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Footer Aggregate in JavaScript (ES5) Tree Grid control

08 May 2023 / 2 minutes to read

Footer aggregate value is calculated for all the rows, and it is displayed in the footer cells. Use the footerTemplate property to render the aggregate value in footer cells.

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index.js
index.html
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ej.treegrid.TreeGrid.Inject(ej.treegrid.Aggregate);

var treeGridObj = new ej.treegrid.TreeGrid({
        dataSource: summaryRowData,
        childMapping: 'children',
        treeColumnIndex: 0,
        height: 260,
        columns: [
            { field: 'FreightID', headerText: 'Freight ID', width: 130 },
            { field: 'FreightName', width: 195, headerText: 'Freight Name' },
            { field: 'UnitWeight', headerText: 'Weight Per Unit', type: 'number', width: 130, textAlign: 'Right' },
            { field: 'TotalUnits', headerText: 'Total Units', type: 'number', width: 125, textAlign: 'Right' }
        ],
        aggregates: [{
            showChildSummary: false,
            columns: [
                {
                    type: 'Max',
                    field: 'UnitWeight',
                    columnName: 'UnitWeight',
                    footerTemplate: 'Maximum: ${Max}'
                },
                {
                type: 'Min',
                field: 'TotalUnits',
                columnName: 'TotalUnits',
                footerTemplate: 'Minimum: ${Min}'
            }]
        }]
    });
    treeGridObj.appendTo('#TreeGrid');
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<!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="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/21.2.3/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></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 aggregate values must be accessed inside the template using their corresponding type name.

How to format aggregate value

You can format the aggregate value result by using the format property.

Source
Preview
index.js
index.html
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ej.treegrid.TreeGrid.Inject(ej.treegrid.Aggregate);

var treeGridObj = new ej.treegrid.TreeGrid({
        dataSource: summaryData,
        childMapping: 'subtasks',
        treeColumnIndex: 0,
        height: 260,
        columns: [
            { field: 'category', headerText: 'Category', width: 160 },
            { field: 'units', headerText: 'Total Units', width: 130, type: 'number', textAlign: 'Right' },
            { field: 'unitPrice', headerText: 'Unit Price($)', width: 110, type: 'number', format: 'C2', textAlign: 'Right' },
            { field: 'price', headerText: 'Price($)', width: 160, textAlign: 'Right', type: 'number', format: 'C2' },
        ],
        aggregates: [{
            columns: [
                {
                    type: 'Sum',
                    field: 'price',
                    columnName: 'price',
                    format: 'C2',
                    footerTemplate: 'Total: ${Sum}'
                }]
        }]
    });
    treeGridObj.appendTo('#TreeGrid');
Copied to clipboard
<!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="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/21.2.3/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></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>
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