Time Calculator

index.html

<h1 id="result"></h1>

script.js

'use strict'

const data = '1:10 12:15 6:43 1:08 4:27 13:09 23 11:50 5:48 8:1 23 2:38 9:44 9:4 8:7 10:56 5:32 11:10 5:15 3:05 6:27 4:39 2:13 16 3:15 4:29 25'

/**
*	Converts string representation of hours, minutes and seconds to seconds
* 
*	@param {string | number} seconds
* @param {string | number} minutes - default 0
* @param {string | number} hours	- default 0
* @return {number} - total number of seconds
*/
function toSeconds(seconds, minutes = 0, hours = 0) {
	return parseInt(seconds) +
		parseInt(minutes) * 60 +
		parseInt(hours) * 3600
}

/**
* Pads value with specified number of characters
* 
* @param {string} symbol	- char that pad value needs to be padded with
* @param {number} length	- total length of the string including padding
* @param {number} value		- value to be padded
* @return {string}				- padded result
*/
function pad(symbol, length) {
	return function(value) {
		return ((new Array(length)).join(symbol) + value).slice(-length)
	}
}

const twoZerosPad = pad('0', 2)
const timePad = (time) => twoZerosPad(time)

/**
* Converts total number of seconds to hours minutes and seconds
*
* @param	{number} seconds - total number of seconds
* @return {{hours: number, minutes: number, seconds: number}}
*/
function secondsToTime(seconds) {
	return {
		hours: Math.floor(seconds / 3600),
		minutes: Math.floor((seconds % 3600) / 60),
		seconds: seconds % 60
	}
}

/**
* Prints out result
* @param {{hours: number, minutes: number, seconds: number}} - time
*/
function print(result) {
	const message = `Total time: ${timePad(result.hours)}:${timePad(result.minutes)}:${timePad(result.seconds)}`

	console.log(message)
	document.querySelector('#result').innerHTML = message
}

const resultInSeconds = data
	.split(' ')
	.filter(x => x.trim())
	.map(t => toSeconds(...t.split(':').reverse()))
	.reduce((a, c) => (a += c), 0)

print(secondsToTime(resultInSeconds))

time-calculator.markdown

Time Calculator

Calculates total time from string of time, such as '1:10:20 30:05 16' Accepted time: HH:MM:SS, MM:SS, SS. One digit for hours, minutes or seconds is excepted.

A Pen by Vlad Bezden on CodePen.

License.