JavaScript Asynchronous Programming with JavaScript Understanding Promises Reject a Promise and Handle Errors

Bernardo Hauer Santos
Bernardo Hauer Santos
7,349 Points

Why use catch() rather than passing a second function to then()?

Is there a technical reason as to why we use catch rather than just passing a second function to then()?

Or is this simply done to make the code more readable?

Justin White
Justin White
8,752 Points

catch is used to catch errors. if for some reason fetch has an error, or one of the functions in the .then() has an error. Catch will be called and do whatever you tell it to do when there is an error.