What is the purpose of the async keyword in JavaScript?
a) To define a function that always returns a promise
b) To execute synchronous code
c) To delay the execution of a function
d) To wait for an event to happen
Answer:
a) To define a function that always returns a promise
Explanation:
The async keyword is used to define an asynchronous function, which always returns a promise. When an async function is called, it returns a promise, and you can use await to wait for the promise to resolve.