var currentNumber = 0;
while (currentNumber <= 12)
{
alert(currentNumber);
currentNumber = currentNumber + 2;
}
0 2 4 6 8 10 12
for (var counter = 0; counter < 20; counter++)
{
if (counter > 15)
alert(counter + "**");
else if (counter > 10)
alert(counter + "*");
else
alert(counter);
}
0 1 2 3 4 5 6 7 8 9 10 11* 12* 13* 14* 15* 16** 17** 18** 19**