Try it Yourself: JavaScript Async – Hyring Learn

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JavaScript Async

<!DOCTYPE html>
<html>
<body>

<h2>Creating a Promise</h2>

<script>
const task = new Promise((resolve, reject) => {
  const ok = true;
  if (ok) {
    resolve("Task done");
  } else {
    reject(new Error("Task failed"));
  }
});

task
  .then((result) => console.log(result))   // "Task done"
  .catch((error) => console.log(error.message));
</script>

</body>
</html>

<!DOCTYPE html>
<html>
<body>

<h2>Creating a Promise</h2>

<script>
const task = new Promise((resolve, reject) => {
  const ok = true;
  if (ok) {
    resolve("Task done");
  } else {
    reject(new Error("Task failed"));
  }
});

task
  .then((result) => console.log(result))   // "Task done"
  .catch((error) => console.log(error.message));
</script>

</body>
</html>