A code to get the total time of a platzi course from the course page

getTotalTimePlatziCourse.js

const getArrayOfTimes = (timesHtml) => {
    return [...timesHtml]
    .map(x => x.innerText)
    .map(x => {
        const values = x.split(':',5);
        return {
            minutes: parseInt(values[0]),
            seconds: parseInt(values[1]),
        };
    });
}

const reducer = (accumulator, currentValue) => { 
    return {
        minutes: accumulator.minutes + currentValue.minutes,
        seconds: accumulator.seconds + currentValue.seconds,
    };
};

const sumMinsAndSeconds = ({minutes, seconds}) => {
    minutes = minutes + Math.floor(seconds / 60);
    hours = Math.floor(minutes / 60);
    return {
        hours,
        minutes: minutes % 60,
        seconds: seconds % 60,
    };
};

const getTotalTime = () => {
    const timesHtml = document.getElementsByClassName("MaterialItem-copy-time");
    const times = getArrayOfTimes(timesHtml);
    const totalTime = sumMinsAndSeconds(times.reduce(reducer));
    
    console.log(`${totalTime.hours}:${totalTime.minutes}:${totalTime.seconds} (hh:mm:ss)`);
};

getTotalTime()