Try it Yourself: JavaScript Async – Hyring Learn

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JavaScript Async

<!DOCTYPE html>
<html>
<body>

<h2>A Simple Callback</h2>

<script>
function processUser(name, callback) {
  const greeting = "Hello, " + name;
  callback(greeting);
}

processUser("Ada", function (message) {
  console.log(message); // "Hello, Ada"
});
</script>

</body>
</html>

<!DOCTYPE html>
<html>
<body>

<h2>A Simple Callback</h2>

<script>
function processUser(name, callback) {
  const greeting = "Hello, " + name;
  callback(greeting);
}

processUser("Ada", function (message) {
  console.log(message); // "Hello, Ada"
});
</script>

</body>
</html>