This sample explains the way of rendering built-in and custom toolbar items at the same time.
Custom toolbar items can be added by defining the toolbar as a collection of ItemModels. Actions for this customized toolbar items are defined in the toolbarClick event. In this sample, the custom toolbar element Quick Filter and Clear Filter is rendered along with predefined toolbar items ExpandAll and CollapseAll. While clicking the Quick Filter toolbar item, the filtering occurs for Task Namecolumn.Filtered column can be cleared using Clear Filter toolbar item. More information on the Essential® JS2 Gantt Chart can be found in this documentation section.