What Are Microtasks and Macrotasks?

What Are Microtasks and Macrotasks?

JavaScript uses different queues to manage asynchronous tasks.

Two important categories are:

• Microtasks
• Macrotasks

Microtasks

Examples include:

• Promise Callbacks
• queueMicrotask()

Microtasks receive higher priority.

Macrotasks

Examples include:

• setTimeout
• setInterval
• DOM Events

Macrotasks execute after microtasks have been completed.

Execution Order

JavaScript generally follows:

1. Execute Call Stack
2. Process Microtasks
3. Process Macrotasks

This behavior explains many interview questions involving promises and timers.

Why Is This Important?

Understanding task prioritization helps developers:

• Debug Async Code
• Understand Event Loop Behavior
• Predict Execution Order

Learn Async JavaScript Deeply

Topics such as Microtasks, Macrotasks, Event Loop, and Promises often confuse developers.

Namaste JavaScript provides detailed explanations and visual examples that help learners understand how asynchronous execution actually works.

The Bottom Line

Microtasks have higher priority than Macrotasks, and the Event Loop processes them differently to manage asynchronous execution efficiently.