Building a React Collapsible Sidebar from Scratch: A Comprehensive Guide

In the world of web development, user experience plays a pivotal role in the success of any application. One way to enhance user experience is by incorporating a collapsible sidebar into your React application. A collapsible sidebar not only adds a touch of elegance to your design but also provides a seamless navigation experience for users. In this blog post, we will explore the concept of a React collapsible sidebar and learn how to implement it in a few simple steps.

Understanding the React Sidebar

A sidebar is a vertical UI element that typically sits on the left or right side of a webpage. It contains navigation links, buttons, or other interactive elements that help users navigate the website or application. In React, a sidebar is created as a component, which can be reused across different application parts.

The React sidebar component can contain various elements, including menu items, dropdown menus, and icons. It can also be made responsive, meaning it adjusts its size and layout based on the screen size of the device it's being viewed on.

Importance of a Collapsible Sidebar

A collapsible sidebar, as the name suggests, is a sidebar that users can expand and collapse. This feature is especially useful for applications with complex navigation structures, as it allows users to hide the navigation menu when not in use, providing more space for the main content.

Moreover, a collapsible sidebar enhances the user experience by providing easy navigation, especially on smaller screens with limited space. It also adds interactivity to the application, making it more engaging for users.

Setting Up the React Project

Before diving into creating our collapsible sidebar, it's essential to set up our React project properly. This process involves creating a new React application and installing the necessary libraries.

#Creating a New React Application

To create a new React application, we will use the create-react-app command. This command sets up a new React project with a ready-to-use template.

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npx create-react-app react-collapsible-sidebar

After executing the above command, navigate into your new React project.

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cd react-collapsible-sidebar

Installing Required Libraries

Our React collapsible sidebar will require a few additional libraries for optimal functionality and aesthetics. Specifically, we'll be using Material UI for icons and the React Pro Sidebar library for creating the sidebar component.

Material UI

Material UI is a popular React UI framework that includes a large library of icons and a set of pre-designed components. To install Material UI into our React project, we use the npm install command.

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npm install @mui/material
npm install @mui/icons-material

By installing Material UI, we gain access to various icons that we can use in our sidebar menu. These icons will enhance the user experience by providing easy navigation through the menu items.

React Pro Sidebar

React Pro Sidebar is a responsive sidebar component library for React. It provides a set of customizable sidebar components that are easy to integrate into any React application. To install the React Pro Sidebar package, we use the npm install command.

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npm install react-pro-sidebar

With the React Pro Sidebar package installed, we can create a responsive sidebar with dropdown menus and submenu items. This will allow users to navigate through different sections of our application with ease.

Adding Icons with Material UI

Icons play a crucial role in enhancing the user experience of any application. They provide visual cues that help users navigate the application and understand its functionality more intuitively. In our case, we'll use icons to represent the different menu items in our sidebar.

Material UI, which we installed earlier, provides a vast library of pre-designed icons for our sidebar menu. These icons are part of the @mui/icons-material package. This package includes various icons, allowing us to choose the ones that best represent our menu items.

To use these icons, we first need to import them into our React application. Importing an icon from Material UI is straightforward. We must import the specific icon we want to use from the @mui/icons-material package.

Here's an example of how to import a few Material UI icons:

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import { Home, Folder, Message } from '@mui/icons-material';

In the above code, we've imported the Home, Folder, and Message icons. We can now use these icons in our sidebar menu.

To add an icon to a menu item, we pass the icon as a prop to the MenuItem component. For example, to add the Home icon to a menu item, we would do the following:

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<MenuItem icon={<Home />}>Home</MenuItem>

By adding icons to our menu items, we make our sidebar more intuitive and easier to navigate. Users can quickly identify the purpose of each menu item based on its icon, improving the overall user experience of our application.

Implementing React Router

React Router is a standard library for routing in React. It enables us to create multiple routes for our application and link different components to these routes.

Setting Up React Router Dom

React Router Dom is the DOM binding for React Router. To use it in our project, we must first install it using npm.

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npm install react-router-dom

After installing React Router Dom, we can import it into our application. We'll also import the BrowserRouter, Switch, and Route components, which are essential for setting up routing in our application.

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import { BrowserRouter as Router, Switch, Route } from 'react-router-dom';

Creating Navigation Component

Next, we'll create a navigation component. This component will contain the routes for our application. Each route will be linked to a different component, displayed when the user clicks on the corresponding menu item in the sidebar.

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import React from 'react';
import { BrowserRouter as Router, Switch, Route } from 'react-router-dom';
import Home from './components/Home';
import About from './components/About';
import Contact from './components/Contact';

function App() {
  return (
    <Router>
      <Switch>
        <Route exact path="/" component={Home} />
        <Route path="/about" component={About} />
        <Route path="/contact" component={Contact} />
      </Switch>
    </Router>
  );
}

export default App;

In the above code, we have three routes: Home, About, and Contact. Each route is linked to a different component. When a user clicks on a menu item in the sidebar, the corresponding component will be displayed.

