| Promise | Promise object constructor |
| addCalendar | adds a calendar into Gantt |
| addLink | adds a new dependency link |
| addLinkLayer | displays an additional layer with custom elements for a link in the timeline area |
| addMarker | adds a marker to the timeline area |
| addShortcut | adds a new keyboard shortcut |
| addTask | adds a new task |
| addTaskLayer | displays an additional layer with custom elements for a task in the timeline area |
| alert | calls an alert message box |
| assert | if the specified expression is false, an errorMessage is shown in the red popup at the top right corner of the screen |
| attachEvent | attaches the handler to an inner event of dhtmlxGantt |
| autoSchedule | recalculates the schedule of the project |
| batchUpdate | updates multiple tasks/links at once |
| bind | creates a new function that, when called, has its this keyword set to the provided value |
| calculateDuration | calculates the duration of a task |
| calculateEndDate | calculates the end date of a task |
| calculateTaskLevel | calculates the level of nesting of a task |
| callEvent | calls an inner event |
| changeLightboxType | repaints the lighbox for the task according to its type |
| changeLinkId | changes the link's id |
| changeTaskId | changes the task's id |
| checkEvent | checks whether an event has some handler(s) specified |
| clearAll | removes all tasks and additional elements (including markers) from the Gantt chart |
| clearRedoStack | clears the stack of stored redo commands |
| clearUndoStack | clears the stack of stored undo commands |
| close | closes the branch with the specified id |
| collapse | collapses gantt from the full screen mode to the normal mode |
| columnIndexByDate | returns the index of the column by the date |
| confirm | calls a confirm message box |
| copy | creates a deep copy of provided object |
| correctTaskWorkTime | recalculates the task duration in the work time |
| createCalendar | creates a working calendar |
| createDataProcessor | creates a new dataProcessor instance and attaches it to gantt |
| createDatastore | creates a datastore according to the provided configuration |
| createTask | adds a new task and opens the lightbox to confirm |
| dataProcessor | dataProcessor constructor |
| dateFromPos | gets the date of the specified horizontal position in the chart area |
| defined | returns false if the provided argument is undefined, otherwise true |
| deleteCalendar | deletes a task calendar by its id |
| deleteLink | deletes the specified dependency link |
| deleteMarker | deletes the specified marker |
| deleteTask | deletes the specified task |
| destructor | destroys the gantt instance |
| detachAllEvents | detaches all events from dhtmlxGantt (both custom and inner ones) |
| detachEvent | detaches a handler from an event (which was attached before by the attachEvent() method) |
| eachParent | iterates over all parent tasks of the specified task in the Gantt chart |
| eachSelectedTask | iterates over all selected tasks in the Gantt chart |
| eachTask | iterates over all child tasks of a specific task or the of whole Gantt chart |
| event | attaches an event handler to an HTML element |
| eventRemove | removes an event handler from an HTML element |
| expand | expands gantt to the full screen mode |
| exportToExcel | exports data from the Gantt chart to an Excel document |
| exportToICal | exports data from the Gantt chart to an iCal string |
| exportToJSON | exports the structure and data of a Gantt chart into a JSON object |
| exportToMSProject | exports data from the Gantt chart to MS Project |
| exportToPDF | exports a Gantt chart into the PDF format |
| exportToPNG | exports a Gantt chart into the PNG format |
| exportToPrimaveraP6 | exports data from the Gantt chart to Primavera P6 |
| findCycles | returns all dependency loops in the chart |
| focus | sets focus on the gantt |
| getCalendar | gets worktime calendar by id |
| getCalendars | gets all the calendars added into Gantt |
| getChildren | returns the 1st-level child tasks of the specified parent branch |
| getClosestWorkTime | returns the closest working time |
| getColumnIndex | returns the index of the column by its name |
| getConnectedGroup | returns all tasks and links that a task is connected with |
| getConstraintLimitations | returns the earliest and latest dates allowed by the constraint applied to a task |
