Resource Multi Taskbar in React Gantt component

30 Jan 202524 minutes to read

Resource Multi Taskbar

To visualize multiple tasks assigned to each resource in a row when the records are in the collapsed state. It can be enabled by settings the enableMultiTaskbar property value as true.

The collapse or expand action of a resource record can be achieved only by using the tree grid side arrow icon. Because it will be disabled on chart side action for this support.

When a resource has multiple tasks scheduled on the same date, then the tasks will be overlapped one another. Taskbar editing is also possible to change the task scheduling on the collapsed state.

Note: By default, the enableMultiTaskbar property value is false.

index.jsx
index.tsx
index.html
let resourceCollection = [
    { resourceId: 1, resourceName: 'Martin Tamer', resourceGroup: 'Planning Team', isExpand: false},
    { resourceId: 2, resourceName: 'Rose Fuller', resourceGroup: 'Testing Team', isExpand: true},
    { resourceId: 3, resourceName: 'Margaret Buchanan', resourceGroup: 'Approval Team', isExpand: false }
];
let data = [
    {
        TaskID: 1,
        TaskName: 'Project initiation',
        StartDate: new Date('03/29/2019'),
        EndDate: new Date('04/21/2019'),
        subtasks: [
            {
                TaskID: 2, TaskName: 'Identify site location', StartDate: new Date('03/29/2019'), Duration: 3,
                Progress: 30, work: 10, resources: [{ resourceId: 1, resourceUnit: 50 }]
            },
            {
                TaskID: 3, TaskName: 'Perform soil test', StartDate: new Date('04/03/2019'), Duration: 4,
                resources: [{ resourceId: 1, resourceUnit: 70 }], Predecessor: 2, Progress: 30, work: 20
            },
            {
                TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/09/2019'), Duration: 4,
                resources: [{ resourceId: 1, resourceUnit: 25 }], Predecessor: 3, Progress: 30, work: 10,
            },
        ]
    },
    {
        TaskID: 5,
        TaskName: 'Project estimation', StartDate: new Date('03/29/2019'), EndDate: new Date('04/21/2019'),
        subtasks: [
            {
                TaskID: 6, TaskName: 'Develop floor plan for estimation', StartDate: new Date('04/01/2019'),
                Duration: 5, Progress: 30, resources: [{ resourceId: 2, resourceUnit: 50 }], work: 30
            },
            {
                TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Duration: 4,
                resources: [{ resourceId: 2, resourceUnit: 40 }], Predecessor: '6FS-2', Progress: 30, work: 40
            },
            {
                TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/09/2019'),
                Duration: 4, resources: [{ resourceId: 2, resourceUnit: 75 }], Predecessor: '7FS-1', Progress: 30, work: 60,
            }
        ]
    },
    {
        TaskID: 9,
        TaskName: 'Site work',
        StartDate: new Date('04/04/2019'),
        EndDate: new Date('04/21/2019'),
        subtasks: [
            {
                TaskID: 10, TaskName: 'Install temporary power service', StartDate: new Date('04/01/2019'), Duration: 14,
                Progress: 30, resources: [{ resourceId: 3, resourceUnit: 75 }]
            },
            {
                TaskID: 11, TaskName: 'Clear the building site', StartDate: new Date('04/08/2019'),
                Duration: 9, Progress: 30, Predecessor: '10FS-9', resources: [3]
            },
            {
                TaskID: 12, TaskName: 'Sign contract', StartDate: new Date('04/12/2019'),
                Duration: 5, resources: [3], Predecessor: '11FS-5'
            },
        ]
    }
];
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { GanttComponent, ColumnsDirective, ColumnDirective, Inject, Edit, Selection, Toolbar } from '@syncfusion/ej2-react-gantt';
function App () {
  
