catch

A .catch() is really just a .then() without a slot for a callback function for the case when the promise is resolved. It is used to handle rejected promises.2

const promise1 = new Promise((resolve, reject) => {
  throw 'An error occured';
});

promise1.catch(function (error) {
  console.error(error);
});
// expected output: An error occured

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References

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/catch

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Backlinks

• Promises