Datetime in isoformat in Javascript

Question

In Python I have this code:

now =  datetime.now().isoformat()
if "." not in now:
  now = now + ".000000"

Can I achieve the same result in Javascript?

The resulting datetime should match this mask %Y-%m-%dT%H:%M:%S.%f because the datetime will be saved into the database and then I need to retrieve it from Python code with exactly this mask.

It would have helped if you had shown us the expected result... Yet, you might be interested in: blog.stevenlevithan.com/archives/date-time-format — JMax
– JMax, Commented Jun 25, 2012 at 10:55
I'm curious as to why you have the if "." not in now check? Is there some scenario where the iso format doesn't return .? — Burhan Khalid
– Burhan Khalid, Commented Jun 25, 2012 at 11:01
@BurhanKhalid Good point. There was such a case before, but it was not retrieved from datetime.now() and the .something part was missing often. Maybe I could omit it now (I'm not sure). — xralf
– xralf, Commented Jun 25, 2012 at 11:06
possible duplicate of How do I output an ISO-8601 formatted string in Javascript? — Sarfraz
– Sarfraz, Commented Jun 25, 2012 at 15:00

Alnitak · Accepted Answer · 2012-06-25 11:55:27Z

3

Did you look at Date.toISOString() - the standard function for generating ISO 8601 dates?

Here's a Chrome console test:

> (new Date()).toISOString()
"2012-06-25T10:55:19.833Z"

Note that the link above includes a shim which adds support for this function to browsers that don't already have it.

edited Jun 25, 2012 at 11:55

answered Jun 25, 2012 at 10:54

Alnitak

341k72 gold badges420 silver badges503 bronze badges

Sign up to request clarification or add additional context in comments.

5 Comments

Alnitak Over a year ago

@InternalServerError if you look at the link I included the MDN site includes a shim for older browsers.

xralf Over a year ago

Thanks for answer, actually I use it in Firefox extension, so the other solution suits better to my need.

Alnitak Over a year ago

@xralf you should use the standard function, and shim it when not available.

xralf Over a year ago

@Alnitak But I don't have the Z letter in the end. Python omits the Z letter.

Alnitak Over a year ago

so just do .substring(-1) on it then - the Z suffix is part of ISO 8601 format.

Vivek S · Accepted Answer · 2012-06-25 11:24:17Z

1

Last example on page: https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference:Global_Objects:Date

/* use a function for the exact format desired... */
function ISODateString(d){
 function pad(n){return n<10 ? '0'+n : n}
 return d.getUTCFullYear()+'-'
  + pad(d.getUTCMonth()+1)+'-'
  + pad(d.getUTCDate())+'T'
  + pad(d.getUTCHours())+':'
  + pad(d.getUTCMinutes())+':'
  + pad(d.getUTCSeconds())+'Z'}

var d = new Date();
console.log(ISODateString(d)); // prints something like 2009-09-28T19:03:12Z

answered Jun 25, 2012 at 11:24

Vivek S

5,5708 gold badges57 silver badges74 bronze badges

3 Comments

Vivek S Over a year ago

And if you prefer jquery...there u go plugins.jquery.com/project/jquery-dateFormat

xralf Over a year ago

Looks good, I removed only the Z letter and can I get microseconds too? In my mask it's .%f part.

xralf Over a year ago

Or I will concatenate it with .000000 string, to have a correct format.

Collectives™ on Stack Overflow

Datetime in isoformat in Javascript

2 Answers 2

5 Comments

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

5 Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related