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Getting started in EJ2 JavaScript Dropdown button control

10 Feb 202612 minutes to read

This section explains the steps required to create a simple Essential® JS 2 Dropdown button and demonstrate the basic usage of the Dropdown button control in a JavaScript application.

Dependencies

The list of dependencies required to use the Dropdown button component in your application is given below:

|-- @syncfusion/ej2-buttons
    |-- @syncfusion/ej2-base

Setup for local environment

Refer to the following steps to set up your local environment.

Step 1: Create a root folder named my-app for your application.

Step 2: Create a my-app/resources folder to store local scripts and styles files.

Step 3: Open Visual Studio Code and create my-app/index.js and my-app/index.html files to initialize the Essential® JS 2 Dropdown button control.

Adding Syncfusion® resources

The Essential® JS 2 Dropdown button control can be initialized by using either of the following ways.

  • Using local script and style.
  • Using CDN link for script and style.

Using local script and style references in a HTML page

Step 1: Create an app folder quickstart for getting started.

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

Syntax:

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

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

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

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

Example:

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

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

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

Control Styles: C:\Program Files (x86)\Syncfusion\Essential Studio\JavaScript - EJ2\16.3.0.17\Web (Essential JS 2)\JavaScript\ej2-split buttons\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

The Custom Resource Generator (CRG) is an online web tool, which can be used to generate the custom script and styles for a set of specific controls. This web tool is useful to combine the required control scripts and styles in a single file.

Step 3: Create a folder ~/quickstart/resources and copy/paste the global scripts and styles from the above installed location to ~/quickstart/resources/package corresponding package location.

Step 4: Create a HTML page (index.html) in ~/quickstart/index.html 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 DropDownButton's dependency style -->
            <link href="resources/base/material.css" rel="stylesheet" type="text/css"/>
            <link href="resources/buttons/material.css" rel="stylesheet" type="text/css"/>
            <link href="resources/popups/material.css" rel="stylesheet" type="text/css"/>

            <!-- Essential JS 2 DropDownButton's control style -->
            <link href="resources/splitbuttons/material.css" rel="stylesheet" type="text/css"/>

            <!-- Essential JS 2 DropDownButton's dependency global script -->
            <script src="resources/base/ej2-base.min.js" type="text/javascript"></script>
            <script src="resources/buttons/ej2-buttons.min.js" type="text/javascript"></script>
            <script src="resources/popups/ej2-popups.min.js" type="text/javascript"></script>

            <!-- Essential JS 2 DropDownButton's control global script -->
            <script src="resources/splitbuttons/ej2-splitbuttons.min.js" type="text/javascript"></script>
       </head>
       <body>
       </body>
  </html>

Step 5: Now, add the DropDownButton element and initiate the Syncfusion® JavaScript DropDownButton 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 DropDownButton's dependency style -->
            <link href="resources/base/material.css" rel="stylesheet" type="text/css"/>
            <link href="resources/buttons/material.css" rel="stylesheet" type="text/css"/>
            <link href="resources/popups/material.css" rel="stylesheet" type="text/css"/>

            <!-- Essential JS 2 DropDownButton's control style -->
            <link href="resources/splitbuttons/material.css" rel="stylesheet" type="text/css"/>

            <!-- Essential JS 2 DropDownButton's dependency global script -->
            <script src="resources/base/ej2-base.min.js" type="text/javascript"></script>
            <script src="resources/buttons/ej2-buttons.min.js" type="text/javascript"></script>
            <script src="resources/popups/ej2-popups.min.js" type="text/javascript"></script>

            <!-- Essential JS 2 DropDownButton's control global script -->
            <script src="resources/splitbuttons/ej2-splitbuttons.min.js" type="text/javascript"></script>
       </head>
       <body>
            <!--element which is going to render-->
            <button id='element'>Edit</button>
            <script>
                //Initialize action items.
                var items = [
                {
                  text: 'Cut'
                },
                {
                  text: 'Copy'
                },
                {
                  text: 'Paste'
                }];

                // initialize DropDownButton control
                var drpDownBtn = new ej.splitbuttons.DropDownButton({items: items});

                // Render initialized DropDownButton.
                drpDownBtn.appendTo('#element');
            </script>
       </body>
  </html>

Step 6: Now, run the index.html in web browser, it will render the Syncfusion® JavaScript DropDownButton control.

Step 1: Create an app folder quickstart for the Essential® JS 2 JavaScript controls.

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

Syntax:

Dependency Script: https://cdn.syncfusion.com/ej2/{DEPENDENCY_PACKAGE_NAME}/dist/global/{PACKAGE_NAME}.min.js

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

Dependency Styles: https://cdn.syncfusion.com/ej2/{DEPENDENCY_PACKAGE_NAME}/styles/material.css

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

Example:

Script: https://cdn.syncfusion.com/ej2/ej2-splitbuttons/dist/global/ej2-splitbuttons.min.js

Styles: https://cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css

Step 3: Create a HTML page (index.html) in ~/quickstart/index.html location and add the CDN link references. Now, add the
DropDownButton element and initiate the Syncfusion® JavaScript DropDownButton 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 DropDownButton's dependency style -->
        <link href="https://cdn.syncfusion.com/ej2/32.2.3/ej2-base/styles/material.css" rel="stylesheet" type="text/css"/>
        <link href="https://cdn.syncfusion.com/ej2/32.2.3/ej2-buttons/styles/material.css" rel="stylesheet" type="text/css"/>
        <link href="https://cdn.syncfusion.com/ej2/32.2.3/ej2-popups/styles/material.css" rel="stylesheet" type="text/css"/>

        <!-- Essential JS 2 DropDownButton's control style -->
        <link href="https://cdn.syncfusion.com/ej2/32.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet" type="text/css"/>

        <!-- Essential JS 2 DropDownButton's dependency global script -->
       <script src="https://cdn.syncfusion.com/ej2/32.2.3/ej2-base/dist/global/ej2-base.min.js" type="text/javascript"></script>
       <script src="https://cdn.syncfusion.com/ej2/32.2.3/ej2-buttons/dist/global/ej2-buttons.min.js" type="text/javascript"></script>
       <script src="https://cdn.syncfusion.com/ej2/32.2.3/ej2-popups/dist/global/ej2-popups.min.js" type="text/javascript"></script>

       <!-- Essential JS 2 DropDownButton's control global script -->
        <script src="https://cdn.syncfusion.com/ej2/32.2.3/ej2-splitbuttons/dist/global/ej2-splitbuttons.min.js" type="text/javascript"></script>
   <script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
   <body>
        <!--element which is going to render-->
        <button id='element'>Edit</button>
        <script>
            ej.base.enableRipple(true);

            //Initialize action items.
            var items = [
            {
              text: 'Cut'
            },
            {
              text: 'Copy'
            },
            {
              text: 'Paste'
            }];

            // initialize DropDownButton control
            var drpDownBtn = new ej.splitbuttons.DropDownButton({items: items});

            // Render initialized DropDownButton.
            drpDownBtn.appendTo('#element');
        </script>
   </body>
  </html>

Step 4: Now, run the index.html in web browser, it will render the Syncfusion® JavaScript DropDownButton control.

See Also