Searching in EJ2 TypeScript Treegrid control

27 Apr 202317 minutes to read

You can search records in a TreeGrid, by using the search method with search key as a parameter. This also provides an option to integrate search text box in treegrid’s toolbar by adding search item to the toolbar.

To search records, inject the Filter module in the treegrid.

index.ts
index.html
import { TreeGrid, Filter, Toolbar } from '@syncfusion/ej2-treegrid';
import { sampleData } from './datasource.ts';

TreeGrid.Inject(Filter, Toolbar);

let treeGridObj: TreeGrid = new TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Search'],
    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="https://cdn.syncfusion.com/ej2/27.1.48/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-grids/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-treegrid/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-navigations/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-dropdowns/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-lists/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-calendars/styles/material.css" rel="stylesheet" />
    
    
    
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    
    
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='TreeGrid'></div>        
    </div>
</body>
</html>

Initial search

To apply search at initial rendering, set the fields, operator, key, and ignoreCase in the searchSettings.

index.ts
index.html
import { TreeGrid, Filter, Toolbar } from '@syncfusion/ej2-treegrid';
import { sampleData } from './datasource.ts';

TreeGrid.Inject(Filter, Toolbar);

let treeGridObj: TreeGrid = new TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Search'],
    searchSettings: { fields: ['taskName'], operator: 'contains', key: 'plan', ignoreCase: true },
    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="https://cdn.syncfusion.com/ej2/27.1.48/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-grids/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-treegrid/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-navigations/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-dropdowns/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-lists/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-calendars/styles/material.css" rel="stylesheet" />
    
    
    
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    
    
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='TreeGrid'></div>        
    </div>
</body>
</html>

By default, treegrid searches all the bound column values. To customize this behavior define the searchSettings.fields property.

Search operators

The search operator can be defined in the searchSettings.operator property to configure specific searching.

The following operators are supported in searching:

Operator	Description
startsWith	Checks whether a value begins with the specified value.
endsWith	Checks whether a value ends with the specified value.
contains	Checks whether a value contains the specified value.
equal	Checks whether a value is equal to the specified value.
notEqual	Checks for values not equal to the specified value.

By default, the searchSettings.operator value is contains.

Search by external button

To search treegrid records from an external button, invoke the search method.

index.ts
index.html
import { TreeGrid, Filter } from '@syncfusion/ej2-treegrid';
import { Button } from '@syncfusion/ej2-buttons';
import { sampleData } from './datasource.ts';

TreeGrid.Inject(Filter);

let treeGridObj: TreeGrid = new TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    height: 220,
    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');

let searchBtn: Button = new Button();
searchBtn.appendTo('#search');

document.getElementById('search').addEventListener('click', () => {
    let searchText: string = (<HTMLInputElement>document.getElementsByClassName('searchtext')[0]).value;
    treeGridObj.search(searchText);
});
<!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/ej2/27.1.48/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-grids/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-treegrid/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-navigations/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-dropdowns/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-lists/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-calendars/styles/material.css" rel="stylesheet" />
    
    
    
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    
    
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div class="e-float-input" style="width: 200px; display: inline-block;">
            <input type="text" class="searchtext"/>
            <span class="e-float-line"></span>
            <label class="e-float-text">Search text</label>
        </div>                   
        <button id="search">Search</button>       
        <div id='TreeGrid'></div>        
    </div>
</body>
</html>

Search specific columns

By default, treegrid searches all visible columns. You can search specific columns by defining the specific column’s field names in the searchSettings.fields property.

index.ts
index.html
import { TreeGrid, Filter, Toolbar } from '@syncfusion/ej2-treegrid';
import { sampleData } from './datasource.ts';

TreeGrid.Inject(Filter, Toolbar);

let treeGridObj: TreeGrid = new TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    toolbar: ['Search'],
    searchSettings: { fields: ['taskName', 'duration']},
    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="https://cdn.syncfusion.com/ej2/27.1.48/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-grids/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-treegrid/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-navigations/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-dropdowns/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-lists/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-calendars/styles/material.css" rel="stylesheet" />
    
    
    
    <link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    
    
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='TreeGrid'></div>        
    </div>
</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.