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JavaScript JavaScript Arrays Loop Through Arrays Loop Through an Array

Posted by Ryan Wikle
Ryan Wikle
5,774 Points

I am getting an error that says “undefined is not an object”. Which part of the code is that referring to?

script.js 
const temperatures = [100, 90, 99, 80, 70, 65, 30, 10];

for( let i = 0 ; i> temperatures.length; i++) {
 console.log(temperatures[i]);
}

3 Answers

Bert Witzel
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Bert Witzel
Full Stack JavaScript Techdegree Graduate 27,918 Points
Bert Witzel
.a{fill-rule:evenodd;}techdegree seal-36
Bert Witzel
Full Stack JavaScript Techdegree Graduate 27,918 Points

Sometimes these quizzes aren't the best at identifying what the problem is, in your case you have i > temperatures.length when it should be i < temperatures.length:

const temperatures = [100, 90, 99, 80, 70, 65, 30, 10];

for (let i = 0; i < temperatures.length; i++) {
  console.log(temperatures[i]);
}
Ryan Wikle
Ryan Wikle
5,774 Points
Ryan Wikle
Ryan Wikle
5,774 Points

Thank you for catching that. However I am still getting the same error message.

Bert Witzel
.a{fill-rule:evenodd;}techdegree seal-36
Bert Witzel
Full Stack JavaScript Techdegree Graduate 27,918 Points

Hmm, I just posted it in the challenge again and I passed it okay. Make sure to not paste const temperatures again if you are copying and pasting the code above, that's the only thing I can think might be the problem.

Ryan Wikle
Ryan Wikle
5,774 Points
Ryan Wikle
Ryan Wikle
5,774 Points

My code worked when I tested it outside of the challenge. And it was finally accepted after I refreshed the page and restarted the challenge. I think I was having an issue with the tree-house site not my actual coding.