<input id="countdown" type="text" value="140时50分20秒">
<script>
var oCountdown = document.getElementById("countdown"),
nowStamps = Date.now() - 100, // 服务器当前时间
endStamps = Date.now() + 50000 - 100, // 活动结束时间戳
diff = nowStamps - Date.now(); // 本地时间和服务器时间差
function updateCountdown(nowStamps) {
var timeLeft = (endStamps - nowStamps)/1000,
hour = parseInt(timeLeft/3600),
minute = parseInt(timeLeft%3600/60),
seconds = parseInt(timeLeft%60);
oCountdown.value = hour + "时" + minute + "分" + seconds + "秒";
return timeLeft;
}
function run() {
nowStamps = Date.now() + diff; // 服务器当前时间
if (updateCountdown(nowStamps) > 0) { // 更新倒计时时间
setTimeout(run, 100); // fix + 100 调整误差
} else {
oCountdown.value = "活动已结束";
}
}
setTimeout(run, 100);
</script>
js倒计时功能的相关教程结束。
