To install Express Handlebars in a project, you can follow these steps:

1. Create a new project: Start by creating a new directory for your project and navigate into it in your terminal.

2. Initialize npm: Run the following command to initialize npm in your project: npm init -y

This will create a package.json file that will keep track of your project dependencies.

1. Install Express and Express Handlebars: Run the following command to install Express and Express Handlebars as dependencies for your project: npm install express express-handlebars

This will install the latest version of Express and Express Handlebars and add them to your package.json file.

1. Set up your Express application: Create a new app.js file (or any other name you prefer) in the root of your project directory. In this file, you will set up your Express application.

```javascript const express = require('express'); const exphbs = require('express-handlebars');

const app = express();

// Set up Express Handlebars as the view engine app.engine('handlebars', exphbs()); app.set('view engine', 'handlebars');

// Set up your routes and other middleware // ...

// Start the server const port = 3000; app.listen(port, () => { console.log(Server started on port ${port}); }); ```

The code above imports Express and Express Handlebars, sets up Express Handlebars as the view engine, and starts the server on port 3000. You can modify this code to fit your specific needs.

1. Create your views: Create a new directory called views in the root of your project directory. Inside the views directory, create your Handlebars template files with a .handlebars extension. For example, you could create a home.handlebars file:

```html

Welcome to my Express Handlebars app!

```

You can create as many view files as you need for your application.

1. Create your routes: In your app.js file, define your routes to render the appropriate views using Express Handlebars. For example:

javascript app.get('/', (req, res) => { res.render('home'); });

This code sets up a route for the root URL that renders the home.handlebars view.

And that's it! You have successfully installed and set up Express Handlebars in your Express project. You can now start building your application by creating more views and defining additional routes as needed.