How to pull out the expiration time from a JWT token?

Question

JSON Web Token

And what does a JWT token consist of? It is not clear specifically what exp and orig_iat are? I need to somehow pull out the expiration date from there and update the token. Decode the header and payload with the atob() function in the first line, then take exp in the second line and get the date new Date(exp)

Answer 1

Thanks, got it all figured out. Exp(expiration time) is exactly what I need. And orig_iat is the time the token was received.
Information taken from the official website: Click