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How can I convert seconds to HH:mm:ss
?
At the moment I am using the function below
render: function (data){
return new Date(data*1000).toTimeString().replace(/.*(\d{2}:\d{2}:\d{2}).*/, "$1");;
}
This works on chrome but in firefox for 12 seconds I get 01:00:12
I would like to use moment.js for cross browser compatibility
I tried this but does not work
render: function (data){
return moment(data).format('HH:mm:ss');
}
What am I doing wrong?
EDIT
I managed to find a solution without moment.js which is as follow
return (new Date(data * 1000)).toUTCString().match(/(\d\d:\d\d:\d\d)/)[0];
Still curious on how I can do it in moment.js
How can I convert seconds to HH:mm:ss
?
At the moment I am using the function below
render: function (data){
return new Date(data*1000).toTimeString().replace(/.*(\d{2}:\d{2}:\d{2}).*/, "$1");;
}
This works on chrome but in firefox for 12 seconds I get 01:00:12
I would like to use moment.js for cross browser compatibility
I tried this but does not work
render: function (data){
return moment(data).format('HH:mm:ss');
}
What am I doing wrong?
EDIT
I managed to find a solution without moment.js which is as follow
return (new Date(data * 1000)).toUTCString().match(/(\d\d:\d\d:\d\d)/)[0];
Still curious on how I can do it in moment.js
Share Improve this question edited Jul 10, 2015 at 9:49 QGA asked Jul 10, 2015 at 9:33 QGAQGA 3,1927 gold badges42 silver badges63 bronze badges 12- stackoverflow.com/questions/6312993/… – mplungjan Commented Jul 10, 2015 at 9:38
- @mplungjan Sorry for not having mentioned that I have already read that post. I need to render a table with millions of row and the solution there is too slow. the second answer is exactly what I have written in my question but gives me problems in firefox – QGA Commented Jul 10, 2015 at 9:40
- 2 @QuentinTanioartino so 4 trivial math operators is a problem for the task of mutating DOM for millions of elements? Are you sure you understand the performance problem correctly? – zerkms Commented Jul 10, 2015 at 9:49
- @zerkms well I know that my DAO classes have to be rewritten to serve the data already converted. This is an issue I am aware off. Said that I am quite happy with the current performances of my first attempt but when I have 5 math operations for a conversion that slows the system a bit. Yes I agree with you that this is just a quick TEMPORARY solution – QGA Commented Jul 10, 2015 at 9:53
- @QuentinTanioartino "that slows the system a bit" --- "a bit" is not how you reason about performance. Is it a bottleneck? Is it proven to be a bottleneck? If not - what drives you to optimize this very operation? – zerkms Commented Jul 10, 2015 at 9:58
12 Answers
Reset to default 158This is similar to the answer mplungjan referenced from another post, but more concise:
const secs = 456;
const formatted = moment.utc(secs*1000).format('HH:mm:ss');
document.write(formatted);
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.1/moment.min.js"></script>
It suffers from the same caveats, e.g. if seconds exceed one day (86400), you'll not get what you expect.
From this post I would try this to avoid leap issues
moment("2015-01-01").startOf('day')
.seconds(s)
.format('H:mm:ss');
I did not run jsPerf, but I would think this is faster than creating new date objects a million times
function pad(num) {
return ("0"+num).slice(-2);
}
function hhmmss(secs) {
var minutes = Math.floor(secs / 60);
secs = secs%60;
var hours = Math.floor(minutes/60)
minutes = minutes%60;
return `${pad(hours)}:${pad(minutes)}:${pad(secs)}`;
// return pad(hours)+":"+pad(minutes)+":"+pad(secs); for old browsers
}
function pad(num) {
return ("0"+num).slice(-2);
}
function hhmmss(secs) {
var minutes = Math.floor(secs / 60);
secs = secs%60;
var hours = Math.floor(minutes/60)
minutes = minutes%60;
return `${pad(hours)}:${pad(minutes)}:${pad(secs)}`;
// return pad(hours)+":"+pad(minutes)+":"+pad(secs); for old browsers
}
for (var i=60;i<=60*60*5;i++) {
document.write(hhmmss(i)+'<br/>');
}
/*
function show(s) {
var d = new Date();
var d1 = new Date(d.getTime()+s*1000);
var hms = hhmmss(s);
return (s+"s = "+ hms + " - "+ Math.floor((d1-d)/1000)+"\n"+d.toString().split("GMT")[0]+"\n"+d1.toString().split("GMT")[0]);
}
*/
You can use moment-duration-format plugin:
var seconds = 3820;
var duration = moment.duration(seconds, 'seconds');
var formatted = duration.format("hh:mm:ss");
console.log(formatted); // 01:03:40
<!-- Moment.js library -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.1/moment.min.js"></script>
<!-- moment-duration-format plugin -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment-duration-format/1.3.0/moment-duration-format.min.js"></script>
See also this Fiddle
Upd: To avoid trimming for values less than 60-sec use { trim: false }
:
var formatted = duration.format("hh:mm:ss", { trim: false }); // "00:00:05"
var seconds = 2000 ; // or "2000"
seconds = parseInt(seconds) //because moment js dont know to handle number in string format
var format = Math.floor(moment.duration(seconds,'seconds').asHours()) + ':' + moment.duration(seconds,'seconds').minutes() + ':' + moment.duration(seconds,'seconds').seconds();
My solution for changing seconds (number) to string format (for example: 'mm:ss'):
const formattedSeconds = moment().startOf('day').seconds(S).format('mm:ss');
Write your seconds instead 'S' in example. And just use the 'formattedSeconds' where you need.
The above examples may work for someone but none did for me, so I figure out a much simpler approach
var formatted = moment.utc(seconds*1000).format("mm:ss");
console.log(formatted);
In a better way to utiliza moments.js; you can convert the number of seconds to human-readable words like ( a few seconds, 2 minutes, an hour).
Example below should convert 30 seconds to "a few seconds"
moment.duration({"seconds": 30}).humanize()
Other useful features: "minutes", "hours"
Until 24 hrs.
As Duration.format
is deprecated, with [email protected]
const seconds = 123;
moment.utc(moment.duration(seconds,'seconds').as('milliseconds')).format('HH:mm:ss');
How to correctly use moment.js durations? | Use moment.duration() in codes
First, you need to import moment
and moment-duration-format
.
import moment from 'moment';
import 'moment-duration-format';
Then, use duration function. Let us apply the above example: 28800 = 8 am.
moment.duration(28800, "seconds").format("h:mm a");
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