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Tooltip in JavaScript (ES5) Gantt control

The Gantt control has a support to display a tooltip for various UI elements like taskbar, timeline cells, and grid cells

Enable tooltip

In the Gantt control, you can enable or disable the mouse hover tooltip for the following UI elements using the tooltipSettings.showTooltip property:

  • Taskbar
  • Connector line
  • Baseline
  • Event marker
Source
Preview
index.js
index.html
ej.gantt.Gantt.Inject(ej.gantt.DayMarkers);
var ganttData = [
        {
            TaskID: 1,
            TaskName: 'Project Initiation',
            StartDate: new Date('04/02/2019'),
            EndDate: new Date('04/21/2019'),
            subtasks: [
                { TaskID: 2, TaskName: 'Identify Site location',BaselineStartDate: new Date('04/02/2019'),BaselineEndDate: new Date('04/02/2019'), StartDate: new Date('04/02/2019'), Duration: 0, Progress: 50 },
                { TaskID: 3, TaskName: 'Perform Soil test', StartDate: new Date('04/02/2019'),BaselineStartDate: new Date('04/04/2019'),BaselineEndDate: new Date('04/09/2019'), Duration: 4, Progress: 50  },
                { TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/02/2019'),BaselineStartDate: new Date('04/08/2019'),BaselineEndDate: new Date('04/12/2019'), Duration: 4,Predecessor:"2FS", Progress: 50 },
            ]
        },
        {
            TaskID: 5,
            TaskName: 'Project Estimation',
            StartDate: new Date('04/02/2019'),
            EndDate: new Date('04/21/2019'),
            subtasks: [
                { TaskID: 6, TaskName: 'Develop floor plan for estimation',BaselineStartDate: new Date('04/04/2019'),BaselineEndDate: new Date('04/08/2019'), StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50 },
                { TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'),BaselineStartDate: new Date('04/02/2019'),BaselineEndDate: new Date('04/04/2019'), Duration: 3, Progress: 50 },
                { TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/02/2019'),BaselineStartDate: new Date('04/02/2019'),BaselineEndDate: new Date('04/08/2019'), Duration: 0,Predecessor:"6SS", Progress: 50 }
            ]
        },
    ];
	
var ganttChart = new ej.gantt.Gantt({
         dataSource: ganttData,
		 height:'450px',
		 taskFields: {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
            duration: 'Duration',
			baselineStartDate:"BaselineStartDate",
			baselineEndDate:"BaselineEndDate",
            progress: 'Progress',
			dependency: 'Predecessor',
            child: 'subtasks'
        },
		eventMarkers: [
            {
                day: '04/10/2019',
                label: 'Project approval and kick-off' 
            }
        ],
	    renderBaseline:true,
		baselineColor:'red',
		tooltipSettings:{
		   showTooltip:true
		}
});
ganttChart.appendTo('#Gantt');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Gantt</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Gantt Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
	<link href="https://cdn.syncfusion.com/ej2/material.css" rel="stylesheet" type="text/css">
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>

<body>
   
    
    <div id="container">
        <div id="Gantt"></div>        
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

The default value of the tooltipSettings.showTooltip property is true.

Timeline cells tooltip

In the Gantt control, you can enable or disable the mouse hover tooltip of timeline cells using the timelineSettings.showTooltip property. The default value of this property is true. The following code example shows how to enable the timeline cells tooltip in Gantt.

Source
Preview
index.js
index.html
var ganttChart = new ej.gantt.Gantt({
        dataSource: GanttData,
		height:'450px',
		taskFields: {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
			duration: 'Duration',
            progress: 'Progress',
			child: 'subtasks'
        },
		timelineSettings: {
            showTooltip: true
        }
	});
ganttChart.appendTo('#Gantt');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Gantt</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Gantt Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
	<link href="https://cdn.syncfusion.com/ej2/material.css" rel="stylesheet" type="text/css">
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>

<body>
   
    
    <div id="container">
        <div id="Gantt"></div>        
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Cell tooltip

You can enable or disable the Grid cell tooltip using the columns.clipMode property.

Source
Preview
index.js
index.html
var ganttChart = new ej.gantt.Gantt({
        dataSource: GanttData,
		height:'450px',
		taskFields: {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
			duration: 'Duration',
            progress: 'Progress',
			child: 'subtasks'
        },
		columns: [
            { field: 'TaskID', headerText: 'Task ID', textAlign: 'Left', width: '100' },
            { field: 'TaskName', headerText: 'Task Name', width: '150', clipMode: 'EllipsisWithTooltip' },
            { field: 'StartDate', headerText: 'Start Date', width: '150' },
            { field: 'Duration', headerText: 'Duration', width: '150',clipMode: 'Clip' },
            { field: 'Progress', headerText: 'Progress', width: '150' }
        ]
    });
ganttChart.appendTo('#Gantt');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Gantt</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Gantt Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
	<link href="https://cdn.syncfusion.com/ej2/material.css" rel="stylesheet" type="text/css">
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>

<body>
   
    
    <div id="container">
        <div id="Gantt"></div>        
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Clip mode

The clip mode provides options to display its overflow cell content and it can be defined by the columns.clipMode property.

The following are three types of clipMode:

  • Clip: Truncates the cell content when it overflows its area.
  • Ellipsis: Displays ellipsis when content of the cell overflows its area.
  • EllipsisWithTooltip: Displays ellipsis when content of the cell overflows its area; it displays the tooltip content when hover over ellipsis.

NOTE By default, all the column’s clipMode property is defined as EllipsisWithTooltip.

Tooltip template

Taskbar tooltip

The default tooltip in the Gantt control can be customized using the tooltipSettings.taskbar property. You can map the template script element’s ID value or template string directly to this property.

