Promises

Question 1

asynchronous operation

Answer 1

is one that allows the computer to “move on” to other tasks while waiting for the asynchronous operation to complete. Asynchronous programming means that time-consuming operations don’t have to bring everything else in our programs to a halt.

Question 2

How does JS handle asynchronous operation?

Answer 2

JavaScript handles asynchronicity using the Promise object, introduced with ES6