Snap Touch

A touch enabled slider for horizontal navigation. This slider calculates velocity to decelerate when flicked and will snap to an element when finished.

View demo

How To Use

Install with NPM

npm install snap-touch --save

Use a CDN

https://unpkg.com/snap-touch/snap-touch.js
https://unpkg.com/snap-touch/snap-touch.min.js

Features

• No dependencies
• Modern JavaScript (ES6)
• IE9+ compatible
• Responsive

Example

<div id="slider" class="slider">
    <div class="slides">
        <div class="slide"></div>
        <div class="slide"></div>
        <div class="slide"></div>
        <div class="slide"></div>
        <div class="slide"></div>
    </div>
</div>

new SnapTouch('slider').create();

.slider {
    overflow: hidden;
    padding-left: 50%;
    padding-right: 50%;
}

.slides {
    margin-left: -100px;
    margin-right: -100px;
    white-space: nowrap;
    font-size: 0;
}

.slide {
    display: inline-block;
    width: 200px;
    height: 200px;
    box-sizing: border-box;
    border: 2px solid white;
    background: black;
}

Methods

NAME	PARAMETERS	TYPE	DESCRIPTION
create
destroy
getActiveIndex
setActiveIndex	index	(int)	The index of the slide to activate.
getGosition
setPosition	posX	(number)	The slider position to set in pixels.

Example:

const slider = new SnapTouch('slider').create();
slider.setActiveIndex(2);

Events

NAME	PARAMETERS	TYPE	DESCRIPTION
SnapTouch.created
SnapTouch.destroyed
SnapTouch.activeIndexChanged	index	(int)	The index of the current slide.
SnapTouch.trackingStart
SnapTouch.trackingEnd
SnapTouch.tracking	now	(number)	The time in milliseconds.
	timeElapsed	(number)	Time elapsed since last tracking step in milliseconds.
	delta	(number)	Difference between the last position and the current.
	velocity	(number)	The calculated velocity based on delta.
	posX	(number)	The current position in pixels.
	lastPosX	(number)	The last tracking step position in pixels.
	lastTimestamp	(number)	The last tracking step time in milliseconds.
SnapTouch.positionChanged	posX	(number)	The current position in pixels.
SnapTouch.easePositionEnd	posX	(number)	The current position in pixels.
SnapTouch.resized	slideWidth	(number)	The width of an individual slide in pixels.
	slideTotal	(int)	The total number of slides.

Example:

const slider = new SnapTouch('slider').create();
slider.addEventListener(
    'SnapTouch.positionChanged',
    function (event) {
        console.log('posX: ' + event.detail.posX);
    }
);