W programowaniu webowym często pojawia się potrzeba manipulacji datami, na przykład do dodawania lub odejmowania dni, miesięcy czy lat od określonej daty. JavaScript oferuje kilka metod, które ułatwiają te operacje. W tej lekcji omówimy, jak korzystać z obiektu Date w JavaScript do dodawania i odejmowania czasu od danej daty.
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