Elliot Yang 的动态

The queueMicrotask() method, which is exposed on the Window or Worker interface, queues a microtask to be executed at a safe time prior to control returning to the browser's event loop.
First, nextTick queue is checked to get tasks for its execution, once it is exhausted, the microTasks queue is checked. After finishing the tasks in the microtask queue the process of checking nextTick and microTasks queues are repeated until the queues have been emptied.
They have different queues. The nextTick's queue is managed by node and the microtask one is managed by v8.
The nextTick queue is checked first after the current function/script execution, and then the microTask one.