<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JavaScript strict mode with function</title>
</head>
<body>
<script type="text/javascript">
// Press F12 - View Syntax error on Console Panel
"use strict";
var val = 4, radius, root, power;
with (Math) {
radius = PI * val * val;
root = sqrt(val);
power = pow(val, 3);
}
document.writeln("Radius: " + radius);
document.writeln("Square root: " + root);
document.writeln("Power: " + power);
</script>
</body>
</html>
