JavaScript 算术运算符

JavaScript 算术运算符

<html>
   <body>
      <script>
         <!--
            var a = 33;
            var b = 10;
            var c = "Test";
            var linebreak = "<br />";
            document.write("a + b = ");
            result = a + b;
            document.write(result);
            document.write(linebreak);
            document.write("a - b = ");
            result = a - b;
            document.write(result);
            document.write(linebreak);
            document.write("a / b = ");
            result = a / b;
            document.write(result);
            document.write(linebreak);
            document.write("a % b = ");
            result = a % b;
            document.write(result);
            document.write(linebreak);
            document.write("a + b + c = ");
            result = a + b + c;
            document.write(result);
            document.write(linebreak);
            a = ++a;
            document.write("++a = ");
            result = ++a;
            document.write(result);
            document.write(linebreak);
            b = --b;
            document.write("--b = ");
            result = --b;
            document.write(result);
            document.write(linebreak);
         //-->
      </script>
      Set the variables to different values and then try...
   </body>
</html>