console.log("Hello from the demo");

   for(var i=1;i<9;i++) {
      console.log("I is ", i);
      if (i%2 == 0) {
         console.log(i, "is even");
      }
      switch(i) {
         case 1: console.log("one"); break;
         case 2: console.log("two"); break;
         case 3: console.log("three"); break;
         case 4: console.log("four"); break;
         case 5:
         case 6: console.log("five or six"); break;
         default:
             console.log("too high");
      }

   }
   i = 3;
   while (i < 5) {
      console.log("in while i=",i);
      i+=1;
   }

   i = 10;
   do {
      console.log("in do while i=",--i);
   } while (i > 5);