clockProject/script.js at main · camillamendess/clockProject · GitHub

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const hourHand = document.querySelector(".hand.hours");
const minuteHand = document.querySelector(".hand.minutes");
const secondHand = document.querySelector(".hand.seconds");

const setRotation = (element, rotationPercentage) => {
    element.style.setProperty("--rotation", rotationPercentage * 360);
}

const setClock = () => {
    const currentDate = new Date();

    const secondsPercentage = currentDate.getSeconds() / 60;
    const minutesPercentage = (secondsPercentage + currentDate.getMinutes()) / 60;
    const hoursPercentage = (minutesPercentage + currentDate.getHours()) / 12;

    setRotation(secondHand, secondsPercentage);
    setRotation(minuteHand, minutesPercentage);
    setRotation(hourHand, hoursPercentage);
};

setClock();

setInterval(setClock, 1000);