Microtasks vs Macrotasks in JS

vertical YouTube Shorts / Instagram Reels video for software developers. Topic: "JavaScript

Event Loop, Microtasks vs Macrotasks" Hook: "Ever wondered why some JavaScript code runs before

others, even when inside setTimeout?" Explanation: "JavaScript runs on a single

thread but handles async tasks using the event loop. Microtasks like Promises run before

macrotasks like setTimeout, even if setTimeout is 0ms." Example:

console.log('Start'); setTimeout(() => console.log('Timeout'), 0); Promise.resolve().then(()

=> console.log('Promise')); console.log('End'); // Output: Start, End, Promise,

Timeout Analogy: "Think of microtasks as VIP tasks in a queue—they jump ahead of the