Make sure you can answer all of these questions from the previous lessons prior to taking on the projects.

Introduction to Express

• What is Express?
• What sets Express apart from other frameworks?

Hello Express

• How do you install Express?
• What function do you call to create a new Express application?
• How would you handle a "GET" request to "/friends"?
• What two arguments does a route handler accept?
• How do you access route parameters in the route handler?

Templates

• What are the benefits of using a template engine over string concatenation?
• How do you interpolate JavaScript with Handlebars?
• How do you set up your Express application to use Handlebars?
• What function do you call to send back your template as a response?
• How do you pass properties to the template?

Middleware

• What are the differences between a route handler and a middleware function?
• How do you add middleware to your Express application?
• What did you likely forget in your middleware function if your browser starts to hang?

Deploying with Heroku

• How do you create a new Heroku project?
• What command updates a project with the latest changes?