JS/PHP/RUBY Elegant switch for logical cases

Consider the following Javascript code example:

var x = 90;
if(x>100)
 alert("x > 100");
else if(x > 90)
 alert("x > 90");
else if(x > 80)
 alert("x > 80");
else if(x > 70)
 alert("x > 70");
else
 alert("x <= 70");

ugly isn't it?

Now consider the next example:

var x = 90
switch(true) {
 case x > 100:
 alert("x > 100");
 break;
 case x > 90:
 alert("x > 90");
 break;
 case x > 80:
 alert("x > 80");
 break;
 case x > 70:
 alert("x > 70");
 break;
 default:
 alert("x <= 70");
 break;
}

nicer?

Live example (Javascript):

http://jsfiddle.net/marcelow/ME9tD/

the same idea also works in other programming languages:

Ruby:

class NiceSwitchCase
 def doTheSwitch
 x = 90
 case true
 when x > 100
 puts "x > 100"
 when x > 90
 puts "x > 90"
 when x > 80
 puts "x > 80"
 else
 puts "x <= 80"
 end
 end
end

niceSwitchCase = NiceSwitchCase.new
niceSwitchCase.doTheSwitch

Live example:

http://runnable.com/me/UwJvTxExgQIsAABE

PHP:

$x = 90;
switch(true) {
 case $x > 100:
 echo "x > 100";
 break;
 case $x > 90:
 echo "x > 90";
 break;
 case $x > 80:
 echo "x > 80";
 break;
 case $x > 70:
 echo "x > 70";
 break;
 default:
 echo "x <= 70";
 break;
}

Live example:

http://runnable.com/me/UwJy7a-CsDIsAACI