Why does this runs loop one more time?

Question

I'm running this code:

var number = 0;
while (number <= 11) {
  console.log(number);
  number += 2;
}

But the output goes to 12. I've tried same with for loop the output was okay, till 10.

It tried it another way by replacing console.log with console.warn in while loop. The output warns till 10 but logs 12.

Further, by replacing console with alert, I got output till 10 in alert but still I see 12 in console.

It should be noted that if you click the "run code snippet" button of your own post, it doesn't write 12. — Observer, Mar 16 '16 at 18:51

score 1 · Accepted Answer · answered Mar 16 '16 at 18:49

Console.log is not running one more time. In the console, it is just reporting the final value of number.

To prove this, simply prepend some text in console.log and you'll see.

var number = 0; 
while(number <= 11){   
    console.log("the output " + number);   
    number += 2; 
}

1 Answers1