sponsor The Ultimate Guide to Building a UI Library for Your Company—Part 3: Building Robust Components In this ongoing series, TJ VanToll continues to share tips and tricks he’s learned from over a decade of writing and working with UI components for … more Read More
Safari Technology Preview Release 124 is now available for download for macOS Big Sur and macOS Catalina. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release … more Read More
What happens when you add an event listener to an event target while an event is in the process of being dispatched? Let’s find out together! … more Read More
Building on our knowledge of the event loop we will see how the execution timings of microtasks queued in event listeners can be different depending on how an event is dispatched. … more Read More
This lesson presses into the deep inner workings of the event loop in order to understand how events fit into the overall javascript execution lifecycle. … more Read More
This lesson will explore what problem passive event listeners are trying to solve, and how you can mark your event listeners as passive to improve scrolling performance. It also covers how some browsers automatically set `touchstart`, `touchmove`, `wheel` … more Read More
Event listeners are provided with an `event` object that represents an actively dispatched event. An `event` object contains lots of information and functionality related to an event. We will look at the various event properties, constants and methods … more Read More
Sometimes you need to use `addEventListener` to listener to particular events as there are no corresponding HTML attribute or object property event handlers for the event. … more Read More
