Try it Yourself: JavaScript Scope – Hyring Learn

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JavaScript Scope

<!DOCTYPE html>
<html>
<body>

<h2>Block Scope</h2>

<script>
{
  let message = "inside the block";
  console.log(message); // "inside the block"
}

// console.log(message); // ReferenceError: message is not defined

if (true) {
  const limit = 10;
  console.log(limit); // 10
}
// limit is not accessible here
</script>

</body>
</html>

<!DOCTYPE html>
<html>
<body>

<h2>Block Scope</h2>

<script>
{
  let message = "inside the block";
  console.log(message); // "inside the block"
}

// console.log(message); // ReferenceError: message is not defined

if (true) {
  const limit = 10;
  console.log(limit); // 10
}
// limit is not accessible here
</script>

</body>
</html>