Es5 getting started in EJ2 JavaScript TreeView control

6 May 202513 minutes to read

The Essential^® JS 2 for JavaScript (global script) is an ES5 formatted pure JavaScript framework which can be directly used in latest web browsers.

Controls Initialization

Create an app folder myapp in local machine to initialize Essential^® JS 2 JavaScript control.

Using either of the following way to refer the required script and styles.

Using local script and style references in a HTML page.
Using CDN link for script and style reference.

Using local script and style references in a HTML page

Step 1: Create an app folder myapp for Essential^® JS 2 JavaScript control.

Step 2: You can get the global scripts and styles from the Essential Studio^® JavaScript (Essential^® JS 2) build installed location.

Syntax:

Script: **(installed location)**\Syncfusion\Essential Studio\JavaScript - EJ2\{RELEASE_VERSION}\Web (Essential JS 2)\JavaScript\{PACKAGE_NAME}\dist\global\{PACKAGE_NAME}.min.js

Styles: **(installed location)**\Syncfusion\Essential Studio\JavaScript - EJ2\{RELEASE_VERSION}\Web (Essential JS 2)\JavaScript\{PACKAGE_NAME}\styles\material.css

Example:

Script: C:\Program Files (x86)\Syncfusion\Essential Studio\JavaScript - EJ2\16.3.0.17\Web (Essential JS 2)\JavaScript\ej2-navigations\dist\global\ej2-navigations.min.js

Styles: C:\Program Files (x86)\Syncfusion\Essential Studio\JavaScript - EJ2\16.3.0.17\Web (Essential JS 2)\JavaScript\ej2-navigations\styles\material.css

The below located script and style file contains all Syncfusion^® JavaScript (ES5) UI control resources in a single file.

Scripts: **(installed location)**\Syncfusion\Essential Studio\JavaScript - EJ2\{RELEASE_VERSION}\Web (Essential JS 2)\JavaScript\ej2\dist\ej2.min.js

Styles: **(installed location)**\Syncfusion\Essential Studio\JavaScript - EJ2\{RELEASE_VERSION}\Web (Essential JS 2)\JavaScript\ej2\material.css

Step 3: Create a folder myapp/resources and copy/paste the above mentioned packages from the above installed location to myapp/resources location.

Step 4: Create a HTML page (index.html) in myapp location and add the Essential^® JS 2 script and style references.

<!DOCTYPE html>
  <html xmlns="http://www.w3.org/1999/xhtml">
       <head>
            <title>Essential JS 2</title>
            <!-- Essential JS 2 material theme -->
            <link href="resources/material.css" rel="stylesheet" type="text/css"/>

            <!-- Essential JS 2 TreeView's dependent script -->
            <script src="resources/ej2-base.min.js" type="text/javascript"></script>
            <script src="resources/ej2-data.min.js" type="text/javascript"></script>
            <script src="resources/ej2-inputs.min.js" type="text/javascript"></script>
            <script src="resources/ej2-popups.min.js" type="text/javascript"></script>
            <script src="resources/ej2-lists.min.js" type="text/javascript"></script>
            <script src="resources/ej2-buttons.min.js" type="text/javascript"></script>
            <script src="resources/ej2-navigations.min.js" type="text/javascript"></script>
          
            <!-- Essential JS 2 TreeView's global script -->
            <script src="resources/ej2.min.js" type="text/javascript"></script>
       </head>
       <body>
       </body>
  </html>

Step 5: Now, add the div element and initiate the Essential^® JS 2 TreeView control in the index.html by using following code

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
    <title>Essential JS 2</title>
    <!-- Essential JS 2 material theme -->
    <link href="resources/material.css" rel="stylesheet" type="text/css"/>

    <!-- Essential JS 2 TreeView's dependent script -->
    <script src="resources/ej2-base.min.js" type="text/javascript"></script>
    <script src="resources/ej2-data.min.js" type="text/javascript"></script>
    <script src="resources/ej2-inputs.min.js" type="text/javascript"></script>
    <script src="resources/ej2-popups.min.js" type="text/javascript"></script>
    <script src="resources/ej2-lists.min.js" type="text/javascript"></script>
    <script src="resources/ej2-buttons.min.js" type="text/javascript"></script>
    <script src="resources/ej2-navigations.min.js" type="text/javascript"></script>
  
