javascript - How to create a timestamp from date and time - Stack Overflow

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i have a datepicker and some time slots in my view. the time slots are checkboxes and the value of checkbox should be a timestamp which i aim to get by bining the value from datepicker and the checkbox slot that was checked by the user. Is there any way to do this using javascript of jquery.

Example:

$('#inline_datepicker').datepicker("getDate") + "02:30PM" => create timestamp

i have a datepicker and some time slots in my view. the time slots are checkboxes and the value of checkbox should be a timestamp which i aim to get by bining the value from datepicker and the checkbox slot that was checked by the user. Is there any way to do this using javascript of jquery.

Example:

$('#inline_datepicker').datepicker("getDate") + "02:30PM" => create timestamp

• javascript
• jquery
• datetime
• timestamp
• jquery-ui-datepicker

Share Improve this question Follow edited Jan 22, 2014 at 6:55 Salman Arshad 273k8484 gold badges444444 silver badges534534 bronze badges asked Jan 22, 2014 at 4:55 Furqan AsgharFurqan Asghar 3,87044 gold badges2525 silver badges2727 bronze badges 2

• what do you need the timestamp for and in what format? – Foreever Commented Jan 22, 2014 at 5:04
• possible duplicate of How do you get a timestamp in JavaScript? – Foreever Commented Jan 22, 2014 at 5:10

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2 Answers 2

Sorted by: Reset to default 4

I'm not clear on exactly what you're looking for here, but to just get a basic timestamp in string format using milliseconds (from Jan. 1, 1970 at midnight, as is the standard) you can just do this using vanilla javascript:

var timestamp = new Date(2014,1,3,18).getTime();

The format is yyyy/mm/dd/hh and it is zero based and the hours use a 24 hour clock, also called military time if you are from the United States. The above example gives the timestamp for February 4, 2014 at 6pm.

You can then always add time to the time stamp by adding time to that value, too. 1 day is 24 hours, one hour is 60 minutes, one minute is 60 seconds, and one second is 1000 milliseconds. That means after creating a timestamp, if you wanted to add 4 days, 13 hours, 49 minutes, and 6 seconds, you could do this:

var timestamp = new Date(2014,1,3,18).getTime();
timestamp += (((4*24+13)*60+49)*60+6)*1000;

Finally, you can always convert back to a human-readable timestamp using the .toUTCString() method in conjunction with creating a new Date object. The final code would read as such:

var timestamp= new Date(2014,1,3,18).getTime();
console.log(new Date(timestamp).toUTCString());
/* Outputs "Sun, 04 Feb 2014 18:00:00 GMT" */

timestamp += (((4*24+13)*60+49)*60+6)*1000;
console.log(new Date(timestamp).toUTCString());
/* Outputs "Sun, 09 Feb 2014 07:49:06 GMT" */

Try

var date = $('#inline_datepicker').datepicker("getDate");
//24 hour clock
date.setHours(14, 30);
console.log(date)

Demo: Fiddle

To get the time in milliseconds use date.getTime()

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