[@_@?] 倒數計時器實作 發表於 2024-04-25 更新於 2024-04-27 參考資料 How to Create an Animated Countdown Timer With HTML, CSS and JavaScript See the Pen <a target="_blank" rel="noopener" href="https://codepen.io/geoffgraham/pen/yLywVbW"> JS Countdown Timer</a> by Geoff Graham (<a target="_blank" rel="noopener" href="https://codepen.io/geoffgraham">@geoffgraham</a>) on <a target="_blank" rel="noopener" href="https://codepen.io">CodePen</a>.