| getConstraintType | returns the constraint type applied to the task |
| getDatastore | returns the configuration object of a datastore |
| getFreeSlack | returns the free slack of a task |
| getGlobalTaskIndex | gets the index of a task in the tree |
| getGridColumn | gets the configuration object of a column |
| getGridColumns | gets columns of the Gantt chart |
| getLabel | gets the label of a select control in the lightbox |
| getLastSelectedTask | returns the id of the last selected task |
| getLayoutView | returns the object of the layout view by its name |
| getLightbox | gets the lightbox's HTML object element |
| getLightboxSection | returns the object of the lightbox's section |
| getLightboxType | returns the name of the active lighbox's structure |
| getLightboxValues | returns values of the lightbox's sections |
| getLink | returns the dependency link object by the specified id |
| getLinkCount | returns the number of all dependency links presented in the Gantt chart |
| getLinkNode | returns the HTML element of the specified dependency link |
| getLinks | returns all links presented in the Gantt chart |
| getMarker | gets the marker's object |
| getNext | returns the id of the next item (no matter what the level of nesting is: the same or different) |
| getNextSibling | returns the id of the next task of the same level |
| getParent | returns the id of the parent task |
| getPrev | returns the id of the previous item (no matter what the level of nesting is: the same or different) |
| getPrevSibling | returns the id of the previous task of the same level |
| getRedoStack | returns the stack of stored redo user actions |
| getResourceAssignments | returns all tasks assigned to the resource |
| getResourceCalendar | returns a calendar which the resource is assigned to |
| getScale | returns the configuration of the time scale |
| getScrollState | returns the scroll position |
| getSelectedId | returns the id of the selected task |
| getSelectedTasks | returns an array of the currently selected tasks |
| getShortcutHandler | gets a key navigation shortcut handler |
| getSiblings | returns siblings of the specified task (including itself) |
| getSlack | checks how much time (in the current duration unit) a task has before it starts to affect other tasks |
| getState | gets the current state of the Gantt chart |
| getSubtaskDates | calculates the combined start/end dates of tasks nested in a project or another task |
| getSubtaskDuration | calculates the combined duration of tasks nested in a project or another task. |
| getTask | returns the task object |
| getTaskAssignments | returns the parsed resource assignments of a specific task from the datastore |
| getTaskBarHeight | returns the height (in pixels) of the DOM element of the task |
| getTaskBy | finds a task by the specified criteria |
| getTaskByIndex | returns a task by its global task index |
| getTaskByTime | returns a collection of tasks which occur during the specified period |
| getTaskByWBSCode | returns a task by its WBS code |
| getTaskCalendar | gets a calendar assigned to the specified task (a task level calendar) |
| getTaskCount | gets the number of tasks that are currently loaded in the gantt |
| getTaskHeight | returns the visible height of a task |
| getTaskIndex | gets the index of a task in the branch |
| getTaskNode | returns the HTML element of the task bar |
| getTaskPosition | calculates the position and size of the task's DOM element in the timeline area |
| getTaskRowNode | returns the HTML element of the task row in the table |
| getTaskTop | gets the top position of the task's DOM element in the timeline area |
| getTaskType | returns the type of a task |
| getTotalSlack | returns the total slack of a task |
| getUndoStack | returns the stack of stored undo user actions |
| getVisibleTaskCount | gets the number of tasks visible on the screen (those that are not collapsed) |
| getWBSCode | returns the WBS code (the outline number) of a task |
| getWorkHours | returns the working hours of the specified date |
| groupBy | groups tasks by the specified task's attribute |
| hasChild | returns the number of child task(s) |
| hideCover | hides the lightbox modal overlay that blocks interactions with the remaining screen |
| hideLightbox | closes the lightbox if it's currently active |
| hideQuickInfo | hides the pop-up task form (if it's currently active) |
| importFromExcel | converts an Excel file to JSON |
