<!DOCTYPE html>
<html>
<body>
<h2>Common JavaScript Mistakes</h2>
<p>It is a common mistake to forget that switch statements use strict comparison.</p>
<p>This will work:</p>
<p id="demo"></p>
<script>
let x = 10;
switch(x) {
case 10: document.getElementById("demo").innerHTML = "Hello";
}
</script>
</body>
</html>