Function Parameters

<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Rest Parameter </h1>
<script>
function myFunction(...courses) {
  document.write("Current Course is : " + courses[0][3] + "<br>");
  document.write("Check Rest Parameter Type : " + typeof courses + "<br>");
  document.write("Check Rest Parameter Is array or no't : " + Array.isArray(courses));
}
myFunction(["HTML","CSS","PHP","JavaScript"]);
</script>

</body>
</html>