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JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops Review while loops, do...while loops, and Loop Conditions

Roger Hwang
Roger Hwang
3,851 Points

do while loop question

do { console.log('Hello'); } while (false) console.log('Goodbye');

How does this statement print out 'Goodbye'? Where in the code does it value to false?

1 Answer

Steven Parker
Steven Parker
229,982 Points

The loop starts with "do" and ends with "while". It's a "do...while" loop, not an ordinary "while" loop.

So the part the prints out "Goodbye" comes after and outside the loop, and will always be done.

Roger Hwang
Roger Hwang
3,851 Points

Ah I get it! "console.log('Goodbye');" is not in curly braces in which I was picturing that's how it was set up to be which would then be dependent on the while loop. Further, do while loops syntax should just ends in "while()". Definitely a tricky one considering do while's aren't used as much.