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 start2. 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 again3. 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;
}
}
