While loop issue

[ricky11]

When i run the following while loop in run js, the results are little odd, could be my programming.

var counter = 1;

while(counter <= 10){
    console.log(counter);
    counter = counter + 1;
}

result in 1 2 11 3 4 5 6 7 8 9 10

but it should result in :

1 2 3 4 5 6 7 8 9 10