Making the Sidebar Responsive

A responsive sidebar is crucial for providing a good user experience across various devices and screen sizes.

Using Responsive React Sidebar Library

The React Pro Sidebar library provides responsive sidebar components out of the box. When we created our sidebar component using this library, it was automatically made responsive. This means the sidebar will adjust its size and layout based on the screen size of the device it's being viewed on.

However, to ensure that the sidebar displays correctly on all devices, we might need to adjust our CSS. For example, we could use media queries to change the sidebar width on smaller screens.

Implementing Toggle Functionality

Toggle functionality allows users to collapse and expand the sidebar. This is especially useful on smaller screens, where screen real estate is limited.

To implement toggle functionality, we'll use the collapsed prop of the ProSidebar component. This prop accepts a boolean value that determines whether the sidebar is collapsed. We'll also create a state variable to keep track of the sidebar's collapsed state and a function to toggle this state.

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import React, { useState } from 'react';
import { Sidebar, Menu, MenuItem } from 'react-pro-sidebar';
import { Home } from '@mui/icons-material';

function App() {
  const [collapsed, setCollapsed] = useState(false);

  const handleToggleSidebar = () => {
    setCollapsed(!collapsed);
  };

  return (
    <Sidebar collapsed={collapsed}>
      <Menu>
        <MenuItem icon={<Home />}>Home</MenuItem>
        {/* More menu items... */}
      </Menu>
      <button onClick={handleToggleSidebar}>Toggle Sidebar</button>
    </Sidebar>
  );
}

export default App;

In the above code, we've added a button that calls the handleToggleSidebar function when clicked. This function toggles the collapsed state, causing the sidebar to collapse or expand.

Customizing the Sidebar

While the React Pro Sidebar library provides a great starting point, you might want to customize the sidebar better to match the look and feel of your application.

Customizing Sidebar Styles with CSS

CSS allows us to customize the appearance of our sidebar. We can change the colours, fonts, sizes, and more to match our application's design. To apply CSS to our sidebar, we'll create a CSS file and import it into our sidebar component.

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/* styles.css */

.sidebar {
  background-color: #333;
  color: #fff;
}

.sidebar .menu-item {
  font-size: 18px;
}

.sidebar .menu-item .icon {
  color: #f0f0f0;
}

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import React from 'react';
import { Sidebar, Menu, MenuItem } from 'react-pro-sidebar';
import { Home } from '@mui/icons-material';
import './styles.css';

function App() {
  return (
    <Sidebar>
      <Menu>
        <MenuItem icon={<Home />}>Home</MenuItem>
        {/* More menu items... */}
      </Menu>
    </Sidebar>
  );
}

export default App;

In the above code, we've created a CSS file named styles.css and imported it into our sidebar component. This CSS file contains styles that change the background color of the sidebar, the font size of the menu items, and the color of the icons.

Adding Customization Options

In addition to customizing the styles, we can add customization options to our sidebar. For example, we could allow users to choose between a light and dark theme, or to change the position of the sidebar from the left to the right side of the screen.

To add these customization options, we'll create state variables to store the user's preferences and update our sidebar and CSS to reflect these preferences.

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import React, { useState } from 'react';
import { Sidebar, Menu, MenuItem } from 'react-pro-sidebar';
import { Home, Brightness4, SwapHoriz } from '@mui/icons-material';
import './styles.css';

function App() {
  const [theme, setTheme] = useState('dark');
  const [position, setPosition] = useState('left');

  return (
    <Sidebar theme={theme} position={position}>
      <Menu>
        <MenuItem icon={<Home />}>Home</MenuItem>
        {/* More menu items... */}
      </Menu>
      <button onClick={() => setTheme(theme === 'dark' ? 'light' : 'dark')}>
        Toggle Theme <Brightness4 />
      </button>
      <button onClick={() => setPosition(position === 'left' ? 'right' : 'left')}>
        Toggle Position <SwapHoriz />
      </button>
    </Sidebar>
  );
}

export default App;

In the above code, we've added two buttons that allow the user to toggle the theme and position of the sidebar. When clicked, these buttons update the theme and position state variables, causing the sidebar to update its appearance. We've also added icons from the Material UI library to these buttons to make them more intuitive.

Conclusion

Creating a responsive and customizable sidebar in React can significantly enhance the user experience of your application. With the help of libraries like Material UI and React Pro Sidebar, we can easily create a sidebar with various features, including dropdown menus, icons, and toggle functionality.

In this tutorial, we walked through setting up a React project, installing necessary libraries, creating a sidebar component, and customizing it to fit our needs. We also discussed the importance of making the sidebar responsive and implementing toggle functionality for better usability on different devices.

Keep coding, and enjoy the process of creating amazing applications with React!