JavaScript (ES5)

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Selection in JavaScript (ES5) TreeGrid control

18 May 2022 / 9 minutes to read

Selection provides an option to highlight a row or a cell. It can be done through simple mouse down or arrow keys. To disable selection in TreeGrid, set the allowSelection to false.

The treegrid supports two types of selection that can be set by using the selectionSettings.type. They are:

Single: The Single value is set by default, and it only allows selection of a single row or a cell.
Multiple: Allows you to select multiple rows or cells. To perform the multi-selection, press and hold CTRL key and click the desired rows or cells. To select range of rows or cells, press and hold the SHIFT key and click the rows or cells.

Source

Preview

index.js

index.html

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    selectionSettings: { type: 'Multiple' },
    height: 270,
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', width: 90, textAlign: 'Right' },
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' },
        { field: 'progress', headerText: 'progress', width: 80, textAlign: 'Right' }
    ]
});

treeGridObj.appendTo('#TreeGrid');

<!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/ej2/20.1.55/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/20.1.55/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>

Selection Mode

TreeGrid supports three types of selection mode which can be set by using selectionSettings.mode. They are:

Row - The row value is set by default. Allows you to select rows only.
Cell - Allows you to select cells only.
Both - Allows you to select rows and cells at the same time.

Source

Preview

index.js

index.html

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    height: 410,
    selectionSettings: { mode: 'Both'},
    treeColumnIndex: 1,
    columns: [
            { field: 'taskID', headerText: 'Task ID', width: 90, textAlign: 'Right' },
            { field: 'taskName', headerText: 'Task Name', width: 150 },
            { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' },
            { field: 'progress', headerText: 'progress', width: 80, textAlign: 'Right' }
    ]
});

treeGridObj.appendTo('#TreeGrid');

<!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/ej2/20.1.55/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/20.1.55/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>

Cell selection

Cell Selection can be done through simple Mouse down or Arrow keys(up, down, left and right).

TreeGrid supports two types of cell selection mode which can be set by using selectionSettings.cellSelectionMode. They are:

Flow - The Flow value is set by default. Select range of cells between the start index and end index which includes in between cells of rows.
Box - Select range of cells within the start and end column indexes which includes in between cells of rows within the range.

Source

Preview

index.js

index.html

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    height: 410,
    selectionSettings: { cellSelectionMode: 'Box', type: 'Multiple', mode: 'Cell' },
    treeColumnIndex: 1,
    columns: [
            { field: 'taskID', headerText: 'Task ID', width: 90, textAlign: 'Right' },
            { field: 'taskName', headerText: 'Task Name', width: 150 },
            { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' },
            { field: 'progress', headerText: 'progress', width: 80, textAlign: 'Right' }
    ]
});

treeGridObj.appendTo('#TreeGrid');

<!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/ej2/20.1.55/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/20.1.55/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>

Checkbox selection

Checkbox selection provides an option to select multiple treegrid records with help of checkbox in each row.

To render the checkbox in each treegrid row, you need to use checkbox column with type as checkbox using the column type property.

Source

Preview

index.js

index.html

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    height: 315,
    treeColumnIndex: 2,
    columns: [
            { type: 'checkbox', width: 60 },
            { field: 'taskID', headerText: 'Task ID', width: 90, textAlign: 'Right' },
            { field: 'taskName', headerText: 'Task Name', width: 150 },
            { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' },
            { field: 'progress', headerText: 'progress', width: 80, textAlign: 'Right' }
    ]
});

treeGridObj.appendTo('#TreeGrid');

<!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/ej2/20.1.55/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/20.1.55/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>

By default, selection is allowed by clicking a treegrid row or checkbox in that row. To allow selection only through checkbox, you can set the selectionSettings.checkboxOnly property to true.

Selection can be persisted in all the operations using the selectionSettings.persistSelection property. For persisting selection on the treegrid, any one of the columns should be defined as a primary key using the columns.isPrimaryKey property.

Checkbox selection Mode

In checkbox selection, selection can also be done by clicking on rows. This selection provides two types of Checkbox Selection mode which can be set by using the following API, selectionSettings.checkboxMode. The modes are;

Default: This is the default value of the checkboxMode. In this mode, user can select multiple rows by clicking rows one by one.
ResetOnRowClick: In ResetOnRowClick mode, when user clicks on a row it will reset previously selected row. Also you can perform multiple-selection in this mode by press and hold CTRL key and click the desired rows. To select range of rows, press and hold the SHIFT key and click the rows.

