How To Create Mega Menu Using PrimeReact/Primefaces In ReactJS

Introduction

The PRIMEREACT UI framework has Over 80 React UI Components with top-notch quality to help you implement all your UI requirements in style.

MegaMenu is a navigation component that displays submenus together.

Preconditions

Javascript
Basic knowledge of React js
Node.js
V.S. Code,Visual Studio

We cover the below things in this article:

Create React application
Installation of Primeface
How to Apply MegaMenu of Primefaces in React js

Step 1

Run the below command for creating React.js project

npx create-react-app prime-app
cd prime-app
npm start

Step 2

Run the below command for installing PrimeReact

npm install primereact primeicons

Create the files according to the below image

Step 3

Add the below code in the App.js

import React from 'react';
import { MegaMenu } from 'primereact/megamenu';

function App() {
    const items = [
        {
            label: 'Videos', icon: 'pi pi-fw pi-video',
            items: [
                [
                    {
                        label: 'Video 1',
                        items: [{ label: 'Video 1.1' }, { label: 'Video 1.2' }]
                    },
                    {
                        label: 'Video 2',
                        items: [{ label: 'Video 2.1' }, { label: 'Video 2.2' }]
                    }
                ],
                [
                    {
                        label: 'Video 3',
                        items: [{ label: 'Video 3.1' }, { label: 'Video 3.2' }]
                    },
                    {
                        label: 'Video 4',
                        items: [{ label: 'Video 4.1' }, { label: 'Video 4.2' }]
                    }
                ]
            ]
        },
        {
            label: 'Users', icon: 'pi pi-fw pi-users',
            items: [
                [
                    {
                        label: 'User 1',
                        items: [{ label: 'User 1.1' }, { label: 'User 1.2' }]
                    },
                    {
                        label: 'User 2',
                        items: [{ label: 'User 2.1' }, { label: 'User 2.2' }]
                    },
                ],
                [
                    {
                        label: 'User 3',
                        items: [{ label: 'User 3.1' }, { label: 'User 3.2' }]
                    },
                    {
                        label: 'User 4',
                        items: [{ label: 'User 4.1' }, { label: 'User 4.2' }]
                    }
                ],
                [
                    {
                        label: 'User 5',
                        items: [{ label: 'User 5.1' }, { label: 'User 5.2' }]
                    },
                    {
                        label: 'User 6',
                        items: [{ label: 'User 6.1' }, { label: 'User 6.2' }]
                    }
                ]
            ]
        },
        {
            label: 'Events', icon: 'pi pi-fw pi-calendar',
            items: [
                [
                    {
                        label: 'Event 1',
                        items: [{ label: 'Event 1.1' }, { label: 'Event 1.2' }]
                    },
                    {
                        label: 'Event 2',
                        items: [{ label: 'Event 2.1' }, { label: 'Event 2.2' }]
                    }
                ],
                [
                    {
                        label: 'Event 3',
                        items: [{ label: 'Event 3.1' }, { label: 'Event 3.2' }]
                    },
                    {
                        label: 'Event 4',
                        items: [{ label: 'Event 4.1' }, { label: 'Event 4.2' }]
                    }
                ]
            ]
        },
        {
            label: 'Settings', icon: 'pi pi-fw pi-cog',
            items: [
                [
                    {
                        label: 'Setting 1',
                        items: [{ label: 'Setting 1.1' }, { label: 'Setting 1.2' }]
                    },
                    {
                        label: 'Setting 2',
                        items: [{ label: 'Setting 2.1' }, { label: 'Setting 2.2' }]
                    },
                    {
                        label: 'Setting 3',
                        items: [{ label: 'Setting 3.1' }, { label: 'Setting 3.2' }]
                    }
                ],
                [
                    {
                        label: 'Technology 4',
                        items: [{ label: 'Setting 4.1' }, { label: 'Setting 4.2' }]
                    }
                ]
            ]
        }
    ];

    return (
        <div>
            <div className="card">
                <h5>Horizontal</h5>
                <MegaMenu model={items} />

                <h5>Vertical</h5>
                <MegaMenu model={items} orientation="vertical" />
            </div>
        </div>
    );
}
export default App;

Step 4

Add the below code in index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <meta name="theme-color" content="#000000" />
    <meta
      name="description"
      content="Web site created using create-react-app"
    />
    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />

 <!-- PrimeReact -->
 <link rel="stylesheet" href="https://unpkg.com/primeicons/primeicons.css" />
 <link rel="stylesheet" href="https://unpkg.com/primereact/resources/themes/lara-light-indigo/theme.css" />
 <link rel="stylesheet" href="https://unpkg.com/primereact/resources/primereact.min.css" />
 <link rel="stylesheet" href="https://unpkg.com/[email protected]/primeflex.min.css" />

 <!-- Dependencies -->
 <script src="https://unpkg.com/react/umd/react.production.min.js"></script>
 <script src="https://unpkg.com/react-dom/umd/react-dom.production.min.js"></script>
 <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
 <script src="https://unpkg.com/[email protected]/dist/react-transition-group.js"></script>

 <!-- Demo -->
 <script src="https://unpkg.com/primereact/core/core.min.js"></script>
 <script src="https://unpkg.com/primereact/megamenu/megamenu.min.js"></script>

    <!--
      manifest.json provides metadata used when your web app is installed on a
      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
    -->
    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
    
    <!--
      Notice the use of %PUBLIC_URL% in the tags above.
      It will be replaced with the URL of the `public` folder during the build.
      Only files inside the `public` folder can be referenced from the HTML.

      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
      work correctly both with client-side routing and a non-root public URL.
      Learn how to configure a non-root public URL by running `npm run build`.
    -->
    <title>React App</title>
  </head>
  <body>
    <noscript>You need to enable JavaScript to run this app.</noscript>
    <div id="root"></div>
    <!--
      This HTML file is a template.
      If you open it directly in the browser, you will see an empty page.

      You can add webfonts, meta tags, or analytics to this file.
      The build step will place the bundled scripts into the <body> tag.

      To begin the development, run `npm start` or `yarn start`.
      To create a production bundle, use `npm run build` or `yarn build`.
    -->
  </body>
</html>

Step 5

Add the below code in App.css

.App {
  text-align: center;
}

.App-logo {
  height: 40vmin;
  pointer-events: none;
}

@media (prefers-reduced-motion: no-preference) {
  .App-logo {
    animation: App-logo-spin infinite 20s linear;
  }
}

.App-header {
  background-color: #282c34;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: calc(10px + 2vmin);
  color: white;
}

.App-link {
  color: #61dafb;
}

@keyframes App-logo-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

Step 6

Add the below code in the CountryService.js

import data from './contires.json';
export class CountryService {
    getCountries() {
        const result = [];
        data.map((datas) => {
            result.push(datas)
        });
        return result;
    }

Step 7

Add the following code in package.json,

{
  "name": "prime-demo",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@testing-library/jest-dom": "^5.16.4",
    "@testing-library/react": "^13.3.0",
    "@testing-library/user-event": "^13.5.0",
    "primeicons": "^5.0.0",
    "primereact": "^8.1.1",
    "react": "^18.1.0",
    "react-dom": "^18.1.0",
    "react-redux": "^8.0.2",
    "react-scripts": "^2.1.3",
    "redux": "^4.2.0",
    "web-vitals": "^2.1.4"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": [
      "react-app",
      "react-app/jest"
    ]
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  }
}

Step 8

Run the following commands

npm i
npm start

Step 9

Summary

In this article, we learned how to create react project, set PrimeReact UI, and add mega menu UI widgets.