AI solution for Interview Question on BFE.dev
6. Explain the concept of Promise to a 5-year-old

Hey kiddo! Do you know when you promise to do something, and then you actually do it? That's really awesome, right?

Well, computers can also make promises, but they call it a Promise object. It's like when you tell your friend that you will share your candy with them, but they have to wait until you finish your homework. The Promise object is like that - it promises to do something, but it might take some time.

When we tell the computer to do something, it might take some time to finish. For example, we might ask the computer to get us some information from a website. But because the internet is slow sometimes, the computer might take some time to get that information.

Instead of waiting for the computer to finish, we can use a Promise. It's like asking the computer, "Hey, can you do this task for me? Promise me that you will do it, and then let me know when you finish." Once the computer finishes the task, it will either resolve (which is like telling you that it's done), or reject (which means something went wrong).

So, a Promise object is like a promise from the computer to do something, and then it tells us when it's done. It helps us run our programs more efficiently and catch errors if something goes wrong. Cool, right?