Countdown Timer to a Target Date (Vanilla JavaScript)
A days/hours/minutes/seconds countdown card driven by plain setInterval and Date math - no library. Ships with an editable datetime-local input so visitors can point it at any future date (handy for product launches, sales, or event pages); it auto-restarts the interval when the target changes and freezes at 00:00:00:00 with a finished state when time runs out. An aria-live region announces the target and the finish event without spamming screen readers every second.
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2026
