Automated tests are essential to the apps we write since modern apps have so many moving parts. In this piece, we’ll look at how to write apps to test an Express app that interacts with a database with Jest and SuperTest. Creating the App We’ll Test We create a project folder by creating an empty […]
Adding Tests to Express Apps with Jest and Supertest Read More »
When we use an Express app for production, i.e. it’s used by external users, we have to be careful about security since it’s available to the outside world. In this article, we’ll look at some security best practices when running Express apps in a production environment. Don’t Use Outdated Versions of Express Outdated versions of
Security Best Practices for Using Express Apps in Production Read More »
By default, Express 4.x or later doesn’t come with anything to parse request bodies. Therefore, we need to add something to do this. In this article, we’ll look at how to use the body-parser middleware to do this with text and URL-encoded request bodies. Parsing Text Bodies We can parse text request bodies with the
Use body-parser Express Middleware to Parse Text and URL-Encoded Requests Read More »
The Expressrouter object is a collection of middlewares and routes. It a mini-app within the main app. It can only perform middleware and routing functions and can’t stand on its own. It also behaves like middleware itself, so we can use it with app.use or as an argument to another route’s use method. In this
Guide to the Express Router Object — Request and Parameter Handling Read More »
The core part of an Express app is the Application object. It’s the application itself. In this article, we’ll look at the methods of the app object and what we can do with it, including using app.use to set middleware. app.use([path,] callback [, callback…]) We can use the app.use method to mount middleware that’s run
Guide to the Express Application Object — Middleware Read More »
By default, Express 4.x or later doesn’t come with anything to parse request bodies. Therefore, we need to add a library to handle this. body-parser is a middleware that we can use to parse various kinds of request bodies. It throws several kinds of errors that we need to manage. In this article, we’ll look
List of Express body-parser Errors Read More »
The Expressrouter object is a collection of middlewares and routes. It a mini-app within the main app. It can only perform middleware and routing functions and can’t stand on its own. It also behaves like middleware itself, so we can use it with app.use or as an argument to another route’s use method. In this
Guide to the Express Router Object — Multiple Requests and Middleware Read More »
The core part of an Express app is the Application object. It’s the application itself. In this article, we’ll look at the methods of the app object and what we can do with it, including rendering HTML and changing settings. app.render(view, [locals], callback) We can use the app.render method to render HTML of a view
Guide to the Express Application Object — Rendering and Setting Read More »
The core part of an Express app is the Application object. It’s the application itself. In this piece, we’ll look at the methods of the app object and what we can do with it. app.METHOD(path, callback [, callback …]) This method routes an HTTP request. METHOD is a placeholder for various routing methods that Express
Guide to the Express Application Object — Routing Read More »
By default, Express 4.x or later doesn’t come with anything to parse request bodies. Therefore, we need to add something to do this. In this article, we’ll look at how to use the body-parser middleware to do this with JSON and raw bodies. Adding the Body-Parser Package body-parser is a Node package that we can
Use body-parser Express Middleware to Parse JSON and Raw Requests Read More »
