What is the role and benefits of using Promise in asynchronous programming?

Promise in asynchronous programming is an object that represents the result of an asynchronous operation, which may succeed or fail in the future.

Advantages of using Promise:

• Allows writing asynchronous code that is easier to read and maintain, avoiding "callback hell".
• Provides chaining (.then(), .catch()) that simplifies handling sequential asynchronous operations.
• Makes error handling convenient through .catch().
• Can be used with async/await for even more readable syntax.

Example:

function fetchData() {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      const success = true;
      if (success) {
        resolve('Data received');
      } else {
        reject('Error');
      }
    }, 1000);
  });
}

fetchData()
  .then(result => console.log(result))
  .catch(error => console.error(error));