We’ve all experienced a frozen web page followed by endless refreshing, frustrated sighs, and the occasional foot stomp, only to keep seeing the spinning wheel. In many cases, this is caused by a bottleneck in JavaScript’s main thread.
The main thread is a single-lane highway where the browser processes everything in a strict sequence. It handles clicks, manages scrolling, renders animations, and executes your logic. Because it can only do one thing at a time, adding heavy computations to the mix creates a massive traffic jam. When the…
