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class CustomCountdown extends HTMLElement {
constructor() {
super();
this.date = this.getAttribute('date');
}
connectedCallback() {
this.attachShadow({ mode: 'open' });
this.render();
this.startCountdown();
}
render() {
this.shadowRoot.innerHTML = `
<style>
.countdown-container {
display: flex;
justify-content: center;
gap: 1rem;
}
.countdown-box {
background: rgba(255, 255, 255, 0.2);
border-radius: 8px;
padding: 1rem;
min-width: 80px;
text-align: center;
backdrop-filter: blur(5px);
}
.countdown-number {
font-size: 2.5rem;
font-weight: bold;
margin-bottom: 0.5rem;
}
.countdown-label {
font-size: 0.875rem;
text-transform: uppercase;
opacity: 0.8;
}
@media (max-width: 640px) {
.countdown-box {
min-width: 60px;
padding: 0.5rem;
}
.countdown-number {
font-size: 1.75rem;
}
}
</style>
<div class="countdown-container">
<div class="countdown-box">
<div class="countdown-number" id="days">00</div>
<div class="countdown-label">Days</div>
</div>
<div class="countdown-box">
<div class="countdown-number" id="hours">00</div>
<div class="countdown-label">Hours</div>
</div>
<div class="countdown-box">
<div class="countdown-number" id="minutes">00</div>
<div class="countdown-label">Minutes</div>
</div>
<div class="countdown-box">
<div class="countdown-number" id="seconds">00</div>
<div class="countdown-label">Seconds</div>
</div>
</div>
`;
}
startCountdown() {
const countdownDate = new Date(this.date).getTime();
const updateCountdown = () => {
const now = new Date().getTime();
const distance = countdownDate - now;
if (distance < 0) {
this.shadowRoot.querySelector('#days').textContent = '00';
this.shadowRoot.querySelector('#hours').textContent = '00';
this.shadowRoot.querySelector('#minutes').textContent = '00';
this.shadowRoot.querySelector('#seconds').textContent = '00';
return;
}
const days = Math.floor(distance / (1000 * 60 * 60 * 24));
const hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
const minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
const seconds = Math.floor((distance % (1000 * 60)) / 1000);
this.shadowRoot.querySelector('#days').textContent = days.toString().padStart(2, '0');
this.shadowRoot.querySelector('#hours').textContent = hours.toString().padStart(2, '0');
this.shadowRoot.querySelector('#minutes').textContent = minutes.toString().padStart(2, '0');
this.shadowRoot.querySelector('#seconds').textContent = seconds.toString().padStart(2, '0');
};
updateCountdown();
setInterval(updateCountdown, 1000);
}
}
customElements.define('custom-countdown', CustomCountdown); |