Source

Preview

index.js

index.html

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    height: 315,
    selectionSettings: {checkboxMode: 'ResetOnRowClick'},
    treeColumnIndex: 2,
    columns: [
            { type: 'checkbox', width: 60 },
            { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right' },
            { field: 'taskName', headerText: 'Task Name', width: 150 },
            { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' },
            { field: 'progress', headerText: 'progress', width: 80, textAlign: 'Right' }
    ]
});

treeGridObj.appendTo('#TreeGrid');

<!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/ej2/20.1.55/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/20.1.55/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>

Toggle Selection

The Toggle selection allows to perform selection and unselection of the particular row or cell. To enable toggle selection, set enableToggle property of the selectionSettings as true. If you click on the selected row or cell then it will be unselected and vice versa.

Source

Preview

index.js

index.html

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    height: 410,
    selectionSettings: { enableToggle :true },
    treeColumnIndex: 1,
    columns: [
            { field: 'taskID', headerText: 'Task ID', width: 90, textAlign: 'Right' },
            { field: 'taskName', headerText: 'Task Name', width: 150 },
            { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' },
            { field: 'progress', headerText: 'progress', width: 80, textAlign: 'Right' }
    ]
});

treeGridObj.appendTo('#TreeGrid');

<!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/ej2/20.1.55/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/20.1.55/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>

If multi selection is enabled, then first click on any selected row (without pressing Ctrl key), it will clear the multi selection and in second click on the same row, it will be unselected.

Select row at Initial rendering

To select a row at initial rendering, set the selectedRowIndex value.

Source

Preview

index.js

index.html

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    selectionSettings: { type: 'Multiple', mode: 'Both' },
    selectedRowIndex: 1,
    height: 270,
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', width: 90, textAlign: 'Right' },
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' },
        { field: 'progress', headerText: 'progress', width: 80, textAlign: 'Right' }
    ]
});

treeGridObj.appendTo('#TreeGrid');

<!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/ej2/20.1.55/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/20.1.55/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>

Get selected row indexes

You can get the selected row indexes by using the getSelectedRowIndexes method.

Source

Preview

index.js

index.html

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    selectionSettings: { type: 'Multiple' },
    rowSelected: rowSelected,
    height: 270,
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', width: 90, textAlign: 'Right' },
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' },
        { field: 'progress', headerText: 'progress', width: 80, textAlign: 'Right' }
    ]
});

treeGridObj.appendTo('#TreeGrid');

function rowSelected(args) {
    var selectedrowindex = treeGridObj.getSelectedRowIndexes();  // get the selected row indexes.
    alert(selectedrowindex); // to alert the selected row indexes.
    var selectedrecords = treeGridObj.getSelectedRecords();  // get the selected records.
}

<!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/ej2/20.1.55/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/20.1.55/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>

Touch interaction

When you tap a treegrid row on touchscreen device, the tapped row is selected. It also shows a popup Multi Row selection for multi-row selection. To select multiple rows or cells, tap the popup Multi Row or Cells and then tap the desired rows or cells.

Multi-selection requires the selection type to be multiple.

The following screenshot represents a treegrid touch selection in the device.

Multiple Selection based on condition

You can select multiple treegrid rows based on condition by using the selectRows method.

In the following code, the rows which contains taskID value as 3 and 5 are selected at initial rendering.

Source

Preview

index.js

index.html

var treeGridObj = new ej.treegrid.TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    selectionSettings: { type: 'Multiple' },
    dataBound: ()=>{   
        var rowIndexes =[];          
        treeGridObj.grid.dataSource.forEach((data,index)=>{
		if (data.taskID === 3 || data.taskID === 5){
               rowIndexes.push(index);
           }
		});
        treeGridObj.selectRows(rowIndexes);
    },
    height: 270,
    treeColumnIndex: 1,
    columns: [
        { field: 'taskID', headerText: 'Task ID', width: 90, textAlign: 'Right' },
        { field: 'taskName', headerText: 'Task Name', width: 180 },
        { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' },
        { field: 'progress', headerText: 'progress', width: 80, textAlign: 'Right' }
    ]
});

treeGridObj.appendTo('#TreeGrid');

<!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/ej2/20.1.55/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-grids/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-treegrid/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-navigations/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-calendars/styles/material.css" rel="stylesheet">
    
    
    
    <link href="//cdn.syncfusion.com/ej2/20.1.55/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    
    
    
    
<script src="https://cdn.syncfusion.com/ej2/20.1.55/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>

You can refer to our JavaScript Tree Grid feature tour page for its groundbreaking feature representations. You can also explore our JavaScript Tree Grid example JavaScript Tree Grid example to knows how to present and manipulate data.

Contents

Selection Mode
Cell selection
Checkbox selection
Checkbox selection Mode
Toggle Selection
Select row at Initial rendering
Get selected row indexes
Touch interaction
Multiple Selection based on condition

Contents

Selection Mode
Cell selection
Checkbox selection
Checkbox selection Mode
Toggle Selection
Select row at Initial rendering
Get selected row indexes
Touch interaction
Multiple Selection based on condition

Please provide additional information

Thank you for your feedback and comments.We will rectify this as soon as possible!