20 lines
512 B
TypeScript
20 lines
512 B
TypeScript
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export function calculateAge(start: Date, end = new Date()) {
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if (start.getTime() > end.getTime()) return;
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let year = end.getFullYear() - start.getFullYear();
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let month = end.getMonth() - start.getMonth();
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let day = end.getDate() - start.getDate();
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if (month < 0) year -= 1;
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if (month < 0) month += 12;
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if (day < 0) {
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month -= 1;
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day =
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new Date(start.getFullYear(), start.getMonth(), 0).getDate() -
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start.getDate() +
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end.getDate();
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}
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return { year, month, day };
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}
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