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PODifference between times in JavaScript
 

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    <p>I found the following code which is working well for a time sheet calculator I am using</p> <pre><code>function convertSecondsToHHMMSS(intSecondsToConvert) { var hours = convertHours(intSecondsToConvert); var minutes = getRemainingMinutes(intSecondsToConvert); minutes = (minutes == 60) ? "00" : minutes; var seconds = getRemainingSeconds(intSecondsToConvert); return hours+" hrs "+minutes+" mins"; } function convertHours(intSeconds) { var minutes = convertMinutes(intSeconds); var hours = Math.floor(minutes/60); return hours; } function convertMinutes(intSeconds) { return Math.floor(intSeconds/60); } function getRemainingSeconds(intTotalSeconds) { return (intTotalSeconds%60); } function getRemainingMinutes(intSeconds) { var intTotalMinutes = convertMinutes(intSeconds); return (intTotalMinutes%60); } function HMStoSec1(T) { var A = T.split(/\D+/) ; return (A[0]*60 + +A[1])*60 + +A[2] } var time1 = HMStoSec1("10:00:00"); var time2 = HMStoSec1("12:05:00"); var diff = time2 - time1; document.write(convertSecondsToHHMMSS(diff)); </code></pre> <p>It works fine when time1 is greater than time2, if time1 is less than time2 an extra hour is subtracted eg. </p> <pre><code>var time1 = HMStoSec1("09:00:00"); var time2 = HMStoSec1("08:55:00"); var diff = time2 - time1; document.write(convertSecondsToHHMMSS(diff)); // writes "1 hr 5 mins" instead of "0 hr 5 mins" </code></pre> <p>I think its something to do with the Math.floor in the convertHours function.</p> <p>I am trying to build something that can just take hours and minutes and subtract/add time, not actually times just quantities of hours and minutes.</p> <p>There must be a simpler way that sadly eludes me, any help would be greatly appreciated.</p>
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