Scrolling in EJ2 JavaScript Grid control

5 Apr 202524 minutes to read

The scrolling feature in the EJ2 JavaScript Grid control allows you to navigate through the content that extends beyond the visible area of the grid. It provides scrollbars that are automatically displayed when the content exceeds the specified width or height of the grid element. This feature is useful when you have a large amount of data or when the content needs to be displayed within a limited space. 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 grid exceeds its element height.
The horizontal scrollbar appears when the sum of columns width exceeds the grid element width.
The height and width are used to set the grid height and width, respectively.

The default value for heightand width is auto.

Set width and height

The EJ2 JavaScript Grid control offers a straightforward method to tailor the width and height of the scroller to meet your specific requirements. This is particularly useful when you want precise control over the dimensions of the scroller. To achieve this, you can use pixel values as numbers for the width and height properties of the Grid.

In the following example, the scrollbar is enabled, and the grid’s height is set to 315 pixels, while the width is set to 400 pixels:

index.js
index.html
var grid = new ej.grids.Grid({
    dataSource: data,
    height: 315,
    width: 400,
    columns: [
        { field: 'OrderID', headerText: 'Order ID', textAlign: 'Right', width: 120 },
        { field: 'CustomerID', headerText: 'Customer ID', width: 150 },
        { field: 'EmployeeID', headerText: 'Employee ID', textAlign: 'Right', width: 120 },
        { field: 'ShipCity', headerText: 'Ship City', width: 150 },
        { field: 'ShipCountry', headerText: 'Ship Country', width: 150 },
        { field: 'ShipName', headerText: 'Ship Name', width: 150 }
    ]
});
grid.appendTo('#Grid');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-base/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-grids/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-buttons/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-popups/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-navigations/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-dropdowns/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-lists/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-inputs/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-calendars/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-splitbuttons/styles/bootstrap5.css" rel="stylesheet">  
<script src="https://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="Grid"></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>

Responsive with parent container

The Grid control allows you to create a responsive layout by making it fill its parent container and automatically adjust its size based on the available space and changes in the container’s dimensions. This capability is particularly useful for building applications that need to adapt to various screen sizes and devices.

To achieve this, you need to specify the width and height properties of the Grid as 100%. However, keep in mind that setting the height property to 100% requires the Grid’s parent element to have an explicit height defined.

In the following example, the parent container has explicit height and width set, and the Grid container’s height and width are both set to 100%. This ensures that the Grid adjusts its size responsively based on the dimensions of the parent container:

index.js
index.html
var grid = new ej.grids.Grid({
    dataSource: data,
    height: '100%',
    width: '100%',
    columns: [
        { field: 'OrderID', headerText: 'Order ID', textAlign: 'Right', width: 120 },
        { field: 'CustomerID', headerText: 'Customer ID', width: 150 },
        { field: 'Freight', headerText: 'Freight', textAlign: 'Right', width: 120 },
        { field: 'ShipAddress', headerText: 'Ship Address', width: 150 }
    ]
});
grid.appendTo('#Grid');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-base/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-grids/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-buttons/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-popups/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-navigations/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-dropdowns/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-lists/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-inputs/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-calendars/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-splitbuttons/styles/bootstrap5.css" rel="stylesheet">
    <script src="https://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
    <script src="es5-datasource.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id="container" style="height:500px;width:600px">
        <div id="Grid"></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>

Sticky header

The EJ2 JavaScript Grid control provides a feature that allows you to make column headers remain fixed while scrolling, ensuring they stay visible at all times. To achieve this, you can utilize the enableStickyHeader property by setting it to true.

