计算两个日期之间的百分比

Question

我想计算两个日期之间的差异百分比。 只是没有日期，需要扩展的时间。 例子：

22-08-2017 09:00 start date,
30.09.2017 22:00 finish date,

今天的日期是01.09.2017 。 当我今天查看系统时，应用程序向我显示“%47 percent completed”我想要这个。

Answer 1

 function getpercent(){ var strt = new Date(document.getElementById('start').value).getTime(); var end = new Date(document.getElementById('end').value).getTime(); var current = new Date(document.getElementById('current').value).getTime(); var completed = ((current - strt) / (end - strt)) * 100; document.getElementById('percent').innerHTML = completed+"%"; }

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <p>start <input id="start" type="date" /></p> <p>end <input id="end" type="date" /></p> <p>current <input id="current" type="date" /></p> <p>percent <span id="percent"></span></p> <button onclick="getpercent()">get percent</button>

new Date() 将采用日期字符串并将其转换为 unix 标准时间（以秒为单位）。

Answer 2

javascript Date 对象可用于算术表达式。 它将转换为毫秒。

var start, finish, midpoint, percent, elapsed;

start = new Date(2017, 8, 22, 9);
finish = new Date(2017, 9, 30, 22);
midpoint = new Date(2017, 8, 29, 12);

elapsed = midpoint - start;
percent = (elapsed / (finish - start)) * 100;

console.log('elapsed', elapsed, ' ms', percent, ' % complete');

https://jsfiddle.net/fwb3g4nc/1/

Answer 3

这是一个简单的DiffTracker类，它在构造函数中接受两个日期 - start日期和end日期，并且有一个方法getPercentage()将返回从开始日期开始的小时数与start日期和end日期之间的总小时数的百分比。

让我们看看以下场景：

开始日期 = 2017-08-23 09:00

结束日期 = 2017-08-24 09:00

所以现在总时差是24

如果我们调用日期为 2017-08-24 21:00 的getPercentage() ，我们应该会看到50%的结果。 如果我们调用日期为 2017-08-24 03:00 的getPercentage() ，我们应该看到75%的结果，因为相差 18 小时

 var diffTraker = new DiffTracker(new Date(2017, 7, 23, 9), new Date(2017, 7, 24, 9)); console.log('Start Date'); console.log(new Date(2017, 7, 23, 9)); console.log('-------------------'); console.log('End Date'); console.log(new Date(2017, 7, 24, 9)); console.log('-------------------'); console.log(diffTraker.getPercentage(new Date(2017, 7, 23, 21)) + '% from start date (' + new Date(2017, 7, 23, 21) + ')'); console.log(diffTraker.getPercentage(new Date(2017, 7, 24, 3)) + '% from start date (' + new Date(2017, 7, 24, 3) + ')'); console.log(diffTraker.getPercentage(new Date(2017, 7, 24, 5)) + '% from start date (' + new Date(2017, 7, 24, 5) + ')'); function DiffTracker(startDate, endDate){ var self = this; self.start = startDate; self.end = endDate; self.totalHours = getDiffHours(self.start, self.end); self.getPercentage = function(date){ var hoursFromStart = getDiffHours(self.start, date); return (hoursFromStart * 100 / self.totalHours).toFixed(2); } function getDiffHours(start, end){ /* 36e5 is the scientific notation for 60*60*1000, dividing by which converts the milliseconds difference into hours */ return Math.abs(start - end) / 36e5; } }

Answer 4

在 php 中我使用这个方法：

<?php
$FirstDate = "22-08-2017 09:00";
$SecondDate = "30.09.2017 22:00";

$start = strtotime($FirstDate);
$finish = strtotime($SecondDate);

$diff = $finish - $start;

$progress = time() - $start; // You might have to modify the time function depending on where you live
$procent = ($progress / $diff) * 100;

$width = round($procent);

// The if statment below just makes sure that it does not show 110% for example.
if ($width >= 100)
{
    echo "100 %";
}
else
{
    echo $width;
}

希望这可以帮助！

Answer 5

$FirstDate = " 22 -08-2017 09:00"; $SecondDate = " 23 .09.2017 22:00";

哪怕有一天显示100%