allows including only working days in task duration
webix.ui({
view: "gantt",
url: "https://docs.webix.com/gantt-backend/",
// exclude holidays from task duration
excludeHolidays: true
});
By default holidays and weekend days are included into task duration.
If you set excludeHolidays to true, tasks cannot fall on a holiday and will stretch up to the next working day in the chart. For example, if task starts on Friday and lasts 2 days it will stretch to Monday.
You can define any day to be a holiday via the isHoliday property.