Getting Started

28 Jun 202517 minutes to read

This section explains you about how to create a simple Dropdown Tree component and configure its available functionalities in React.

Dependencies

The following list of dependencies are required to use the Dropdown Tree component in your application.

|-- @syncfusion/ej2-react-dropdowns
    |-- @syncfusion/ej2-base
    |-- @syncfusion/ej2-data
    |-- @syncfusion/ej2-react-base
    |-- @syncfusion/ej2-dropdowns
        |-- @syncfusion/ej2-lists
        |-- @syncfusion/ej2-inputs
        |-- @syncfusion/ej2-navigations
        |-- @syncfusion/ej2-popups
            |-- @syncfusion/ej2-buttons

Installation and configuration

To easily set up a React application, use create-vite-app, which provides a faster development environment, smaller bundle sizes, and optimized builds compared to traditional tools like create-react-app. For detailed steps, refer to the Vite installation instructions. Vite sets up your environment using JavaScript and optimizes your application for production.

Note: To create a React application using create-react-app, refer to this documentation for more details.

To create a new React application, run the following command.

npm create vite@latest my-app

To set-up a React application in TypeScript environment, run the following command.

npm create vite@latest my-app -- --template react-ts
cd my-app
npm run dev

To set-up a React application in JavaScript environment, run the following command.

npm create vite@latest my-app -- --template react
cd my-app
npm run dev

Adding syncfusion® packages

All the available Essential® JS 2 packages are published in npmjs.com public registry. You can choose the component that you want to install.

To install Dropdown Tree component, use the following command

npm install @syncfusion/ej2-react-dropdowns --save

Adding Dropdown Tree component

Now, you can start adding Dropdown Tree component in the application. For getting started, add the Dropdown Tree component in src/App.tsx file using following code. Add the below code in the src/App.tsx to initialize the Dropdown Tree.

import { DropDownTreeComponent } from '@syncfusion/ej2-react-dropdowns';
import * as React from 'react';
import * as ReactDOM from "react-dom";

function App() {
  return (
      // specifies the tag for render the DropDownTree component
    <DropDownTreeComponent id='dropdowntree'/>
  );
}
export default App;
ReactDOM.render(<App />, document.getElementById('sample'));
import { DropDownTreeComponent } from '@syncfusion/ej2-react-dropdowns';
import * as React from 'react';
import * as ReactDOM from "react-dom";
function App() {
    return (
    // specifies the tag for render the DropDownTree component
    <DropDownTreeComponent id='dropdowntree'/>);
}
export default App;
ReactDOM.render(<App />, document.getElementById('sample'));

Adding CSS reference

Import the Dropdown Tree component required CSS references as follows in src/App.css.

/* import the Dropdown Tree dependency styles */

@import "../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../node_modules/@syncfusion/ej2-inputs/styles/material.css";
@import "../node_modules/@syncfusion/ej2-buttons/styles/material.css";
@import "../node_modules/@syncfusion/ej2-navigations/styles/material.css";
@import "../node_modules/@syncfusion/ej2-react-dropdowns/styles/material.css";

Binding data source

The Dropdown Tree component can load the data either from local data sources or remote data services. This can be done using the dataSource property that is a member of the fields property. The dataSource property supports array of JavaScript objects and DataManager. Here, an array of JSON values is passed to the Dropdown Tree component.

import { DropDownTreeComponent } from '@syncfusion/ej2-react-dropdowns';
import * as React from 'react';
import * as ReactDOM from 'react-dom';

function App() {
  // definining the dataSource
  let data: { [key: string]: Object }[] = [
     {
        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' },
        ]
     },
    ];
  let fields: Object = { dataSource: data, value: 'nodeId', text: 'nodeText', child: 'nodeChild' };
  return (
      // specifies the tag for render the DropDownTree component
    <DropDownTreeComponent id="dropdowntree" fields={fields} />
  );
}
export default App;
ReactDOM.render(<App />, document.getElementById('sample'));
import { DropDownTreeComponent } from '@syncfusion/ej2-react-dropdowns';
import * as React from 'react';
import * as ReactDOM from 'react-dom';
function App() {
    // definining the dataSource
    let 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' },
            ]
        },
    ];
    let fields = { dataSource: data, value: 'nodeId', text: 'nodeText', child: 'nodeChild' };
    return (
    // specifies the tag for render the DropDownTree component
    <DropDownTreeComponent id="dropdowntree" fields={fields}/>);
}
export default App;
ReactDOM.render(<App />, document.getElementById('sample'));

Run the application

Now run the npm run dev command in the console to start the development server. This command compiles your code and serves the application locally, opening it in the browser.

npm run dev

import { DropDownTreeComponent } from '@syncfusion/ej2-react-dropdowns';
import * as React from 'react';
import * as ReactDOM from 'react-dom';
function App() {
    // definining the dataSource
    let 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' },
            ]
        },
    ];
    let fields = { dataSource: data, value: 'nodeId', text: 'nodeText', child: 'nodeChild' };
    return (
        // specifies the tag for render the DropDownTree component
        <DropDownTreeComponent id="dropdowntree" fields={fields} />);
}
export default App;
ReactDOM.render(<App />, document.getElementById('sample'));
import { DropDownTreeComponent } from '@syncfusion/ej2-react-dropdowns';
import * as React from 'react';
import * as ReactDOM from 'react-dom';

function App() {
  // definining the dataSource
  let data: { [key: string]: Object }[] = [
    {
      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' },
      ]
    },
  ];
  let fields: Object = { dataSource: data, value: 'nodeId', text: 'nodeText', child: 'nodeChild' };
  return (
    // specifies the tag for render the DropDownTree component
    <DropDownTreeComponent id="dropdowntree" fields={fields} />
  );
}
export default App;
ReactDOM.render(<App />, document.getElementById('sample'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React Dropdown Tree</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 for React Components" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-navigations/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-react-inputs/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/30.1.37/ej2-react-dropdowns/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>
    <style>
        #loader {
            color: #008cff;
            height: 40px;
            left: 45%;
            position: absolute;
            top: 45%;
            width: 30%;
        }
    </style>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='sample' style="margin: 20px auto 0; width:250px;">
        <div id='loader'>Loading....</div>
    </div>
</body>

</html>