For example if you receive a timestamp in Javascript:
1291656749000
How would you create a function to convert the timestamp into UTC like:
2010/12/6 05:32:30pm
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2 Answers
(new Date(1291656749000)).toUTCString()
Is this what you're looking for?
4 Comments
Louis Ameline
Note that the parameter sent to Date() must be in milliseconds.
spyder
how to do just the opposite of this? i.e. convert UTC string to timestamp?
ass-king some questions
How about convert the timestamp into GMT
I would go with (new Date(integer)).toUTCString(),
but if you have to have the 'pm', you can format it yourself:
function utcformat(d){
d= new Date(d);
var tail= 'GMT', D= [d.getUTCFullYear(), d.getUTCMonth()+1, d.getUTCDate()],
T= [d.getUTCHours(), d.getUTCMinutes(), d.getUTCSeconds()];
if(+T[0]> 12){
T[0]-= 12;
tail= ' pm '+tail;
}
else tail= ' am '+tail;
var i= 3;
while(i){
--i;
if(D[i]<10) D[i]= '0'+D[i];
if(T[i]<10) T[i]= '0'+T[i];
}
return D.join('/')+' '+T.join(':')+ tail;
}
alert(utcformat(1291656749000))
/* returned value: (String) 2010/12/06 05:32:29 pm GMT */