    <!-- Essential JS 2 TreeView's global script -->
    <script src="resources/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    <!-- Add the HTML <div> element  -->
    <div id="tree"></div>
    <script>
        var data = [
            {
                nodeId: '01', nodeText: 'Music',
                nodeChild: [
                    { nodeId: '01-01', nodeText: 'Gouttes.mp3' }
                ]
            },
            {
                nodeId: '02', nodeText: 'Videos', expanded: true,
                nodeChild: [
                    { nodeId: '02-01', nodeText: 'Naturals.mp4' },
                    { nodeId: '02-02', nodeText: 'Wild.mpeg' },
                ]
            },
            {
                nodeId: '03', nodeText: 'Documents',
                nodeChild: [
                    { nodeId: '03-01', nodeText: 'Environment Pollution.docx' },
                    { nodeId: '03-02', nodeText: 'Global Water, Sanitation, & Hygiene.docx' },
                    { nodeId: '03-03', nodeText: 'Global Warming.ppt' },
                    { nodeId: '03-04', nodeText: 'Social Network.pdf' },
                    { nodeId: '03-05', nodeText: 'Youth Empowerment.pdf' },
                ]
            },
        ];
        //Initialize TreeView control
        var treeViewInstance = new ej.navigations.TreeView({
            fields: { dataSource: data, id: 'nodeId', text: 'nodeText', child: 'nodeChild' }
        });

        //Render initialized TreeView
        treeViewInstance.appendTo("#tree");
    </script>
</body>

</html>

Step 6: Now, run the index.html in web browser, it will render the Essential^® JS 2 TreeView control.

Using CDN link for script and style reference

Step 1: Create an app folder myapp for the Essential^® JS 2 JavaScript control.

Step 2: The Essential^® JS 2 control’s global scripts and styles are already hosted in the below CDN link formats.

Syntax:

Script: http://cdn.syncfusion.com/ej2/{PACKAGE_NAME}/dist/global/{PACKAGE_NAME}.min.js

Styles: http://cdn.syncfusion.com/ej2/{PACKAGE_NAME}/styles/material.css

Example:

Script: http://cdn.syncfusion.com/ej2/ej2-navigations/dist/global/ej2-navigations.min.js

Styles: http://cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css

Step 3: Create a HTML page (index.html) in myapp location and add the CDN link references. Now, add the TreeView element and initiate the Essential^® JS 2 TreeView control in the index.html by using following code.

index.html
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Essential JS 2 for TreeView</title>
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-navigations/styles/material.css" rel="stylesheet"
        type="text/css" />
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-base/styles/material.css" rel="stylesheet" type="text/css" />
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-buttons/styles/material.css" rel="stylesheet"
        type="text/css" />
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-inputs/styles/material.css" rel="stylesheet"
        type="text/css" />

    <!-- Essential JS 2 TreeView's global script -->
    <script src="//cdn.syncfusion.com/ej2/21.2.3/dist/ej2.min.js" type="text/javascript"></script>

<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <!--Element which will render as TreeView-->
    <div id='container'>
        <div id='treeparent'
            style="display: block;border: 1px solid #dddddd;border-radius: 3px;overflow: auto;max-width: 350px;max-height: 350px;margin: auto;">
            <div id="tree"></div>
        </div>
    </div>

    <script>
        ej.base.enableRipple(true);

        //define the array of JSON
        var data = [
            {
                nodeId: '01', nodeText: 'Music',
                nodeChild: [
                    { nodeId: '01-01', nodeText: 'Gouttes.mp3' }
                ]
            },
            {
                nodeId: '02', nodeText: 'Videos', expanded: true,
                nodeChild: [
                    { nodeId: '02-01', nodeText: 'Naturals.mp4' },
                    { nodeId: '02-02', nodeText: 'Wild.mpeg' },
                ]
            },
            {
                nodeId: '03', nodeText: 'Documents',
                nodeChild: [
                    { nodeId: '03-01', nodeText: 'Environment Pollution.docx' },
                    { nodeId: '03-02', nodeText: 'Global Water, Sanitation, & Hygiene.docx' },
                    { nodeId: '03-03', nodeText: 'Global Warming.ppt' },
                    { nodeId: '03-04', nodeText: 'Social Network.pdf' },
                    { nodeId: '03-05', nodeText: 'Youth Empowerment.pdf' },
                ]
            },
        ];
        //Initialize TreeView control
        var treeViewInstance = new ej.navigations.TreeView({
            fields: { dataSource: data, id: 'nodeId', text: 'nodeText', child: 'nodeChild' }
        });

        //Render initialized TreeView
        treeViewInstance.appendTo("#tree");
    </script>

</body>

</html>

Step 4: Now, run the index.html in web browser, it will render the Essential^® JS 2 Accordion control.

You can also explore our JavaScript (ES5) TreeView to knows how to present and manipulate data.