        const taskFields = {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
            endDate: 'EndDate',
            duration: 'Duration',
            progress: 'Progress',
            resourceInfo: 'resources',
            expandState: 'isExpand',
            child: 'subtasks'
        };
        const resourceFields = {
            id: 'resourceId',
            name: 'resourceName',
            unit: 'Unit',
            group: 'resourceGroup'
        };
        const editSettings = {
            allowAdding: true,
            allowEditing: true,
            allowDeleting: true,
            allowTaskbarEditing: true,
            showDeleteConfirmDialog: true
        };
        const toolbarOptions = ['Add', 'Edit', 'Update', 'Delete', 'Cancel', 'ExpandAll', 'CollapseAll'];
        const labelSettings = {
            rightLabel: 'resources',
            taskLabel: 'TaskName'
        };
        const projectStartDate = new Date('03/28/2019');
        const projectEndDate = new Date('05/18/2019');
        return <GanttComponent id='root' dataSource = { data } treeColumnIndex = {1} viewType = 'ResourceView' allowSelection = { true}
        allowResizing = { true} highlightWeekends = { true} toolbar = { toolbarOptions }
        editSettings = { editSettings } projectStartDate = { projectStartDate } projectEndDate = { projectEndDate }
        resourceFields = { resourceFields } taskFields = {taskFields } labelSettings = { labelSettings }
        resources = { resourceCollection } showOverAllocation = {true} enableMultiTaskbar = {true}>
            <ColumnsDirective>
            <ColumnDirective field= 'TaskID' > </ColumnDirective>
            <ColumnDirective field= 'TaskName'  headerText= 'Task Name'  width= '180' > </ColumnDirective>
            <ColumnDirective field= 'work'  headerText= 'Work' > </ColumnDirective>
            <ColumnDirective field= 'Progress' > </ColumnDirective>
            <ColumnDirective field= 'resourceGroup'  headerText= 'Group' > </ColumnDirective>
            <ColumnDirective field= 'StartDate' > </ColumnDirective>
            <ColumnDirective field= 'Duration' > </ColumnDirective>
            </ColumnsDirective>
            <Inject services={[ Toolbar, Edit, Selection ]}/>
            </GanttComponent>
};
ReactDOM.render(<App />, document.getElementById('root'));
let resourceCollection: object[] = [
    { ResourceId: 1, ResourceName: 'Martin Tamer', ResourceGroup: 'Planning Team', IsExpand: false },
    { ResourceId: 2, ResourceName: 'Rose Fuller', ResourceGroup: 'Testing Team', IsExpand: true },
    { ResourceId: 3, ResourceName: 'Margaret Buchanan', ResourceGroup: 'Approval Team', IsExpand: false }
];
let data = [
    {
        TaskID: 1, TaskName: 'Project initiation', StartDate: new Date('03/29/2019'), EndDate: new Date('04/21/2019'),
    },
    {
        TaskID: 2, TaskName: 'Identify site location', StartDate: new Date('03/29/2019'), Duration: 3,
        ParentID: 1, Progress: 30, work: 10, Resources: [{ ResourceId: 1, Unit: 50 }]
    },
    {
        TaskID: 3, TaskName: 'Perform soil test', StartDate: new Date('04/03/2019'), Duration: 4,
        ParentID: 1, Resources: [{ ResourceId: 1, Unit: 70 }], Predecessor: 2, Progress: 30, work: 20
    },
    {
        TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/09/2019'), Duration: 4,
        ParentID: 1, Resources: [{ ResourceId: 1, Unit: 25 }], Predecessor: 3, Progress: 30, work: 10,
    },
    {
        TaskID: 5, TaskName: 'Project estimation', StartDate: new Date('03/29/2019'), EndDate: new Date('04/21/2019'),
    },
    {
        TaskID: 6, TaskName: 'Develop floor plan for estimation', StartDate: new Date('04/01/2019'),
        Duration: 5, ParentID: 5, Progress: 30, Resources: [{ ResourceId: 2, Unit: 50 }], work: 30
    },
    {
        TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Duration: 4,
        ParentID: 5, Resources: [{ ResourceId: 2, Unit: 40 }], Predecessor: '6FS-2', Progress: 30, work: 40
    },
    {
        TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/09/2019'),
        Duration: 4, ParentID: 5, Resources: [{ ResourceId: 2, Unit: 75 }], Predecessor: '7FS-1', Progress: 30, work: 60,
    },
    {
        TaskID: 9, TaskName: 'Site work', StartDate: new Date('04/04/2019'), EndDate: new Date('04/21/2019'),
    },
    {
        TaskID: 10, TaskName: 'Install temporary power service', StartDate: new Date('04/01/2019'), Duration: 14,
        ParentID: 9, Progress: 30, Resources: [{ ResourceId: 3, Unit: 75 }]
    },
    {
        TaskID: 11, TaskName: 'Clear the building site', StartDate: new Date('04/08/2019'),
        Duration: 9, ParentID: 9, Progress: 30, Predecessor: '10FS-9', Resources: [3]
    },
    {
        TaskID: 12, TaskName: 'Sign contract', StartDate: new Date('04/12/2019'),
        Duration: 5, ParentID: 9, Resources: [3], Predecessor: '11FS-5'
    },
];
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { GanttComponent, ColumnsDirective, ColumnDirective, Inject, Edit, Selection, Toolbar, RowDD } from '@syncfusion/ej2-react-gantt';
function App () {
  