Source
Preview
index.js
index.html
var ganttChart = new ej.gantt.Gantt({
        dataSource: GanttData,
		height:'450px',
		taskFields: {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
			duration: 'Duration',
            progress: 'Progress',
			child: 'subtasks'
        },
		tooltipSettings: {
            showTooltip: true,
            taskbar: '#taskbarTooltip'
	    }
});
ganttChart.appendTo('#Gantt');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Gantt</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Gantt Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
	<link href="https://cdn.syncfusion.com/ej2/material.css" rel="stylesheet" type="text/css">
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>

<body>
    <script type="text/x-jsrender" id="taskbarTooltip">
	    <div>TaskID: ${TaskID}</div>
    </script>
   
    <div id="container">
        <div id="Gantt"></div>        
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Connector line tooltip

The default connector line tooltip in the Gantt control can be customized using the tooltipSettings.connectorLine property. You can map the value to this property as template script element ID or template string format. The following code example shows how to use the tooltipSettings.connectorLine property.

Source
Preview
index.js
index.html
var ganttChart = new ej.gantt.Gantt({
         dataSource: GanttData,
		 height:'450px',
		 taskFields: {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
            duration: 'Duration',
		    progress: 'Progress',
			dependency: 'Predecessor',
            child: 'subtasks'
        },
		tooltipSettings: {
            showTooltip: true,
            connectorLine: '#dependencyLineTooltip'
        }
});
ganttChart.appendTo('#Gantt');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Gantt</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Gantt Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
	<link href="https://cdn.syncfusion.com/ej2/material.css" rel="stylesheet" type="text/css">
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>

<body>
   
    <script type="text/x-jsrender" id="dependencyLineTooltip">
        <div>Offset : ${offsetString}</div>
    </script>
	
    <div id="container">
        <div id="Gantt"></div>        
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Taskbar editing tooltip

The taskbar editing tooltip can be customized using the tooltipSettings.editing property. The following code example shows how to customize the taskbar editing tooltip in Gantt.

Source
Preview
index.js
index.html
ej.gantt.Gantt.Inject(ej.gantt.Edit);
var ganttChart = new ej.gantt.Gantt({
        dataSource: GanttData,
		height:'450px',
		taskFields: {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
			duration: 'Duration',
            progress: 'Progress',
			child: 'subtasks'
        },
		editSettings: {
		   allowEditing:true,
           allowTaskbarEditing:true
        },
	    tooltipSettings: {
            showTooltip: true,
            editing: '#editingTooltip'
	    }
});
ganttChart.appendTo('#Gantt');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Gantt</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Gantt Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
	<link href="https://cdn.syncfusion.com/ej2/material.css" rel="stylesheet" type="text/css">
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>

<body>
    <script type="text/x-jsrender" id="editingTooltip">
        <div>Duration : ${duration}</div>
    </script>
    
    <div id="container">
        <div id="Gantt"></div>        
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Baseline tooltip

A baseline tooltip can be customized using the tooltipSettings.baseline property. The following code example shows how to customize the baseline tooltip in Gantt.

Source
Preview
index.js
index.html
var GanttData = [
        {
            TaskID: 1,
            TaskName: 'Project Initiation',
            StartDate: new Date('04/02/2019'),
            EndDate: new Date('04/21/2019'),
            subtasks: [
                { TaskID: 2, TaskName: 'Identify Site location',BaselineStartDate: new Date('04/02/2019'),BaselineEndDate: new Date('04/02/2019'), StartDate: new Date('04/02/2019'), Duration: 0, Progress: 50 },
                { TaskID: 3, TaskName: 'Perform Soil test', StartDate: new Date('04/02/2019'),BaselineStartDate: new Date('04/04/2019'),BaselineEndDate: new Date('04/09/2019'), Duration: 4, Progress: 50  },
                { TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/02/2019'),BaselineStartDate: new Date('04/08/2019'),BaselineEndDate: new Date('04/12/2019'), Duration: 4, Progress: 50 },
            ]
        },
        {
            TaskID: 5,
            TaskName: 'Project Estimation',
            StartDate: new Date('04/02/2019'),
            EndDate: new Date('04/21/2019'),
            subtasks: [
                { TaskID: 6, TaskName: 'Develop floor plan for estimation',BaselineStartDate: new Date('04/04/2019'),BaselineEndDate: new Date('04/08/2019'), StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50 },
                { TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'),BaselineStartDate: new Date('04/02/2019'),BaselineEndDate: new Date('04/04/2019'), Duration: 3, Progress: 50 },
                { TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/02/2019'),BaselineStartDate: new Date('04/02/2019'),BaselineEndDate: new Date('04/08/2019'), Duration: 0, Progress: 50 }
            ]
        },
    ];
	
var ganttChart = new ej.gantt.Gantt({
         dataSource: GanttData,
		 height:'450px',
		 taskFields: {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
            duration: 'Duration',
			baselineStartDate:"BaselineStartDate",
			baselineEndDate:"BaselineEndDate",
            progress: 'Progress',
		    child: 'subtasks'
        },
		tooltipSettings: {
            showTooltip: true,
            baseline: '#baselineTooltip'
        },
	    renderBaseline:true,
		baselineColor:'red'
		
});
ganttChart.appendTo('#Gantt');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Gantt</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Gantt Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
	<link href="https://cdn.syncfusion.com/ej2/material.css" rel="stylesheet" type="text/css">
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>

<body>
   
    <script type="text/x-jsrender" id="baselineTooltip">
        <div>Baseline StartDate : ${this.getFormatedDate(BaselineStartDate)}</div>
    </script>
    
    
    <div id="container">
        <div id="Gantt"></div>        
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>