<!DOCTYPE html>
<html lang="en-US">
<body>
<h1>JS Swap Two Numbers</h1>
<script>
var num1 = 25;
var num2 = 50;
var temp = 0;
document.write("<br>Before Swap, num1 = " +num1+" num2 = "+num2);
temp = num1;
num1 = num2;
num2 = temp;
document.write("<br>After Swap, num1 = " +num1+" num2 = "+num2);
</script> </body>
</html>