JavaScript Event Loop: Microtasks vs Macrotasks

First we log start, then set a timeout, then resolve a

promise, and finally log end. JavaScript runs on a single thread

but handles async tasks using the event loop. Microtasks like Promises always execute before

macrotasks like setTimeout, even if timeout is zero ms. Think of microtasks as VIP tasks

in a queue, they jump ahead of the regular line. Understanding the event

loop helps you write predictable async JS and avoid tricky bugs!