Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

ToJuana N
ToJuana N
1,752 Points
Posted by ToJuana N
ToJuana N
1,752 Points

loop to iterate through an Array

Help with my code

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

for (var i =100; i < temperatures.length; i+=1) {
  console.log([i]);   

}
index.html 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript Loops</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>

1 Answer

joo
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
joo
Python Development Techdegree Graduate 16,498 Points
joo
.a{fill-rule:evenodd;}techdegree seal-36
joo
Python Development Techdegree Graduate 16,498 Points 
var temperatures = [100,90,99,80,70,65,30,10];
for (let i=0; i < temperatures.length;  i+=1) {
  console.log(temperatures[i]);   
}

The variable "temperatures" lenght (which is 8 in this case) is not more than or equal to 100! So your code will never run! Ask yourself, is the variable length is more than 0? In this case, is 0 < 8? Yes, it is! It adds +1 to 0 and the loop continues, Is 1 < 8? Yes, it is! And so on.. Until!, it becomes falls! Then we console the array.