AI solution for JavaScript Quiz on BFE.dev
47. Promise Order II

The output by console.log will be:

1
4
6
13
8
9
11
10
12
Uncaught 5
2
3

Explanation:

• console.log(1) outputs 1.
• console.log(4) outputs 4.
• reject(5) rejects the Promise with a value of 5.
• console.log(6) outputs 6.
• .catch(() => console.log(8)) catches the rejection of the Promise and outputs 8.
• .then(() => console.log(9)) executes after the Promise is rejected and outputs 9.
• .then(() => console.log(11)) executes after the previous .then() and outputs 11.
• .catch(() => console.log(10)) catches the rejection of the previous .then() and outputs 10.
• .then(() => console.log(11)) executes after the previous .catch() and outputs 11.
• .then(console.log) executes after the previous .then() and outputs undefined (the value returned by console.log()).
• .finally(() => console.log(12)) executes after all other Promise-related code and outputs 12.
• console.log(13) outputs 13.
• setTimeout(() => { console.log(2) }, 10) outputs 2 after a delay of 10 milliseconds.
• setTimeout(() => { console.log(3) }, 0); queues the callback to output 3, but it is executed after all other code, including the Promise-related code, so it outputs 3 after everything else is done.
• Uncaught 5 is not output by console.log(), but is an Uncaught Promise rejection with a value of 5.