Countdown Component JS

A simple and lightweight library for adding countdowns to the frontend in a declarative way.

Features

• Simple inline setup using HTML attributes.
• Custom display format options.
• Custom update interval.
• Custom callback action.

Setup

NPM

npm i @medilies/countdown-component

import { autoStartCountown } from "@medilies/countdown-component/lib/countdownComponent";

autoStartCountown();

CDN

<script src="https://cdn.jsdelivr.net/gh/medilies/countdown-component.js@0.1.0/dist/countdown-component.js"></script>

<script>
autoStartCountown();
</script>

Usage

Write a div or many with the following attributes.

Attribute	Description
autoCountdown	Starts the countdown on page load	Required
countdown-duration	Sets the countdown duration (an integer in seconds)	Required
countdown-format	Sets the display format (see the formatting table)	Required
countdown-tick-size	Sets the update interval size (a timespan)	Default: 1s
countdown-handler	Takes as value the name the function you defined to call as an action in the end of the countdown	Optional

Note a timespan is a string that is in the format "2m", "1h5s" or "2h20m40s"

Format

key	Output
ss	Seconds with leading zeros 00 through 59
s	Seconds without leading zeros 0 through 59
mm	Minutes with leading zeros 00 to 59
m	Minutes without leading zeros 0 to 59
hh	24-hour format of an hour with leading zeros 00 through 23
h	24-hour format of an hour without leading zeros 0 through 23

Example

See: pen

<div autoCountdown countdown-duration='10' countdown-format='hh:m:s'></div>

<div autoCountdown countdown-duration='13' countdown-format='mm:ss' countdown-handler="reload"></div>

<div autoCountdown countdown-duration='3660' countdown-format='hh:mm:ss' countdown-tick-size='5s'
    countdown-handler="reload"></div>

<script>
    function reload() {
        location.reload();
    }
</script>

<script src='/dist/countdown-component.js'></script>

<script>
    autoStartCountown();
</script>

Todo

1. Add countdowns that start rolling on an event beside those that auto start when the page loads because they have the autoCountdown attribute.
2. Add other types of countdowns display beside the possibility of displaying as a formatted time. For example a progress bar.
3. Share the library through a CDN.
4. Add the possibility to abort the countdown.

Contributing

Any kind of contribution is very welcomed, so feel free to get in touch so I can add you to the repo :)

Help needed to do

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