In the below demo, the Grid headers will be sticky while scrolling the Grid’s parent div element.

index.js
index.html
var grid = new ej.grids.Grid({
    dataSource: data,
    columns: [
        { field: 'OrderID', headerText: 'Order ID', textAlign: 'Right', width: 120 },
        { field: 'CustomerID', headerText: 'Customer ID', width: 150 },
        { field: 'Freight', headerText: 'Freight', textAlign: 'Right', width: 120 },
        { field: 'ShipAddress', headerText: 'Ship Address', width: 150 },
    ]
});
grid.appendTo('#Grid');

var toggle = new ej.buttons.Switch({
    change: toggleStickyHeader,
});
toggle.appendTo('#switch');

function toggleStickyHeader(args) {
    grid.enableStickyHeader = args.checked;
}
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-base/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-grids/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-buttons/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-popups/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-navigations/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-dropdowns/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-lists/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-inputs/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-calendars/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-splitbuttons/styles/bootstrap5.css" rel="stylesheet">
<script src="https://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
<body>
    
    <div id="container" style="height:350px;">
        <div>
            <label style="padding: 10px 10px">Enable/Disable Sticky Header</label>
            <input type="checkbox"  id="switch">
        </div>
        <div id="Grid"></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>

Scroll to selected row

The EJ2 JavaScript Grid control allows you to scroll the grid content to the position of the selected row, ensuring that the selected row is automatically brought into view. This feature is particularly useful when dealing with a large dataset and wanting to maintain focus on the selected row. To achieve this, you can utilize the rowSelected event provided by the Grid.

The following example that demonstrates how to use the rowSelected event to scroll to the selected row:

index.js
index.html
var grid = new ej.grids.Grid({
    dataSource: data,
    height: 315,
    width: '100%',
    rowSelected: rowSelected,
    columns: [
        { field: 'OrderID', headerText: 'Order ID', textAlign: 'Right', width: 120 },
        { field: 'CustomerID', headerText: 'Customer ID', width: 150 },
        { field: 'Freight', headerText: 'Freight', textAlign: 'Right', width: 120 },
        { field: 'ShipAddress', headerText: 'Ship Address', width: 150 }
    ]
});
grid.appendTo('#Grid');

var dropDownData = [
    { text: 'Select count' },
    { text: '10', value: '10' },
    { text: '20', value: '20' },
    { text: '30', value: '30' },
    { text: '80', value: '80' },
    { text: '100', value: '100' },
    { text: '200', value: '200' },
    { text: '232', value: '232' },
    { text: '300', value: '300' },
    { text: '500', value: '500' },
    { text: '800', value: '800' },
    { text: '820', value: '850' },
    { text: '920', value: '920' },
    { text: '2020', value: '2020' },
    { text: '3000', value: '3000' },
    { text: '4000', value: '4000' },
    { text: '4999', value: '4999' }
];

var dropdown = new ej.dropdowns.DropDownList({
    value: 'Select count',
    popupHeight: '240px',
    width: 120,
    dataSource: dropDownData,
    change: valueChange
});
dropdown.appendTo('#dropdowns');

function valueChange(args) {
    grid.selectionModule.selectRow(parseInt(args.value, 10));
}

function rowSelected() {
    var rowHeight = grid.getRows()[grid.getSelectedRowIndexes()[0]].scrollHeight;
    grid.getContent().children[0].scrollTop = rowHeight * grid.getSelectedRowIndexes()[0];
}
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-base/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-grids/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-buttons/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-popups/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-navigations/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-dropdowns/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-lists/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-inputs/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-calendars/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-splitbuttons/styles/bootstrap5.css" rel="stylesheet">  
<script src="https://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
<body>
    
    <div id="container" style="height:350px;">
        <div style="padding-bottom: 10px">
            <label padding: 30px 20px 0 0>Select row index :</label>
            <input type="text" tabindex="1" id="dropdowns" />
            <div id="dropdowns"></div>
        </div>
        <div id="Grid"></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>

Hide the empty placeholder of scrollbar

The Syncfusion Grid control provides a feature to hide the empty placeholder of the scrollbar, offering a cleaner interface without unnecessary scrollbars. To achieve this, you can utilize the hideScroll method. This method allows you to determine whether the scrollbar should be hidden based on the content’s overflow.

