How do Promise, async/await work in JavaScript, and how should errors be handled correctly?

You place an order at the counter and receive a vibrating ticket (Promise). You don't just stand there waiting — you go do other work. When the ticket vibrates: it either says "your order is ready!" (resolve) or "out of stock, sorry" (reject). await is just a way of saying "I will stand here waiting for this ticket to vibrate," but written in a concise, synchronous manner.