        const taskFields = {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
            endDate: 'EndDate',
            duration: 'Duration',
            progress: 'Progress',
            resourceInfo: 'Resources',
            expandState: 'IsExpand',
            parentID: 'ParentID'
        };
        const resourceFields = {
            id: 'ResourceId',
            name: 'ResourceName',
            unit: 'Unit',
            group: 'ResourceGroup'
        };
        const editSettings = {
            allowAdding: true,
            allowEditing: true,
            allowDeleting: true,
            allowTaskbarEditing: true,
            showDeleteConfirmDialog: true
        };
        const toolbarOptions = ['Add', 'Edit', 'Update', 'Delete', 'Cancel', 'ExpandAll', 'CollapseAll'];
        const labelSettings = {
            rightLabel: 'Resources',
            taskLabel: 'TaskName'
        };
        const projectStartDate = new Date('03/28/2019');
        const projectEndDate = new Date('05/18/2019');
        return <GanttComponent id='root' dataSource = { data } treeColumnIndex = {1} viewType = 'ResourceView' allowSelection = { true}
        allowResizing = { true} highlightWeekends = { true} toolbar = { toolbarOptions }
        editSettings = { editSettings } projectStartDate = { projectStartDate } projectEndDate = { projectEndDate }
        resourceFields = { resourceFields } taskFields = {taskFields } labelSettings = { labelSettings }
        resources = { resourceCollection } showOverAllocation = {true} enableMultiTaskbar = {true}>
            <ColumnsDirective>
            <ColumnDirective field= 'TaskID' > </ColumnDirective>
            <ColumnDirective field= 'TaskName'  headerText= 'Task Name'  width= '180' > </ColumnDirective>
            <ColumnDirective field= 'work'  headerText= 'Work' > </ColumnDirective>
            <ColumnDirective field= 'Progress' > </ColumnDirective>
            <ColumnDirective field= 'ResourceGroup'  headerText= 'Group' > </ColumnDirective>
            <ColumnDirective field= 'StartDate' > </ColumnDirective>
            <ColumnDirective field= 'Duration' > </ColumnDirective>
            </ColumnsDirective>
            <Inject services={[ Toolbar, Edit, Selection, RowDD ]}/>
            </GanttComponent>
};
ReactDOM.render(<App />, document.getElementById('root'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React Gantt</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 for React Components" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/material.css" rel="stylesheet" type="text/css"/>
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
     <style>
        #loader {
            color: #008cff;
            height: 40px;
            left: 45%;
            position: absolute;
            top: 45%;
            width: 30%;
        }
    </style>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
        <div id='root'>
            <div id='loader'>Loading....</div>
        </div>
</body>

</html>

Disable taskbar overlap

In Gantt, you can disable taskbar overlap between resource tasks using the allowTaskbarOverlap property. This prevents the taskbars for different tasks from overlapping on the same row, making it easier to distinguish between the different tasks and manage resources effectively.

