0
function timer()
{
\t var currentTime = new Date()
\t var hours = currentTime.getHours()
\t var minutes = currentTime.getMinutes()
\t var seconds = currentTime.getSeconds()
\t if (minutes < 10)
\t {
\t \t minutes = "0" + minutes
\t }
\t
\t if (hours < 6)
\t {
\t \t var hoursLeft = 5 – hours;
\t \t var minsLeft = 60 – minutes;
\t \t
\t \t if(minsLeft==60)
\t \t {
\t \t \t minsLeft=0;
\t \t \t hoursLeft++;
\t \t }
\t var secsLeft = 60 – seconds;
\t
\t \t if(secsLeft==60)
\t \t {
\t \t \t secsLeft=0;
\t \t \t minsLeft++;
\t \t }
\t }
\t else if (hours < 18)
\t {
\t \t var hoursLeft = 17 – hours;
\t \t var minsLeft = 60 – minutes;
\t \t
\t \t if(minsLeft==60)
\t \t {
\t \t \t minsLeft=0;
\t \t \t hoursLeft++;
\t \t }
\t \t var secsLeft = 60 – seconds;
\t \t
\t \t if(secsLeft==60)
\t \t {
\t \t \t secsLeft=0;
minsLeft++;
\t \t }
\t }
\t
\t else if (hours < 24)
\t {
\t \t var hoursLeft = 29 – hours;
\t \t var minsLeft = 60 – minutes;
\t \t
\t \t if(minsLeft==60)
\t \t {
\t \t \t minsLeft=0;
\t \t \t hoursLeft++;
\t \t }
\t \t
\t \t var secsLeft = 60 – seconds;
\t \t
\t \t if(secsLeft==60)
\t \t {
\t \t \t secsLeft=0;
\t \t \t minsLeft++;
\t \t }
\t }
\t
\t else if (hours == 6)
\t {
\t \t var xmlhttp = new XMLHttpRequest();
\t \t xmlhttp.open("reset.html", true);
\t \t xmlhttp.send();
\t }
\t
\t else if (hours == 18)
\t {
\t \t var xmlhttp = new XMLHttpRequest();
\t \t xmlhttp.open("reset.html", true);
\t \t xmlhttp.send();
\t }
\t
\t else
\t {
\t \t document.write("Error, please contact admin");
\t }
\t document.getElementById('timerUpFront').innerHTML= hoursLeft + " hours " + minsLeft + " minutes " + secsLeft + " seconds";
}
\t var countdownTimer = setInterval('timer()', 1000);#timerUpFront
{
\t color:#009DE3;
}
#timer
{
font-family: "Comic Sans MS", cursive, sans-serif;
margin-top: 20px;
font-size:36px;
text-align:center;
}
#button
{
\t background-color:#008CFF;
\t font-family:Segoe, "Segoe UI", "DejaVu Sans", "Trebuchet MS", Verdana, sans-serif;
\t font-size:26px;
\t width:160px;
\t padding: 10px;
\t margin: 2em auto;
\t margin-top: 10px;
}<html>
<head>
<title>Timer</title>
</head>
<body>
<div id="timer">
<span id="timerUpFront"></span>
<br><br>
<div id="button">
<center><a href="reset.html" style="text-decoration:none">Reset</a></center>
</div>
</div>
</body>
</html>試圖創建一個自動化的倒計時器應該重置自回一次達到0:00:00或者一旦按下按鈕，但不會重置頁面刷新。 我一直在嘗試幾個小時，但無法讓計時器顯示，在.js文件中找不到任何錯誤。因爲我最後的選擇必須在本網站上提問。