Relative position)
sweetScroll.to("+=500")
sweetScroll.to("-=200")

BROWSER SUPPORT

Works in IE9+, and all modern browsers.

LICENCE

Released under the MIT Licence

AUTHOR

tsuyoshiwada

DEVELOPMENT

Initialization of the project.

$ cd /your/project/dir
$ git clone https://github.com/tsuyoshiwada/sweet-scroll.git

Install some dependencies.

$ npm install

Start the development.
You I can access the http://localhost:3000/.

$ npm start

Run lint and testing.

$ npm test

Generates build file.

$ npm run build