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並前往https://lucymarmitchell.medium.com/using-then-catch-finally-to-handle-errors-in-javascript-promises-6de92bce3afc

Using .then(), .catch(), .finally() to Handle Errors in Javascript ...

then() method with Promises. .then takes a callback function and returns another Promise (!) and you can do nifty things like console.log out the returned value ...

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