JavaScript frameworks are an essential part of modern front-end web development, providing developers with tried and tested tools for building scalable, interactive web applications. Many modern companies use frameworks as a standard part of their tooling... (more…)

To detect if the caps lock is on, use the getModifierState() method for the KeyboardEvent object: const capslockIsOn = event.getModifierState(modifier); The getModifierState() (...)... (more…)

The Art of Unit Testing, Third Edition</i> updates an international bestseller to reflect modern development tools and practices. This expanded edition teaches you to write unit tests for async and observable code, as well as methods of faking funct... (more…)

webpacker - Use Webpack to manage app-like JavaScript modules in Rails...

Managing asynchronous dependencies with JavaScript can be a nightmare. But there's a better way. It's called Fetch Injection. (more…)