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javascript - 刷新时倒计时再次重新加载

转载 作者:行者123 更新时间:2023-11-28 07:19:13 25 4
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JavaScript 中的倒计时器代码。但刷新页面后又会重新启动。我希望计时器即使重新启动也应该继续。

帮助我解决这个问题,因为我是初学者,这是我的第一个应用程序,我需要您提供一些详细信息。

`
<body>
<div id="divCounter"></div>
<script type="text/javascript">

var hoursleft = 0;
var minutesleft = 35; // you can change these values to any value greater than 0
var secondsleft = 0;

var finishedtext = "Countdown finished!" // text that appears when the countdown reaches 0
var end = new Date();

end.setMinutes(end.getMinutes()+minutesleft);
end.setSeconds(end.getSeconds()+secondsleft);


if(localStorage.getItem("counter")){

var value = localStorage.getItem("counter");

}else{
var value = 0;
}


var counter = function (){


var now = new Date();
var diff = end - now;
diff = new Date(diff);

var sec = diff.getSeconds();
var min = diff.getMinutes();

if (min < 10){
min = "0" + min;
}
if (sec < 10){
sec = "0" + sec;
}

if(now >= end){
clearTimeout(timerID);
document.getElementById('divCounter').innerHTML = finishedtext;
}
else{
var value = min + ":" + sec;
//document.getElementById('divCounter').innerHTML = min + ":" + sec;
localStorage.setItem("counter", JSON.stringify(value));
}

// timerID = setTimeout("cd()", 1000);
// value = JSON.parse(localStorage.getItem("counter"));
//$('#divCounter').append(value);
document.getElementById('divCounter').innerHTML = value;
}





var interval = setInterval(function (){counter();}, 1000);
</script>
</body>
`

最佳答案

倒计时器,无论您想要什么时间。当您刷新页面时,它不会重新启动。

<body>
<div id="divCounter"></div>


<script>
//var hoursleft = 0;
var minutesleft = 0; //give minutes you wish
var secondsleft = 30; // give seconds you wish
var finishedtext = "Countdown finished!";
var end1;
if(localStorage.getItem("end1")) {
end1 = new Date(localStorage.getItem("end1"));
} else {
end1 = new Date();
end1.setMinutes(end1.getMinutes()+minutesleft);
end1.setSeconds(end1.getSeconds()+secondsleft);

}
var counter = function () {
var now = new Date();
var diff = end1 - now;

diff = new Date(diff);

var milliseconds = parseInt((diff%1000)/100)
var sec = parseInt((diff/1000)%60)
var mins = parseInt((diff/(1000*60))%60)
//var hours = parseInt((diff/(1000*60*60))%24);

if (mins < 10) {
mins = "0" + mins;
}
if (sec < 10) {
sec = "0" + sec;
}
if(now >= end1) {
clearTimeout(interval);
// localStorage.setItem("end", null);
localStorage.removeItem("end1");
localStorage.clear();
document.getElementById('divCounter').innerHTML = finishedtext;
if(confirm("TIME UP!"))
window.location.href= "timeup.php";
} else {
var value = mins + ":" + sec;
localStorage.setItem("end1", end1);
document.getElementById('divCounter').innerHTML = value;
}
}
var interval = setInterval(counter, 1000);
</script>
</body>

关于javascript - 刷新时倒计时再次重新加载,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30498312/

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