Javascript2
<script> var a , b ; a = 10 ; b = 20 ; document . writeln ( "Add:" +( a + b )) ; document . writeln ( "<br>Sub:" +( a - b )) ; document . writeln ( "<br>Mul:" +( a * b )) ; document . writeln ( "<br>Div:" +( a / b )) ; document . writeln ( "<br>Module:" +( a % b )) ; document . writeln ( "<br>Incre:" +(++ a )) ; document . writeln ( "<br>Decr:" +(-- b )) ; document . writeln ( "<br>==:" +( a == b )) ; //false document . writeln ( "<br>>:" +( a > b )) ; //false document . writeln ( "<br>>=:" +( a >= b )) ; //false document . writeln ( "<br><:" +( a < b )) ; //true document . writeln ( "<br><=:" +( a <= b )) ; //true document . writeln ( "<br>!=:" +( a != b )) ; //true //&& || ! ...