<!DOCTYPE html>
<html lang="en-US">
<body>
<p>Check your console.</p>
<script>
function difference(a, b){
return Math.abs(a - b);
}
console.log(difference(-1, 5));
console.log(difference(125.5, -150));
console.log(difference(5, 10));
console.log(difference(10, 5));
</script> </body>
</html>