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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Iterating through an Array

Posted by Joshua Harman
Joshua Harman
8,821 Points

Communication Problem for this test specifically.....

So I keep receiving a communication error every time I go to input the answer for this test.. I'm not sure why, but I figured I'd say something.

Thanks for the hard work. This is an amazing course.

script.js 
var temperatures = [100,90,99,80,70,65,30,10];
for(var i=0; i<temperatures.length; i+1) {
  console.log(temperatures[i]);
}
index.html 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript Loops</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>

4 Answers

Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

Hi Joshua,

I think the challenge is timing out because you've created an infinite loop.

i + 1 doesn't change the value of i You have to add 1 to i and then store the result back in i

You could replace i + 1 with any of the following:

  • i = i + 1 long way to write it
  • i += 1 addition assignment operator. A little shorter.
  • i++ increment operator. This is the one you will probably most commonly see. Might not have been taught in the course though
jerry bremser
jerry bremser
3,941 Points
jerry bremser
jerry bremser
3,941 Points

can you eleborate? is that entire code? if it is it seems youre missing an input option for the user. it never prompts anything at all. again im not 100% sure what the issue is if you could show whole code or lesson reqs.

Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

Hi Jerry,

For future reference, usually a question about treehouse content will have a link to that piece of content over in the right column under "Related content".

In this case there's a direct link to the code challenge that this question is about. There you can review the challenge or test code if needed.

jerry bremser
jerry bremser
3,941 Points
jerry bremser
jerry bremser
3,941 Points

but wouldn't the var i=0 mean it can be anything between 0 and 0.9999999? by adding the +1 at the end im assuming he didnt mean to update the variable 'i' but to make it so 'i' can not be any lower than the number 1? does that sound right? just wondering before i look over it again

Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

Hey Jerry,

This mdn page will tell you what each part of the for loop is for: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for

Joshua Harman
Joshua Harman
8,821 Points
Joshua Harman
Joshua Harman
8,821 Points

JASON THAT WAS IT!!!! THANK YOU SOOOOOO MUCH!!!!!!!!!!

Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

You're welcome.