When allowTaskbarOverlap is set to false, the resources are displayed in a single row and the row height will be extended to occupy the tasks of the resource when it is in a collapsed state. This view allows you to easily identify any overallocation of tasks for a resource in a project.

It’s important to note that when allowTaskbarOverlap is disabled, task dependencies or relationships cannot be established between tasks that are rendered in multiple lines for the same resource. If you need to establish dependencies between tasks for the same resource, you may want to consider enabling taskbar overlap.

index.jsx
index.tsx
index.html
let resourceCollection = [
    { ResourceId: 1, ResourceName: 'Martin Tamer', ResourceGroup: 'Planning Team', IsExpand: false },
    { ResourceId: 2, ResourceName: 'Rose Fuller', ResourceGroup: 'Testing Team', IsExpand: true },
    { ResourceId: 3, ResourceName: 'Margaret Buchanan', ResourceGroup: 'Approval Team', IsExpand: false }
];
let data = [
    {
        TaskID: 1, TaskName: 'Project initiation', StartDate: new Date('03/29/2019'), EndDate: new Date('04/21/2019'),
    },
    {
        TaskID: 2, TaskName: 'Identify site location', StartDate: new Date('03/29/2019'), Duration: 3,
        ParentID: 1, Progress: 30, work: 10, Resources: [{ ResourceId: 1, Unit: 50 }]
    },
    {
        TaskID: 3, TaskName: 'Perform soil test', StartDate: new Date('04/03/2019'), Duration: 4,
        ParentID: 1, Resources: [{ ResourceId: 1, Unit: 70 }], Predecessor: 2, Progress: 30, work: 20
    },
    {
        TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/09/2019'), Duration: 4,
        ParentID: 1, Resources: [{ ResourceId: 1, Unit: 25 }], Predecessor: 3, Progress: 30, work: 10,
    },
    {
        TaskID: 5, TaskName: 'Project estimation', StartDate: new Date('03/29/2019'), EndDate: new Date('04/21/2019'),
    },
    {
        TaskID: 6, TaskName: 'Develop floor plan for estimation', StartDate: new Date('04/01/2019'),
        Duration: 5, ParentID: 5, Progress: 30, Resources: [{ ResourceId: 2, Unit: 50 }], work: 30
    },
    {
        TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Duration: 4,
        ParentID: 5, Resources: [{ ResourceId: 2, Unit: 40 }], Predecessor: '6FS-2', Progress: 30, work: 40
    },
    {
        TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/09/2019'),
        Duration: 4, ParentID: 5, Resources: [{ ResourceId: 2, Unit: 75 }], Predecessor: '7FS-1', Progress: 30, work: 60,
    },
    {
        TaskID: 9, TaskName: 'Site work', StartDate: new Date('04/04/2019'), EndDate: new Date('04/21/2019'),
    },
    {
        TaskID: 10, TaskName: 'Install temporary power service', StartDate: new Date('04/01/2019'), Duration: 14,
        ParentID: 9, Progress: 30, Resources: [{ ResourceId: 3, Unit: 75 }]
    },
    {
        TaskID: 11, TaskName: 'Clear the building site', StartDate: new Date('04/08/2019'),
        Duration: 9, ParentID: 9, Progress: 30, Predecessor: '10FS-9', Resources: [3]
    },
    {
        TaskID: 12, TaskName: 'Sign contract', StartDate: new Date('04/12/2019'),
        Duration: 5, ParentID: 9, Resources: [3], Predecessor: '11FS-5'
    },
];
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { GanttComponent, ColumnsDirective, ColumnDirective, Inject, Edit, Selection, Toolbar } from '@syncfusion/ej2-react-gantt';
function App () {
  
