我正在开发一个应用程序,以帮助人们养成新习惯或摒弃旧习惯。对于此应用程序,我想有一个每天倒数的倒数计时器,这要感谢this post使它能够正常工作,下一步是添加一个进度条,它与计时器一起倒数(所以基本上是00:00 =进度条已满,23:59 =空进度条)。
我到处都在寻找,但似乎无法弄清楚,甚至无法开始。我希望看到#goal-time
下降。
我希望有人可以给我一些指导/提示,甚至一些摘录!谢谢!
(function() {
var start = new Date;
start.setHours(24, 0, 0); //hh:mm:ss
function pad(num) {
return ("0" + parseInt(num)).substr(-2);
}
function tick() {
var now = new Date;
if (now > start) { // too late, go to tomorrow
start.setDate(start.getDate() + 1);
}
var remain = ((start - now) / 1000);
var hh = pad((remain / 60 / 60) % 60);
var mm = pad((remain / 60) % 60);
var ss = pad(remain % 60);
document.getElementById('time').innerHTML = hh + ":" + mm + ":" + ss;
setTimeout(tick, 1000);
}
document.addEventListener('DOMContentLoaded', tick);
})();
.goal-progress {
border-color: black;
border-style: solid;
border-width: thick;
height: 80px;
margin-top: 50px;
margin-left: 20px;
margin-right: 20px;
background-color: black;
}
#time {
float: right;
line-height: 80px;
margin-right: 20px;
background-color: black;
color: white;
mix-blend-mode: difference;
}
.goal-time-container {
height: 80px;
background-color: white;
margin-left: 115px;
}
#goal-time {
background-color: black;
height: 80px;
width: 100%;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="goal-progress">
<div id="time"></div>
<!-- time countdown -->
<div id="img"></div>
<div class="goal-time-container">
<!-- container of the progress bar -->
<div id="goal-time"></div>
<!-- soon to (hopefully) be progress bar -->
</div>
</div>
[要实现这一点,您可以使用remain
变量中保留的秒数,并使用它们来计算一天中剩余秒数的百分比86400
,然后将该百分比设置为进度条的宽度:
(function() {
var start = new Date;
start.setHours(24, 0, 0); //hh:mm:ss
function pad(num) {
return ("0" + parseInt(num)).substr(-2);
}
function tick() {
var now = new Date;
if (now > start) { // too late, go to tomorrow
start.setDate(start.getDate() + 1);
}
var remain = ((start - now) / 1000);
var hh = pad((remain / 60 / 60) % 60);
var mm = pad((remain / 60) % 60);
var ss = pad(remain % 60);
document.getElementById('time').innerHTML = hh + ":" + mm + ":" + ss;
// bar width calulation:
var pc = remain * (100 / 86400);
document.querySelector('#goal-time').style.width = pc + '%';
setTimeout(tick, 1000);
}
document.addEventListener('DOMContentLoaded', tick);
})();
.goal-progress {
border: 5px solid #000;
height: 80px;
margin: 50px 20px 20px 0;
background-color: black;
}
#time {
float: right;
line-height: 80px;
margin-right: 20px;
background-color: black;
color: white;
mix-blend-mode: difference;
}
.goal-time-container {
height: 80px;
background-color: white;
margin-left: 115px;
}
#goal-time {
background-color: black;
height: 80px;
width: 100%;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="goal-progress">
<div id="time"></div>
<div id="img"></div>
<div class="goal-time-container">
<div id="goal-time"></div>
</div>
</div>
您可以使用getTime()函数来获取两个日期的黑白差的毫秒数。
例如
let diff = new Date("<future_date>").getTime() - new Date().getTime();
您可以使用diff值设置进度条样式(宽度或百分比或其他)。
另一个解决方案是添加:
const totalSeconds = 24 * 60 * 60;
之后:
start.setHours(24,0,0)
然后添加:
document.getElementById('goal-time').style.width = ((remain / totalSeconds) * 100) + '%';
紧随其后:
document.getElementById('time').innerHTML = hh + ":" + mm + ":" + ss;
计算进度条的宽度。