Javascript 刷新时重新加载倒计时计时器
javascript中的倒计时计时器代码。但当页面刷新时,它会再次重新启动。我希望计时器应该继续,即使它重新启动 帮助我处理这个问题,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的输入Javascript 刷新时重新加载倒计时计时器,javascript,php,web-applications,countdowntimer,web-application-design,Javascript,Php,Web Applications,Countdowntimer,Web Application Design,javascript中的倒计时计时器代码。但当页面刷新时,它会再次重新启动。我希望计时器应该继续,即使它重新启动 帮助我处理这个问题,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的输入 ` <body> <div id="divCounter"></div> <script type="text/javascript"> var hoursleft = 0; var minutesleft = 35; // y
`
<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"));
//$('#divCounter').append(value);
document.getElementById('divCounter').innerHTML = value;
}
var interval = setInterval(function (){counter();}, 1000);
</script>
</body>
`
`
var hoursleft=0;
var minutesleft=35;//可以将这些值更改为大于0的任何值
var secondsleft=0;
var finishedtext=“倒计时完成!”//倒计时达到0时显示的文本
var end=新日期();
end.setMinutes(end.getMinutes()+minutesleft);
end.setSeconds(end.getSeconds()+secondsleft);
if(localStorage.getItem(“计数器”)){
var值=localStorage.getItem(“计数器”);
}否则{
var值=0;
}
变量计数器=函数(){
var now=新日期();
var diff=结束-现在;
diff=新日期(diff);
var sec=diff.getSeconds();
var min=diff.getMinutes();
如果(最小值<10){
最小值=“0”+最小值;
}
如果(第10节){
秒=“0”+秒;
}
如果(现在>=结束){
清除超时(timerID);
document.getElementById('divCounter')。innerHTML=finishedtext;
}
否则{
var值=分钟+“:”+秒;
//document.getElementById('divCounter')。innerHTML=min+“:”+sec;
setItem(“counter”,JSON.stringify(value));
}
//timerID=setTimeout(“cd()”,1000);
//value=JSON.parse(localStorage.getItem(“计数器”);
//$('#divCounter')。追加(值);
document.getElementById('divCounter')。innerHTML=value;
}
var interval=setInterval(函数(){counter();},1000);
`
您需要将计时器值存储在cookie中
刷新后,检查cookie是否已设置,如果已设置,则获取值并将其设置为计时器的初始时间,
否则从0开始,这里您要做的是设置要倒计时的日期/时间,获取当前用户的日期/时间,然后计算要倒计时的差值 以下内容将帮助您朝着正确的方向前进:
var date = new Date(Date.UTC(2015, 5, 28, 12, 0, 0));
var now = new Date();
var diff = date.getTime()/1000 - now.getTime()/1000;
虽然您正在从本地存储器中读取值变量,但实际上并没有将结束时间和现在时间设置为它们的旧值,因此它们会被重置,也会重置值变量。您还应该将这些值存储在内存中,并在刷新页面时加载它们 这是完成的、功能齐全的优化代码。现在应该可以了
<body>
<div id="divCounter"></div>
<script>
var hoursleft = 0;
var minutesleft = 35;
var secondsleft = 0;
var finishedtext = "Countdown finished!";
var end;
if(localStorage.getItem("end")) {
end = new Date(localStorage.getItem("end"));
} else {
end = new Date();
end.setMinutes(end.getMinutes()+minutesleft);
end.setSeconds(end.getSeconds()+secondsleft);
}
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(interval);
localStorage.setItem("end", null)
document.getElementById('divCounter').innerHTML = finishedtext;
} else {
var value = min + ":" + sec;
localStorage.setItem("end", end);
document.getElementById('divCounter').innerHTML = value;
}
}
var interval = setInterval(counter, 1000);
</script>
</body>
var hoursleft=0;
var minutesleft=35;
var secondsleft=0;
var finishedtext=“倒计时完成!”;
var端;
if(localStorage.getItem(“end”)){
end=新日期(localStorage.getItem(“end”);
}否则{
结束=新日期();
end.setMinutes(end.getMinutes()+minutesleft);
end.setSeconds(end.getSeconds()+secondsleft);
}
变量计数器=函数(){
var now=新日期();
var diff=结束-现在;
diff=新日期(diff);
var sec=diff.getSeconds();
var min=diff.getMinutes();
如果(最小值<10){
最小值=“0”+最小值;
}
如果(秒<10){
秒=“0”+秒;
}
如果(现在>=end){
清除超时(间隔);
setItem(“结束”,null)
document.getElementById('divCounter')。innerHTML=finishedtext;
}否则{
var值=分钟+“:”+秒;
setItem(“结束”,结束);
document.getElementById('divCounter')。innerHTML=value;
}
}
var间隔=设置间隔(计数器,1000);
倒计时,您可以选择任何时间。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>
//var hoursleft=0;
var minutesleft=0//给你想要的分钟
var secondsleft=30;//给你想要的几秒钟
var finishedtext=“倒计时完成!”;
var end1;
if(localStorage.getItem(“end1”)){
end1=新日期(localStorage.getItem(“end1”);
}否则{
end1=新日期();
end1.setMinutes(end1.getMinutes()+minutesleft);
end1.setSeconds(end1.getSeconds()+secondsleft);
}
变量计数器=函数(){
var now=新日期();
var diff=end1-现在;
diff=新日期(diff);
var毫秒=parseInt((差异%1000)/100)
var sec=parseInt((差异/1000)%60)
var mins=parseInt((差/(1000*60))%60)
//var小时=parseInt((差/(1000*60*60))%24);
如果(分钟<10){
分钟=“0”+分钟;
}
如果(秒<10){
秒=“0”+秒;
}
如果(现在>=end1){
清除超时(间隔);
//setItem(“end”,null);
localStorage.removietem(“end1”);
localStorage.clear();
document.getElementById('divCounter')。innerHTML=finishedtext;
如果(确认(“超时!”)
window.location.href=“timeup.php”;
}否则{
var值=分钟+“:”+秒;
setItem(“end1”,end1);
document.getElementById('divCounter')。innerHTML=value;
}
}
var间隔=设置间隔(计数器,1000);
如何将这些值存储在内存中,并在刷新页面时加载它们。请给我解释一下,或者给我学习的链接there@SMadhu我上传了一个新的答案-你可以从那里复制代码谢谢,它正在工作,但当我想再试一次,而不是时间,我会得到“NaN:NaN”。如何重置计时器?使用此-localStorage.setItem(“end”,null)