calculates the end date of a task

Date calculateEndDate(object|Date config, [number duration] );
configobject|Dateeither the configuration object of a time span or the start date of the task
durationnumberoptional, the duration of the task. The parameter is required when the first parameter is specified as start_date
Datethe date when a task is scheduled to be completed


gantt.config.work_time = true;
// calculate the end date using global worktime settings
gantt.calculateEndDate({start_date: new Date(2013,02,15), duration: 48});
// or
gantt.calculateEndDate(new Date(2013,02,15), 48);
// calculate end date for a specific task calendar
gantt.calculateEndDate({start_date: new Date(2013,02,15), duration: 48, task:task});
// or, a short form:
// will use calendar currently assigned to a task, task.start_date and task.duration


If the work_time option is enabled, the method considers duration as working time.

You can also calculate the start date by using the calculateEndDate method:

//calculate the start date:
task.start_date = gantt.calculateEndDate({
    start_date: task.end_date,
    duration: -task.duration

Configuration object properties

The configuration object can contain the following properties:

  • start_date - (Date) the date when a task is scheduled to begin
  • duration - (number) the duration of a task
  • unit - (string) optional, the time unit of the duration: "minute", "hour", "day", "week", "month", "year"
  • task - (object) optional, the object of the task the duration of which should be calculated
See also
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