32 lines
967 B
JavaScript
32 lines
967 B
JavaScript
function animate(element, end, duration = 500) {
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var element = document.getElementById(element);
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const startTime = performance.now();
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// Cubic easing function: slows down at the start and end
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const easeInOutCubic = (t) =>
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t < 0.5 ? 4 * t * t * t : (t - 1) * (2 * t - 2) * (2 * t - 2) + 1;
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const updateCount = (currentTime) => {
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const elapsedTime = currentTime - startTime;
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let progress = elapsedTime / duration;
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// Clamp progress to ensure it doesn't overshoot
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if (progress > 1) progress = 1;
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// Apply easing curve to progress
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const easedProgress = easeInOutCubic(progress);
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// Calculate current value and round to integer
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const currentCount = Math.round(end * easedProgress * 100) / 100;
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element.innerHTML = currentCount;
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if (progress < 1) {
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requestAnimationFrame(updateCount);
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}
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};
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requestAnimationFrame(updateCount);
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}
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