Adding a module to Breach means finding its GitHub repository and entering its owner and repository name in the module manager. A Breach module is a separate web application that adds part of the browser’s interface or behavior, and Breach…
An Express app can tailor small presentation choices to whether a request came from a phone or a desktop. Device detection reads the User-Agent header the browser sends and turns it into a device type like desktop or smartphone. This…
An Express app can use a visitor’s IP address for jobs like rate limits or an approximate location lookup. Express gives you that address as req.ip, though behind a proxy it needs one setting to report the visitor instead of…
Visitors to your Express app need an HTML page back, either a saved file or one built for that request. Express sends a finished file with res.sendFile() and builds a page from a template with res.render(). Here I’ll send a…
An Express API sends data back to the client as text, and JSON (JavaScript Object Notation) is the format the client can turn back into values. The res.json() method converts a JavaScript value to JSON and sends it with the…
Before real users rely on your Express backend, it needs more than routes that return the right response. A production checklist covers what happens around those routes, such as limiting incoming requests and keeping sessions alive when the server process…
Having built a web app with Express, you can turn it into a desktop app that opens in its own window. Electron supplies that window and runs your Express server inside the app, so nobody has to start a separate…
A weather app takes a city name from the user, fetches the current conditions from a weather service and shows them on a page. In this project, an Express server asks Weatherstack’s API for the weather and returns the finished…
A status box, like the one on Facebook, lets a user type an update and see it appear in a feed. This project builds one with Express handling the requests and MySQL saving each status so it’s still there after…
A route can need the same check on every request, such as making sure a required header is present. In Express, middleware is a function that runs before the route handler and either sends a response or passes the request…
