🥊 Who wins when we have tasks waiting to be implemented in Job queue as well as in Callback queue.
Hmmmm.... let's see who wins with the piece of code below. 🔈
// setTimeout is a web API which waits for the time as given // in 2nd parameter and then moves the callback function in // call back queue setTimeout(() => console.log('1'), 0); setTimeout(() => console.log('2'), 10); // Promise is a class in JavaScript so the functionality is // native, to handle the functions executed we have a Job // queue Promise.resolve('hi').then((data) => console.log('3')) console.log('4'); If you execute this code the logs will be
4 3 1 2 This proves that JobQ has priority over callback queue if call stack is empty, Of course!.
Thoughts in comments
🦕 ⌨️
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