刷新时重新载入倒数计时器 [英] countdown timer reloading again on refreshing
本文介绍了刷新时重新载入倒数计时器的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
javascript中的倒数计时器代码.但是刷新页面时它会重新启动.我希望计时器即使重新启动也应该继续.
countdown timer code in javascript. But it is restarting again when the page is refreshed. I want the timer should continue even though it is restarted.
作为我的初学者，请帮助我处理此问题.这是我的第一个应用程序，需要您提供一些详细的信息.
Help me to deal with this problem as i am beginner this is my first application i need some detail inputs from you.
`
<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>
`
推荐答案
倒数计时器可用于您想要的任何时间.刷新页面时，它不会重新启动.
countdown timer for whatever time you want. It does not restart when you refresh the page.
<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>
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