queueMicrotask and Ordering
Control execution order precisely.
Meet queueMicrotask
queueMicrotask is a direct way to schedule a microtask without creating a Promise. The callback runs after current synchronous code but before any macrotask.
It is the cleanest tool for deferring work to the very next microtask checkpoint.
Basic Usage
Pass a function to queueMicrotask. It runs after the synchronous code finishes.
console.log('start');
queueMicrotask(() => console.log('microtask'));
console.log('end');All lessons in this course
- The Call Stack
- Macrotasks and the Task Queue
- Microtasks and Promises
- queueMicrotask and Ordering