• 漫画・コミック読むならまんが王国
• お得情報・キャンペーン

'; // カウントダウンタイマーの定義 // 参考記事：https://ginneko-atelier.com/blogs/entry463/ const goal = new Date("// ::"); let count; function countDown(goal) { const now = new Date(); const left = goal.getTime() - now.getTime(); if (left > 0) { let sec = Math.floor(left / 1000) % 60; sec = ('0' + sec).slice(-2); let min = Math.floor(left / 1000 / 60) % 60; min = ('0' + min).slice(-2); let hours = Math.floor(left / 1000 / 60 / 60); hours = ('0' + hours).slice(-2); count = { hours: hours, min: min, sec: sec }; } else { count = { hours: '00', min: '00', sec: '00' }; } return count; } // タイマー処理 function setCountDown() { let counter = countDown(goal); let end = 0; const countDownTimer = setTimeout(setCountDown, 1000); for (let item in counter) { document.getElementById(item).textContent = counter[item]; end += parseInt(counter[item]); } if (end === 0) { clearTimeout(countDownTimer); } } // タイマー開始 setCountDown(); } });