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JavaScript

Posted by Gabriel Rojas
Gabriel Rojas
1,380 Points

I can't understand why this piece of Javascript code isn't working

I have created this piece of code for a project:

for (let current = 1; current % 7 == 0; current = current + 1) {
 console.log(current);
}

I want console.log to display all numbers starting from 0, until it reaches a number that its remainder when divided by seven is zero (obviously that number will be seven)...

Why console.log is not showing the numbers 1, 2, 3, 4, etc...? What I'm doing wrong?

Thanks

2 Answers

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,974 Points

In the first example only 1 to 6 are logged. When current = 7 the condition 0 > 0 is false and the loop stops.

Gabriel Rojas
Gabriel Rojas
1,380 Points

Thank you very much Kris...now I understand

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,974 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,974 Points

I got the following to work

for (let current = 1; current % 7 > 0; current = current + 1) {
 console.log(current);
}

I think your condition to run is false so it never runs. It would be like 

for (let current = 1; current ==100; current = current + 1) {
 console.log(current);
}

which also doesn't run but this does:

for (let current = 1; current ==1; current = current + 1) {
 console.log(current);
}
Gabriel Rojas
Gabriel Rojas
1,380 Points

Thank you for your answer, but what I still can't understand from your first example is why the remainder of 7 divided by seven, which is zero, should be greater than zero? Zero can't be greater than zero, so why Javascript evaluates this condition as true?