Coursera - count hours

courseraCountHours.js

const minutes = (elem) => Array.from(elem.querySelectorAll('.rc-WeekItemAnnotations'))
	.map(e => e.innerText.match(/[0-9]+/)[0])
	.map(e => Number(e))
	.reduce((a,b) => a+b, 0)

const minutesPerSection = () => Array.from(document.querySelectorAll('.od-lesson-collection-element'))
	.map(el =>  ({
		section: el.querySelector('.card-headline-text').textContent,
		minutes: minutes(el)
	}))


console.log('all hours', (minutes(document)/60).toFixed(2));
console.log(
	'minutes per section\n',
	minutesPerSection()
		.map(({section, minutes}) => `${section}: ${minutes}`)
		.join("\n")
);