timeline-range-slider

A lightweight, dependency-free range slider

The default configuration gives you a slider with a collapsible timeline:

Features & Benefits

Features:

A mobile-friendly range slider,
With a collapsible events timeline to list events which occurred at each index in the slider,
With tooltips for deeper explanations of the summaries

Benefits:

Vanilla Javascript & CSS
No external libraries: no jQuery, bootstrap, Sass, etc
Simple javascript configuration with sane defaults
Simple, easy-to-override CSS
Permissive license

Examples

#1: Default

#2: Dark theme

#3: Small and continuous

#4: Variable tick text

Usage

Installation

Pick what works for your setup:

npm i @artoonie/timeline-range-slider
Download assets from github package
Just download the files in the timeline-range-slider directory. Go on. I won’t judge you.

Usage

API: Vanilla Javascript

If you’re not using node.js, functions begin with trs_ namespace to avoid conflicts:

Include the files in your HTML and create a wrapper div:

<link rel="stylesheet" href="slider.css">
<script type="text/javascript" src="slider.js"></script>
<div id="slide"></div>

Create a slider by calling:

const config = {wrapperDivId: 'slide', numTicks: 10}
trs_createSliderAndTimeline(config);

additional config options are described below.

You can a slider value manually by calling:

trs_setSliderValue('slide', 5);

You can animate a slider to have it move front-to-back with

Hide the timeline with:

trs_toggleTimelineVisibility('slide');

API: Using node.js

HTML:

const slider = require('./timeline-range-slider/slider.js');
require('./timeline-range-slider/slider.css');

<div id="slide"></div>

Javascript:

slider.createSliderAndTimeline(config);
slider.setSliderValue('slide', 5);
slider.animate('slide');
slider.toggleTimelineVisibility('slide');

Configuration options

The config dictionary has the following options:

key/default	description
`wrapperDivId`* required	The div id in which to place the slider
`numTicks`* required	The number of elements in the slider
`width` default: `600`	The maximum width of the slider. If the page is narrower than this, the slider will responsively scale.
`hideTimelineInitially` default: `true`	Whether or not the timeline is initially expanded or collapsed
`tickLabelPrefix` default: `'Round '`	What does each tick represent? Placed in the header row of the timeline.
`hideActiveTickText` default: `false`	Should we hide `tickText` on the active tick? By default, we hide the text and show a slider via CSS. Only change this if you override the CSS for the active tick.
`tickText` default: `'•'`	The text that marks a tick in the slider. Can be a single string or a list. If it’s a list, must be the size of numTicks.
`color` default: `'orangered'`	The color of past tick marks. Can be a single string or a list. If it’s a list, must be of size numTicks.
`sliderValueChanged` default: `null`	Callback to be notified when the slider changes.
`animateOnLoad` default: `false`	Should the slider animate all steps on load?
`timeBetweenStepsMs` default: `1s/numTicks`	How fast should the animation run?
`timelinePeeking` default: `true`	Should the timeline “peek open” during animation, and close after the animation completes?
`timelineData` default: random data	The timeline data. See below for how to structure this.
`leftArrowText` default: `<`	What text to place in the left arrow button?
`rightArrowText` default: `<`	What text to place in the right arrow button?

Timeline data structure

The timelineData contains the events that occurred at each “tick” in the timeline. It is a list of lists. Each of the numTicks elements contains a list of events. A single event is structured as follows:

const oneTimelineItem = {
  summaryText: "Short summary",

  /* optional */
  className: "custom-class-for-summary-label",

  /* optional */
  moreInfoText: "Description to show when hovering" 
}

Each “tick” can have multiple events (or zero events).

A complete timelineData structure might look like:

const timelineData = [
    [
        {summaryText: "Event 1, tick 1"},
        {summaryText: "Event 2, tick 1"}
    ],
    [
        {summaryText: "Event 1, tick 2",
         className: "some-class"}
    ],
    [ /* No events in tick 3 */
    ],
    [
        {summaryText: "Event 1, tick 4"},
        {summaryText: "Event 2, tick 4"},
        {summaryText: "Event 3, tick 4",
         moreInfoText: "a long description"}
    ]
]