Serving from multiple directories in Express - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of serving static files from multiple directories in Express?

It allows your web server to deliver files like images, CSS, and JavaScript from different folders, making it easier to organize and manage resources.

beginner

How do you serve static files from multiple directories in Express?

You use multiple calls to express.static middleware, each pointing to a different folder, and add them to your app with app.use().

intermediate

What happens if two static directories contain files with the same name?

Express serves the file from the first directory that matches the request path, ignoring the others for that file name.

beginner

Show a simple example code snippet to serve static files from 'public' and 'assets' folders in Express.

app.use(express.static('public')); app.use(express.static('assets'));

beginner

Why is it important to serve static files efficiently in a web app?

Serving static files efficiently improves page load speed and user experience by quickly delivering images, styles, and scripts without extra processing.

Which Express method is used to serve static files from a directory?

A app.get()

B express.static()

C app.listen()

D express.use()

express.static() is the middleware function used to serve static files.

How do you add multiple static directories in Express?

A Use app.static() instead of express.static()

B Pass an array of directories to one express.static() call

C Serve only one directory at a time

D Call app.use() multiple times with express.static() for each directory

You add multiple static directories by calling app.use() multiple times with express.static() for each folder.

If two static directories have a file named 'logo.png', which one will Express serve?

A Both files at the same time

B The file from the directory added last with app.use()

C The file from the directory added first with app.use()

D Express will throw an error

Express serves the first matching file it finds based on the order of app.use() calls.

What is a benefit of organizing static files into multiple directories?

A Better organization and easier maintenance

B Slower server response

C More complex code with no benefits

D It disables caching

Using multiple directories helps keep files organized and easier to manage.

Which of these is NOT a static file typically served by Express?

A Database queries

B HTML files

C JavaScript files

D CSS files

Database queries are dynamic operations, not static files.

Explain how to serve static files from two different folders in Express and what happens if files have the same name.

Think about middleware order and file lookup.

Describe why serving static files efficiently matters in a web application and how multiple directories can help.

Consider user experience and code organization.