The following example that demonstrates how to use the hideScroll method inside the dataBound event:

index.js
index.html
var grid = new ej.grids.Grid({
    dataSource: data.slice(0, 2),
    height: 315,
    width: '100%',
    dataBound: dataBound,
    columns: [
        { field: 'OrderID', headerText: 'Order ID', textAlign: 'Right', width: 120 },
        { field: 'CustomerID', headerText: 'Customer ID', width: 150 },
        { field: 'EmployeeID', headerText: 'Employee ID', textAlign: 'Right', width: 120 },
        { field: 'ShipCity', headerText: 'Ship City', width: 150 },
        { field: 'ShipCountry', headerText: 'Ship Counry', width: 150 },
        { field: 'ShipName', headerText: 'Ship Name', textAlign: 'Right', width: 150 }
    ]
});
grid.appendTo('#Grid');

function dataBound() {
    grid.hideScroll();
}
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-base/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-grids/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-buttons/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-popups/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-navigations/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-dropdowns/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-lists/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-inputs/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-calendars/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-splitbuttons/styles/bootstrap5.css" rel="stylesheet">
<script src="https://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
<body>  
    <div id="container" style="height:350px;">
        <div id="Grid"></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>

Render scrollbar in both top and bottom

The Syncfusion EJ2 JavaScript Grid allows rendering scrollbars at both the top and bottom, enhancing horizontal navigation for large datasets. This feature ensures users can scroll the Grid from either direction, enhancing usability and accessibility.

Steps to render scrollbars at the top in the Grid:

Add a Scrollbar - Insert a <div id="scroller"> above the Grid in the template to act as a top scrollbar.
Initialize Scrollbar in created Event - Retrieve the Grid’s content and move the scroller div above it dynamically.
Synchronize Scroll Events - Link onscroll events of the scroller div and the Grid content to scroll together.
Adjust Scrollbar Width and Visibility - Use setScroller() to match the scrollbar width with the Grid and update it on window resize.

The following example demonstrates how to use the created event to insert a scrollbar at the top of the Grid content:

index.js
index.html
var grid = new ej.grids.Grid({
    dataSource: data,
    height: 315, 
    width: 500,
    created: created,
    columns: [
        { field: 'OrderID', headerText: 'Order ID', textAlign: 'Right', width: 90 },
        { field: 'CustomerID', headerText: 'Customer ID', width: 100 },
        { field: 'EmployeeID', headerText: 'Employee ID', textAlign: 'Right', width: 80 },
        { field: 'OrderDate', headerText: 'Order Date', width: 140, format: 'yMd', textAlign: 'Right' },
        { field: 'Freight', headerText: 'Freight', width: 80 },
        { field: 'ShipName', headerText: 'Ship Name', width: 130 },
        { field: 'ShipAddress', headerText: 'Ship Address', width: 140 },
        { field: 'ShipCity', headerText: 'Ship City', width: 100 },
        { field: 'ShipCountry', headerText: 'Ship Country', width: 100 },
        { field: 'ShipRegion', headerText: 'Ship Region', width: 80 },
        { field: 'ShipPostalCode', headerText: 'Ship Postal Code', width: 110 }
    ]
});
grid.appendTo('#Grid');

function created() {
    const scroller = document.getElementById('scroller');
    const content = grid.getContent().firstElementChild;
    const contentTable = grid.getContentTable();

    grid.element.insertBefore(scroller, content.parentElement);

    scroller.onscroll = () => (content.scrollLeft = scroller.scrollLeft);
    content.onscroll = () => (scroller.scrollLeft = content.scrollLeft);

    const setScroller = () => {
      scroller.innerHTML = `<div style="width: ${contentTable.offsetWidth}px; height: 18px;"></div>`;
      scroller.style.height = content.scrollWidth <= content.clientWidth ? '0px' : '18px';
    };
    
    setScroller();
    window.onresize = setScroller;
};
<!DOCTYPE html>
<html lang="en">
<head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript Grid Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-base/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-grids/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-buttons/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-popups/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-navigations/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-dropdowns/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-lists/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-inputs/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-calendars/styles/bootstrap5.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-splitbuttons/styles/bootstrap5.css" rel="stylesheet">
    <script src="https://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
    <script src="es5-datasource.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
<body>
    <div id="container" style="height:350px;">
        <div id="scroller" style="width: 100%; overflow-x: auto"></div>
        <div id="Grid"></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>