| importFromMSProject | converts an XML or MPP MS Project file to JSON |
| importFromPrimaveraP6 | converts an XML or XER Primavera P6 file to JSON |
| init | initializes a dhtmlxGantt inside a container |
| isChildOf | checks whether a task is a child of a different task |
| isCircularLink | checks whether the link is circular |
| isCriticalLink | checks whether the specified link is critical |
| isCriticalTask | checks whether the specified task is critical |
| isLinkAllowed | checks whether the specified link is correct |
| isLinkExists | checks whether the specified link exists |
| isReadonly | checks whether the specified task/link, or the whole Gantt is read-only |
| isSelectedTask | checks whether the specified task is currently selected |
| isSplitTask | checks whether the specified task is split |
| isSummaryTask | checks whether the specified task is summary |
| isTaskExists | checks whether the specified task exists |
| isTaskVisible | checks whether the specifies task is currently rendered in the Gantt chart |
| isUnscheduledTask | checks if the task is unscheduled |
| isWorkTime | checks whether the specified date is working or not |
| load | loads data to the gantt from an external data source |
| locate | gets the id of a task from the specified HTML event |
| mergeCalendars | merges several working calendars into one |
| message | calls a message box of the specified type |
| mixin | adds properties of the 'source' object into the 'target' object |
| modalbox | calls a modalbox |
| moveTask | moves a task to a new position |
| open | opens the branch with the specified id |
| parse | loads data from a client-side resource |
| plugins | activates specified extensions |
| posFromDate | gets the relative horizontal position of the specified date in the chart area |
| redo | applies the reverted changes to the gantt once again |
| refreshData | refreshes data in the Gantt chart |
| refreshLink | refreshes the specifies link |
| refreshTask | refreshes the task and its related links |
| removeLinkLayer | removes the specified layer related to a link |
| removeShortcut | removes a keyboard shortcut |
| removeTaskLayer | removes the specified layer related to a task |
| render | renders the whole Gantt chart |
| renderMarkers | updates all markers on the page |
| resetLayout | rebuilds the Gantt layout using the current value of the layout config |
| resetLightbox | removes the current lightbox's HTML object element |
| resetProjectDates | re-calculates the duration of a project task depending on the dates of its children |
| resetSkin | re-calculates the skin's settings from the related attached skin CSS file |
| resizeLightbox | forces the lightbox to resize |
| roundDate | rounds the specified date to the nearest date in the time scale |
| roundTaskDates | rounds the start and end task's dates to the nearest dates in the time scale |
| scrollLayoutCell | scrolls the layout view to the specified position |
| scrollTo | scrolls the Gantt container to the specified position |
| selectTask | selects the specified task |
| serialize | serializes the data into JSON or XML format |
| serverList | returns a list of options |
| setParent | set the parent for a task |
| setSizes | resizes the Gantt chart |
| setWorkTime | sets the working time for the Gantt chart |
| showCover | shows the lightbox modal overlay that blocks interactions with the remaining screen |
| showDate | scrolls the chart area to makes the specified date visible |
| showLightbox | opens the lightbox for the specified task |
| showQuickInfo | displays the pop-up task form for the specified task |
| showTask | makes the specified task visible on the screen |
| silent | makes all code inside it not to trigger internal events or server-side calls |
| sort | sorts tasks in the grid |
| toggleTaskSelection | selects the specified task if it was unselected and vice versa |
| uid | returns a unique id |
| undo | reverts the changes made in the gantt |
| unselectTask | removes selection from the selected task |
| unsetWorkTime | unsets a working time in the Gantt Chart |
| updateCollection | updates the specified collection with new options |
| updateLink | updates the specified dependency link |
| updateMarker | updates the specified marker |
| updateTask | updates the specified task |
| updateTaskAssignments | updates the resource property of the task object with the values of the resource assignments from the datastore |