        const taskFields = {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
            endDate: 'EndDate',
            duration: 'Duration',
            progress: 'Progress',
            resourceInfo: 'Resources',
            expandState: 'IsExpand',
            parentID: 'ParentID'
        };
        const resourceFields = {
            id: 'ResourceId',
            name: 'ResourceName',
            unit: 'Unit',
            group: 'ResourceGroup'
        };
        const editSettings = {
            allowAdding: true,
            allowEditing: true,
            allowDeleting: true,
            allowTaskbarEditing: true,
            showDeleteConfirmDialog: true
        };
        const toolbarOptions = ['Add', 'Edit', 'Update', 'Delete', 'Cancel', 'ExpandAll', 'CollapseAll'];
        const labelSettings = {
            rightLabel: 'Resources',
            taskLabel: 'TaskName'
        };
        const projectStartDate = new Date('03/28/2019');
        const projectEndDate = new Date('05/18/2019');
        return <GanttComponent id='root' dataSource = { data } treeColumnIndex = {1} viewType = 'ResourceView' allowSelection = { true}
        allowResizing = { true} highlightWeekends = { true} toolbar = { toolbarOptions } allowTaskbarOverlap = {false}
        editSettings = { editSettings } projectStartDate = { projectStartDate } projectEndDate = { projectEndDate }
        resourceFields = { resourceFields } taskFields = {taskFields } labelSettings = { labelSettings }
        resources = { resourceCollection } showOverAllocation = {true} enableMultiTaskbar = {true}>
            <ColumnsDirective>
            <ColumnDirective field= 'TaskID' > </ColumnDirective>
            <ColumnDirective field= 'TaskName'  headerText= 'Task Name'  width= '180' > </ColumnDirective>
            <ColumnDirective field= 'Progress' > </ColumnDirective>
            <ColumnDirective field= 'ResourceGroup'  headerText= 'Group' > </ColumnDirective>
            <ColumnDirective field= 'StartDate' > </ColumnDirective>
            <ColumnDirective field= 'Duration' > </ColumnDirective>
            </ColumnsDirective>
            <Inject services={[ Toolbar, Edit, Selection ]}/>
            </GanttComponent>
};
ReactDOM.render(<App />, document.getElementById('root'));
let resourceCollection: object[] = [
    { ResourceId: 1, ResourceName: 'Martin Tamer', ResourceGroup: 'Planning Team', IsExpand: false },
    { ResourceId: 2, ResourceName: 'Rose Fuller', ResourceGroup: 'Testing Team', IsExpand: true },
    { ResourceId: 3, ResourceName: 'Margaret Buchanan', ResourceGroup: 'Approval Team', IsExpand: false }
];
let data = [
    {
        TaskID: 1, TaskName: 'Project initiation', StartDate: new Date('03/29/2019'), EndDate: new Date('04/21/2019'),
    },
    {
        TaskID: 2, TaskName: 'Identify site location', StartDate: new Date('03/29/2019'), Duration: 3,
        ParentID: 1, Progress: 30, work: 10, Resources: [{ ResourceId: 1, Unit: 50 }]
    },
    {
        TaskID: 3, TaskName: 'Perform soil test', StartDate: new Date('04/03/2019'), Duration: 4,
        ParentID: 1, Resources: [{ ResourceId: 1, Unit: 70 }], Predecessor: 2, Progress: 30, work: 20
    },
    {
        TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/09/2019'), Duration: 4,
        ParentID: 1, Resources: [{ ResourceId: 1, Unit: 25 }], Predecessor: 3, Progress: 30, work: 10,
    },
    {
        TaskID: 5, TaskName: 'Project estimation', StartDate: new Date('03/29/2019'), EndDate: new Date('04/21/2019'),
    },
    {
        TaskID: 6, TaskName: 'Develop floor plan for estimation', StartDate: new Date('04/01/2019'),
        Duration: 5, ParentID: 5, Progress: 30, Resources: [{ ResourceId: 2, Unit: 50 }], work: 30
    },
    {
        TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Duration: 4,
        ParentID: 5, Resources: [{ ResourceId: 2, Unit: 40 }], Predecessor: '6FS-2', Progress: 30, work: 40
    },
    {
        TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/09/2019'),
        Duration: 4, ParentID: 5, Resources: [{ ResourceId: 2, Unit: 75 }], Predecessor: '7FS-1', Progress: 30, work: 60,
    },
    {
        TaskID: 9, TaskName: 'Site work', StartDate: new Date('04/04/2019'), EndDate: new Date('04/21/2019'),
    },
    {
        TaskID: 10, TaskName: 'Install temporary power service', StartDate: new Date('04/01/2019'), Duration: 14,
        ParentID: 9, Progress: 30, Resources: [{ ResourceId: 3, Unit: 75 }]
    },
    {
        TaskID: 11, TaskName: 'Clear the building site', StartDate: new Date('04/08/2019'),
        Duration: 9, ParentID: 9, Progress: 30, Predecessor: '10FS-9', Resources: [3]
    },
    {
        TaskID: 12, TaskName: 'Sign contract', StartDate: new Date('04/12/2019'),
        Duration: 5, ParentID: 9, Resources: [3], Predecessor: '11FS-5'
    },
];
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { GanttComponent, ColumnsDirective, ColumnDirective, Inject, Edit, Selection, Toolbar } from '@syncfusion/ej2-react-gantt';
function App () {
  
