Java Script Switch

Question

Please tell me how to write this code in switch format

<script>
var firstnum=prompt("Enter the first number");
var secondnum=prompt("Enter the second number");
if(firstnum>secondnum)
{
document.write("oh "+ firstnum + " is big then "+ secondnum );
}
else if(secondnum>firstnum)
{
document.write( "oh "+ secondnum + " is big then "+ firstnum);
}
else if (firstnum==secondnum)
{
document.write( "Sorry! Your Both Number are equal Try Another");
}
else
{
document.write("Error Please enter a valid number");
}

</script>

Answer 1

var x = first - second;
switch (Math.sign(x)) {
case 1:
...
break;
case - 1:
...
break;
case 0:
...
}

Answer 2

I think if else statement is best option here