Docly Developers
Function Updated 19 Oct 2026

addSeconds(datetime, seconds)

Adding a number of seconds (positive or negative value) to a specified date and time.

See also Compare date field with todays date Get todays date SetCulture date and number format

Parameters

datetimedatetimerequired

Date and time on which to add seconds to.

secondsnumberrequired

How many seconds to add to specified datetime.

Returns

A modified date, does not modify input date.

Example

Mixed HTML (or any text file) with inline JavaScript between hash signs.
#{
    var before = new Date(); // Create new date and time object
    var after = docly.addSeconds(before, 33); // Add seconds
}#
<b>Before:</b> #format(before, "HH:mm:ss")#
<b>After:</b> #format(after, "HH:mm:ss")#