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

Martin Bornman
PLUS
Martin Bornman
Courses Plus Student 12,662 Points
Posted by Martin Bornman
Martin Bornman
Courses Plus Student 12,662 Points

do while loop

What am I doing wrong?? var x = 0; do { console.log('I love JavaScript'); x += 1; } while ( x <= 10)

1 Answer

Gregor Cmiel
Gregor Cmiel
8,926 Points
Gregor Cmiel
Gregor Cmiel
8,926 Points

It seems like your code is unfinished.

Correct Answer

var x = 0;
do {
  console.log('I love JavaScript');
  x += 1; 
} while ( x <= 9)
 )

The code runs the first time in the do part. Then it adds +1 to the var x. You have to set the while condition to "x <= 9" because the code starts running at x = 0. Here is the number of console logs:

  • x = 0 -> 1. console log
  • x = 1 -> 2. console log
  • x = 2 -> 3. console log
  • x = 3 -> 4. console log
  • x = 4 -> 5. console log
  • x = 5 -> 6. console log
  • x = 6 -> 7. console log
  • x = 7 -> 8. console log
  • x = 8 -> 9. console log
  • x = 9 -> 10. console log

now the loop ends because 

...
while(10 <=9)
...

returns false.