JS STRING CONSTRUCTOR EXAMPLE
Run 
<!doctype html>
	<head>
		<title>String Constructor Example</title>
	</head>
	<body>
		<script>
			/* define an array */
			let arr = [1,2,3];
			/* convert it into a string */
            document.write(String(arr) + "<br/>");
            document.write(typeof String(arr));
		</script>
	</body>
</html>