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scripts-START.js
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49 lines (43 loc) · 1.57 KB
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let countdown;
const displayTime = document.querySelector('.display__time-left');
const endTimeDisplay = document.querySelector('.display__end-time');
const buttons = document.querySelectorAll('.timer__button');
const form = document.querySelector('#custom');
const minutesInput = form.querySelector('input');
function startCoundDown(seconds) {
clearInterval(countdown);
const start = Date.now();
const end = start + (seconds * 1000);
displayEndTime(end);
displayRemainingTime(Math.round(end - start)/1000);
countdown = setInterval(() => {
const now = Date.now();
const timeRemaining = Math.round((end - now) / 1000);
if (timeRemaining < 0) {
clearInterval(countdown);
return;
}
displayRemainingTime(timeRemaining);
}, 1000);
}
function displayRemainingTime(seconds) {
const remainingMinutes = Math.floor(seconds / 60);
const remainingSeconds = seconds % 60;
const text = `${remainingMinutes}:${remainingSeconds < 10 ? '0' : ''}${remainingSeconds}`;
displayTime.textContent = text;
document.title = text;
}
function displayEndTime(end) {
end = new Date(end);
const hours = end.getHours();
const minutes = end.getMinutes();
endTimeDisplay.textContent = `Be back at ${hours}:${minutes > 9 ? '' : '0'}${minutes}`;
}
buttons.forEach(button => button.addEventListener('click', function() {
startCoundDown(this.dataset['time']);
}));
form.addEventListener('submit', (e) => {
e.preventDefault();
startCoundDown(minutesInput.value * 60);
minutesInput.reset();
});