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When should I use try catch instead of then catch?

The question is simple, but I haven’t found the answer anywhere.

When should i use try catch? in the code below I use try catch to handle the return of a request:

JavaScript

Would it be a good practice to use then(…).catch(…)?

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Answer

The difference is in how you’re handing Promises.

If you’re using await to handle the Promise then you wrap it in a try/catch. Think of await as a way to make asynchronous operations semantically similar to synchronous operations.

But if you’re not using await and are instead handling the Promise by appending .then() to it then you’d append a .catch() to that chain to catch failures from within the asynchronous operation.

Because a try/catch isn’t going to catch an exception that happens from within the asynchronous operation if that operation isn’t awaited.

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