then

The .then() method takes up to two arguments; the first argument is a callback function for the resolved case of the promise, and the second argument is a callback function for the rejected case. Each .then() returns a newly generated promise object, which can optionally be used for chaining.1

const promise1 = new Promise(function (resolve, reject) {
  resolve('Success!');
});

promise1.then(function (value) {
  console.log(value);
  // expected output: "Success!"
});

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References

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

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Backlinks

• Promises