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A time difference function in javascript, logical to humans. Outputs the difference of two dates in years, months, days, hours, minutes and seconds.
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| // Time difference function | |
| function timeDiff(start, end) { | |
| //today, now! | |
| //Get the diff | |
| var diff = end - start; | |
| //Create numbers for dividing to get hour, minute and second diff | |
| var units = [ | |
| 1000 * 60 * 60 *24, | |
| 1000 * 60 * 60, | |
| 1000 * 60, | |
| 1000 | |
| ]; | |
| var rv = []; // h, m, s array | |
| //loop through d, h, m, s. we are not gonna use days, its just there to subtract it from the time | |
| for (var i = 0; i < units.length; ++i) { | |
| rv.push(Math.floor(diff / units[i])); | |
| diff = diff % units[i]; | |
| } | |
| //Get the year of this year | |
| var thisFullYear = end.getFullYear(); | |
| //Check how many days there where in last month | |
| var daysInLastMonth = new Date(thisFullYear, end.getMonth(), 0).getDate(); | |
| //Get this month | |
| var thisMonth = end.getMonth(); | |
| //Subtract to get differense between years | |
| thisFullYear = thisFullYear - start.getFullYear(); | |
| //Subtract to get differense between months | |
| thisMonth = thisMonth - start.getMonth(); | |
| //If month is less than 0 it means that we are some moths before the start date in the year. | |
| // So we subtract one year, and add the negative number (month) to 12. (12 + -1 = 11) | |
| subAddDays = daysInLastMonth - start.getDate(); | |
| thisDay = end.getDate(); | |
| thisMonth = thisMonth - 1; | |
| if(thisMonth < 0){ | |
| thisFullYear = thisFullYear - 1; | |
| thisMonth = 12 + thisMonth; | |
| //Get ends day of the month | |
| } | |
| //Subtract the start date from the number of days in the last month, and add the result to todays day of the month | |
| subAddDays = daysInLastMonth - start.getDate(); | |
| subAddDays = thisDay + subAddDays; | |
| if(subAddDays >= daysInLastMonth){ | |
| subAddDays = subAddDays - daysInLastMonth; | |
| thisMonth++; | |
| if (thisMonth > 11){ | |
| thisFullYear++; | |
| thisMonth = 0; | |
| } | |
| } | |
| return { | |
| years: thisFullYear, | |
| months: thisMonth, | |
| days: subAddDays, | |
| hours: rv[1], | |
| minutes: rv[2], | |
| seconds: rv[3] | |
| }; | |
| } | |
| // The start date/From date. Here I add one hour to offset it. | |
| // var start = new Date(1814, 3, 20, 1); | |
| // The end date. today, now! | |
| // var end = new Date(); | |
| // Get the difference | |
| // var d = timeDiff(start, end); | |
| // When perfect timing makes all the difference | |
| // console.log('years: '+ d.years + '. months: '+ d.months + '. days: ' + d.days + '. hours:' +d.hours+ '. minutes:' + d.minutes + '. seconds: ' + d.seconds); |
This is awesome; thank you for the code and work. Line 69 made me LOL.
This is awesome; thank you for the code and work. Line 69 made me LOL.
Ty! Haha, this is an old one. Updated the line to something more subtle
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Fixed a bug