        const taskFields = {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
            endDate: 'EndDate',
            duration: 'Duration',
            progress: 'Progress',
            resourceInfo: 'Resources',
            expandState: 'IsExpand',
            parentID: 'ParentID'
        };
        const resourceFields = {
            id: 'ResourceId',
            name: 'ResourceName',
            unit: 'Unit',
            group: 'ResourceGroup'
        };
        const editSettings = {
            allowAdding: true,
            allowEditing: true,
            allowDeleting: true,
            allowTaskbarEditing: true,
            showDeleteConfirmDialog: true
        };
        const toolbarOptions = ['Add', 'Edit', 'Update', 'Delete', 'Cancel', 'ExpandAll', 'CollapseAll'];
        const labelSettings = {
            rightLabel: 'Resources',
            taskLabel: 'TaskName'
        };
        const projectStartDate = new Date('03/28/2019');
        const projectEndDate = new Date('05/18/2019');
        return <GanttComponent id='root' dataSource = { data } treeColumnIndex = {1} viewType = 'ResourceView' allowSelection = { true}
        allowResizing = { true} highlightWeekends = { true} toolbar = { toolbarOptions } allowTaskbarOverlap = {false}
        editSettings = { editSettings } projectStartDate = { projectStartDate } projectEndDate = { projectEndDate }
        resourceFields = { resourceFields } taskFields = {taskFields } labelSettings = { labelSettings }
        resources = { resourceCollection } showOverAllocation = {true} enableMultiTaskbar = {true}>
            <ColumnsDirective>
            <ColumnDirective field= 'TaskID' > </ColumnDirective>
            <ColumnDirective field= 'TaskName'  headerText= 'Task Name'  width= '180' > </ColumnDirective>
            <ColumnDirective field= 'Progress' > </ColumnDirective>
            <ColumnDirective field= 'ResourceGroup'  headerText= 'Group' > </ColumnDirective>
            <ColumnDirective field= 'StartDate' > </ColumnDirective>
            <ColumnDirective field= 'Duration' > </ColumnDirective>
            </ColumnsDirective>
            <Inject services={[ Toolbar, Edit, Selection ]}/>
            </GanttComponent>
};
ReactDOM.render(<App />, document.getElementById('root'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React Gantt</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 for React Components" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/material.css" rel="stylesheet" type="text/css"/>
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
     <style>
        #loader {
            color: #008cff;
            height: 40px;
            left: 45%;
            position: absolute;
            top: 45%;
            width: 30%;
        }
    </style>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
        <div id='root'>
            <div id='loader'>Loading....</div>
        </div>
</body>

</html>