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JS: Convert Milliseconds to days? minutes? seconds? or all!
function convertMiliseconds(miliseconds, format) {
var days, hours, minutes, seconds, total_hours, total_minutes, total_seconds;
total_seconds = parseInt(Math.floor(miliseconds / 1000));
total_minutes = parseInt(Math.floor(total_seconds / 60));
total_hours = parseInt(Math.floor(total_minutes / 60));
days = parseInt(Math.floor(total_hours / 24));
seconds = parseInt(total_seconds % 60);
minutes = parseInt(total_minutes % 60);
hours = parseInt(total_hours % 24);
switch(format) {
case 's':
return total_seconds;
case 'm':
return total_minutes;
case 'h':
return total_hours;
case 'd':
return days;
return { d: days, h: hours, m: minutes, s: seconds };
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Dias999 commented Jan 10, 2019

This is awesome! Thank you!

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Thx dude, just one thing, breaking after a return isn't useful. the break is unreachable.

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Thanks! Missed that ;)

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wkok commented Jun 2, 2020

Thank you, wish I found your solution earlier, would've saved me 2 days.

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Thanks this works great!

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joaovct commented Sep 18, 2020

Thanks 👏🏽!

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Thanks! This is awesome!

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petrone7 commented Dec 1, 2020

Thank you very much! works like a charm!

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godfern commented Dec 9, 2020

Looks like the days giving a wrong value. The calculation for a day is giving an extra day.

Eg: if the difference between 2 dates i.e. from date: 02/12/2020 and to date: 09/12/2020 gives 8 days instead 7 days

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thx bro

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haydanu commented Apr 19, 2021


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thx! Very helpful!

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DET171 commented Oct 20, 2021


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You are a STAR!

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Beautiful! Thanks

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medamin25 commented Aug 30, 2022

simple real time calculator for this

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nforne commented Feb 8, 2023

Good job!
Principle : "Fail fast and early if you have to and recover soonest"
So I'll suggest you return zero on the third line if the milliseconds argument is zero, or any out of order input.
Some sort of error handling I suppose.
It saves on infrastructure cost and improves app performance when the other lines of code don't have to pointlessly run .
Like so .......

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Thanks a lot!

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Thanks a bunch!

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