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<html><body><h1>JavaScript Variables</h1><p>In this example, x, y, and z are undeclared variables.</p><p id="demo"></p><script>x = 5;y = 6;z = x + y;document.getElementById("demo").innerHTML ="The value of z is: " + z;</script></body><!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_variables_undeclared by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 17:06:48 GMT --></html>