Do you know what will be the output of this code? new Promise((resolve) => { console.log("A"); resolve(); }).then(() => console.log("B")); console.log("C");

Is the Promise constructor callback synchronous?

Do you know what will be the output of this code?

JavaScript

new Promise((resolve) => {
  console.log("A");
  resolve();
}).then(() => console.log("B"));

console.log("C");

Show answer and explanation

The answer is A C B.

The executor function runs right away, inside the constructor: A. .then callbacks always run later as microtasks, so C is logged before B.