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JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops `do ... while` Loops

Kieran Corcoran
Kieran Corcoran
11,188 Points
Posted by Kieran Corcoran
Kieran Corcoran
11,188 Points

(! correctGuess)

Hi,

I am really struggling to understand the concept of the while loop condition (! correctGuess)

In the video Dave explains that the ‘NOT’ operator turns true to false, and false to true which I understand. However, the variable correctGuess is set to false at the start of the programme so I take this to mean it should be changed to true in the while condition. Meaning the code should not loop, as the condition have changed from false to true using the ‘NOT’ operator.

Would anyone be able to explain this to me?

Many thanks

1 Answer

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

It only changes to true when the number has been guessed. Until then it stays false, which means that "!correctGuess" is true, which means the loop keeps running.

Kieran Corcoran
Kieran Corcoran
11,188 Points
Kieran Corcoran
Kieran Corcoran
11,188 Points

Steven, thank you. I have been over complicating this in my head for ages. Your simple explanation has just given me a light bulb moment.

Thanks Kieran