js challenge day 291 js challenge day 29 Timer Code let countdown; const timerDisplay = document.querySelector(".display__time-left"); const endTime = document.querySelector(".display__end-time"); const buttons = document.querySelectorAll("[data-time]"); const timer = (seconds) => { clearInterval(countdown); const now = Date.now(); const then = now + seconds * 1000; displayTimeLeft(seconds); displayEndTime(then); countdown = setInterva.. 2023. 3. 6. 이전 1 다음 반응형