Scrolling in JavaScript Gantt control

08 May 2023 / 3 minutes to read

The scrollbar will be displayed in the gantt when content exceeds the element width or height. The vertical and horizontal scrollbars will be displayed based on the following criteria:

The vertical scrollbar appears when the total height of rows present in the gantt exceeds its element height.
The horizontal scrollbar appears when the sum of columns width exceeds the grid pane size.
The height and width are used to set the gantt height and width, respectively.

The default value for height and width is auto.

Set width and height

We can even set pixel values to width and height of gantt container using width and height properties.

Source

Preview

index.ts

index.html

import { Gantt} from '@syncfusion/ej2-gantt';
import { GanttData } from 'datasource.ts';

let gantt: Gantt = new Gantt({
dataSource: GanttData,
height: '350px',
width: '600px',
taskFields: {
    id: 'TaskID',
    name: 'TaskName',
    startDate: 'StartDate',
    duration: 'Duration',
    progress: 'Progress',
    child: 'subtasks',
},
editSettings: {
    allowAdding: true,
    allowEditing: true,
    allowDeleting: true,
    allowTaskbarEditing: true,
    showDeleteConfirmDialog: true
},
});
gantt.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/ej2/21.2.3/material.css" rel="stylesheet" type="text/css"/>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
        <script src="systemjs.config.js"></script>
    </head>
<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='Gantt'></div>        
    </div>
</body>
</html>

Responsive with the parent container

Specify the width and height as 100% to make the gantt element fill its parent container. Setting the height to 100% requires the gantt parent element to have explicit height. Also, the component will be responsive when the parent container is resized.

Source

Preview

index.ts

index.html

import { Gantt} from '@syncfusion/ej2-gantt';
import { GanttData } from 'datasource.ts';

let gantt: Gantt = new Gantt({
dataSource: GanttData,
height: '100%',
width: '100%',
taskFields: {
    id: 'TaskID',
    name: 'TaskName',
    startDate: 'StartDate',
    duration: 'Duration',
    progress: 'Progress',
    child: 'subtasks',
},
editSettings: {
    allowAdding: true,
    allowEditing: true,
    allowDeleting: true,
    allowTaskbarEditing: true,
    showDeleteConfirmDialog: true
},
});
gantt.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/ej2/21.2.3/material.css" rel="stylesheet" type="text/css"/>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
    <style>
        .e-ganttresize {
            resize: both;
            overflow: auto;
            border: 1px solid red;
            padding: 10px;
            height: 300px;
            min-height: 250px;
            min-width: 250px;
        }
        .e-text{
            font-family: Helvetica, sans-serif;
            font-size: 14px;
        }
    </style>
</head>

<body>
       
    <div id='loader'>Loading....</div>
    <p class="e-text"> The parent container can be resizable by dragging the bottom-right corner.</p>
    <div id='container' class='e-ganttresize'>
        <div id='Gantt'></div>        
    </div>
</body>

</html>

Scroll To Date method

In the Gantt control, When We use the scrollToDate method, it will scroll the timeline horizontally to the date that we specified in the method’s argument.

The following code examples show how the scroll To Date method works in Gantt:

Source

Preview

index.ts

index.html

import { Gantt, Edit, Selection } from '@syncfusion/ej2-gantt';
import { Button } from '@syncfusion/ej2-buttons';
import { GanttData } from 'datasource.ts';

Gantt.Inject(Edit, Selection);

let gantt: Gantt = new Gantt({
dataSource: GanttData,
height: '450px',
taskFields: {
    id: 'TaskID',
    name: 'TaskName',
    startDate: 'StartDate',
    duration: 'Duration',
    progress: 'Progress',
    child: 'subtasks'
},
splitterSettings: {
    position: "50%"
}
projectStartDate: new Date('04/01/2019'),
projectEndDate: new Date('05/30/2019'),
});
gantt.appendTo('#Gantt');

let scrollBtn: Button = new Button();
scrollBtn.appendTo('#scroll');
document.getElementById('scroll').addEventListener('click', () => {
gantt.scrollToDate('05/27/2019');
});

<!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/ej2/21.2.3/material.css" rel="stylesheet" type="text/css"/>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
	<script src="es5-datasource.js" type="text/javascript"></script>
</head>

<body>
       
    <div id='loader'>Loading....</div>
	  <button id="scroll">Scroll To Date</button>  
    <div id='container'>
        <div id='Gantt'></div>        
    </div>
</body>

</html>

Set the vertical scroll position

In the Gantt control, you can set the vertical scroller position dynamically by clicking the custom button using the setScrollTop method.

Source

Preview

index.ts

index.html

import { Gantt, Edit, Selection } from '@syncfusion/ej2-gantt';
import { Button } from '@syncfusion/ej2-buttons';
import { data } from 'datasource.ts';

Gantt.Inject(Edit, Selection);

let gantt: Gantt = new Gantt({
dataSource: data,
height: '450px',
taskFields: {
    id: 'TaskID',
    name: 'TaskName',
    startDate: 'StartDate',
    duration: 'Duration',
    progress: 'Progress',
    child: 'subtasks'
},
splitterSettings: {
    position: "50%"
}
});
gantt.appendTo('#Gantt');

let scrollBtn: Button = new Button();
scrollBtn.appendTo('#scrollTop');

document.getElementById('scrollTop').addEventListener('click', () => {
gantt.ganttChartModule.scrollObject.setScrollTop(300);
});

<!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/ej2/21.2.3/material.css" rel="stylesheet" type="text/css"/>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
	<script src="es5-datasource.js" type="text/javascript"></script>
</head>

<body>
       
    <div id='loader'>Loading....</div>
	  <button id="scrollTop">Change Scroll Position</button>  
    <div id='container'>
        <div id='Gantt'></div>        
    </div>
</body>

</html>

Contents

Set width and height
Responsive with the parent container
Scroll To Date method
Set the vertical scroll position

Contents

Set width and height
Responsive with the parent container
Scroll To Date method
Set the vertical scroll position