React js UI example. NavBar Menu Dropdowns

React js UI example and template, NavBar Menu Dropdowns! . Take a look at this UI example and see how it can enhance your project. Your can copy or download the code and use it in your project. Don't forget to browse our library of other free React Native templates for even more design and functionality inspiration. Happy coding!
Tags: NavBar,Menu,Dropdowns,4.1.1

1. First, we need fresh reactjs setup, and for that, we need to run below commands into out terminal, and also we should have latest node version installed on our system:

npx create-react-app my-awesome-project

cd my-awesome-project

npm start

2. Now we need to run below commands into our project terminal to get bootstrap and related modules into our reactjs application:

npm install [email protected] --save

npm start //For start project again

3. Finally for the main output, we need to add below code into our my-awesome-project/src/App.js file or if you have fresh setup then you can replace my-awesome-project/src/App.js file code with below code:

import React from 'react';
import './App.css';
import 'bootstrap/dist/css/bootstrap.min.css';


function App() {
  
	return (
		<div>
			
<div class="navbar navbar-expand-md navbar-dark bg-dark mb-4" role="navigation">
    <a class="navbar-brand" href="#/">Bootstrap 4 NavBar</a>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarCollapse">
        <ul class="navbar-nav mr-auto">
            <li class="nav-item active">
                <a class="nav-link" href="#/">Home <span class="sr-only">(current)</span></a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="http://fontenele.github.io/bootstrap-navbar-dropdowns/" target="_blank">Github</a>
            </li>
            <li class="nav-item">
                <a class="nav-link disabled" href="#/">Disabled</a>
            </li>
            <li class="nav-item dropdown">
                <a class="nav-link dropdown-toggle" id="dropdown1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown1</a>
                <ul class="dropdown-menu" aria-labelledby="dropdown1">
                    <li class="dropdown-item" href="#/"><a>Action 1</a></li>
                    <li class="dropdown-item dropdown">
                        <a class="dropdown-toggle" id="dropdown1-1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown1.1</a>
                        <ul class="dropdown-menu" aria-labelledby="dropdown1-1">
                            <li class="dropdown-item" href="#/"><a>Action 1.1</a></li>
                            <li class="dropdown-item dropdown">
                                <a class="dropdown-toggle" id="dropdown1-1-1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown1.1.1</a>
                                <ul class="dropdown-menu" aria-labelledby="dropdown1-1-1">
                                    <li class="dropdown-item" href="#/"><a>Action 1.1.1</a></li>
                                </ul>
                            </li>
                        </ul>
                    </li>
                </ul>
            </li>
            <li class="nav-item dropdown">
                <a class="nav-link dropdown-toggle" id="dropdown2" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown2</a>
                <ul class="dropdown-menu" aria-labelledby="dropdown2">
                    <li class="dropdown-item" href="#/"><a>Action 2 A</a></li>
                    <li class="dropdown-item" href="#/"><a>Action 2 B</a></li>
                    <li class="dropdown-item" href="#/"><a>Action 2 C</a></li>
                    <li class="dropdown-item dropdown">
                        <a class="dropdown-toggle" id="dropdown2-1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown2.1</a>
                        <ul class="dropdown-menu" aria-labelledby="dropdown2-1">
                            <li class="dropdown-item" href="#/"><a>Action 2.1 A</a></li>
                            <li class="dropdown-item" href="#/"><a>Action 2.1 B</a></li>
                            <li class="dropdown-item" href="#/"><a>Action 2.1 C</a></li>
                            <li class="dropdown-item dropdown">
                                <a class="dropdown-toggle" id="dropdown2-1-1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown2.1.1</a>
                                <ul class="dropdown-menu" aria-labelledby="dropdown2-1-1">
                                    <li class="dropdown-item" href="#/"><a>Action 2.1.1 A</a></li>
                                    <li class="dropdown-item" href="#/"><a>Action 2.1.1 B</a></li>
                                    <li class="dropdown-item" href="#/"><a>Action 2.1.1 C</a></li>
                                </ul>
                            </li>
                            <li class="dropdown-item dropdown">
                                <a class="dropdown-toggle" id="dropdown2-1-2" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown2.1.2</a>
                                <ul class="dropdown-menu" aria-labelledby="dropdown2-1-2">
                                    <li class="dropdown-item" href="#/"><a>Action 2.1.2 A</a></li>
                                    <li class="dropdown-item" href="#/"><a>Action 2.1.2 B</a></li>
                                    <li class="dropdown-item" href="#/"><a>Action 2.1.2 C</a></li>
                                </ul>
                            </li>
                        </ul>
                    </li>
                </ul>
            </li>
        </ul>
        <form class="form-inline mt-2 mt-md-0">
            <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search"/>
            <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
        </form>
    </div>
</div>

<main role="main" class="container">
    <div class="jumbotron text-center">
        <h1>Bootstrap 4 NavBar</h1>
        <p class="lead text-info">NavBar with too many childs.</p>
    </div>
</main>
		</div>
	);
}
export default App;

4. Now we need to add below code into our my-awesome-project/src/App.css file :

.navbar .dropdown-toggle, .navbar .dropdown-menu a {
    cursor: pointer;
}

.navbar .dropdown-item.active, .navbar .dropdown-item:active {
    color: inherit;
    text-decoration: none;
    background-color: inherit;
}

.navbar .dropdown-item:focus, .navbar .dropdown-item:hover {
    color: #16181b;
    text-decoration: none;
    background-color: #f8f9fa;
}

@media (min-width: 767px) {
    .navbar .dropdown-toggle:not(.nav-link)::after {
        display: inline-block;
        width: 0;
        height: 0;
        margin-left: .5em;
        vertical-align: 0;
        border-bottom: .3em solid transparent;
        border-top: .3em solid transparent;
        border-left: .3em solid;
    }
}

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