AI solution for JavaScript Quiz on BFE.dev
98. Promise executor IV

The code will output 2 by console.log.

Explanation:

• A new Promise is created with a callback that takes resolve and reject as parameters.
• Inside the callback, a new Promise called promise2 is created by calling Promise.reject('error'). This means that promise2 is immediately rejected with the value 'error'.
• promise2 has a .then() method attached to it. This method takes two callbacks: the first one (() => console.log(1)) will be called if promise2 is resolved, and the second one (() => console.log(2)) will be called if promise2 is rejected. In this case, the second callback will be called because promise2 is rejected.
• Finally, resolve(promise2) is called, which means that the outer Promise is resolved with the rejected promise2 as its value.
• promise.then(console.log) is then called, which means that the function passed to the .then() method will receive the value of the resolved Promise as its argument. In this case, the value is the rejected promise2, so the inner callback (() => console.log(2)) will be called and output 2.