react-cntdwn

A simple React component that displays a countdown timer which is customizable.

Installation

npm install --save react-cntdwn

Usage example

Below is an example of how this component might be used.

var Countdown = require('react-cntdwn');
var handleFinish = function () {
  console.log('Skynet has become self-aware!');
}

<Countdown targetDate={new Date('August 29, 1997')}
           startDelay={2000}
           interval={1000}
           timeSeparator={':'}
           leadingZero
           onFinished={handleFinish} />

Props

targetDate

The datetime to count until.

• type: Date
• required

[format]

The format used to display the remaining time. It is an object with keys day, hour, minute, and second.

• type: Object
• optional
• default:

{
  hour: 'HH',
  minute: 'MM',
  second: 'SS'
}

The component uses millisec npm module to convert the remaining time into human a readable format. You can use any format type supported by millisec to customize the output to a great degree.

Find all available formats here.

[startDelay]

The time in millisecond until the countdown begins.

• type: Number
• optional
• default: 0

[interval]

The interval in millisecond for each tick in countdown.

• type: Number
• optional
• default: 1000

[onFinished]

The callback function to be called when the countdown ends.

• type: Function
• optional

[timeSeparator]

The string used to separate the different parts of the time

• type: String
• optional
• default:  

[leadingZero]

Prepends a leading zero onto the time elements for consistant width

• type: Bool
• optional
• default:

Contribution guide

The source code for the component is found in src/cntdwn.jsx. It is using es6 and is compiled using babel before being published to npm.

You may run npm run compile at any time to compile src/cntdwn.jsx to dist/cntdwn.jsx. But most likely you won't need to, because it is run automatically before npm publish.

License

MIT