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

Posted by Daniela Fernandes Smith
Daniela Fernandes Smith
Courses Plus Student 10,353 Points

My code didn't work and I'd like what's wrong with it

The code attached below is what I wrote, and I tried it in the console and nothing really happened. What am I missing, please? Should I create a function with the for loop and then call the function?

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>

2 Answers

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,972 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,972 Points

Your condition to run is: i = temperatures.length. The result is i has been assigned a value of temperatures.length and you have created an infinite loop.

Try the following in a workspace and check the console:

var temperatures = [100,90,99,80,70,65,30,10];
var j = 0;

for (var i = 0; i = temperatures.length; i += 1) {
  console.log(temperatures[i]);
  console.log(i);

  j += 1;

  if (j > 10) {
    break; 
  }

}

Use i < temperatures.length instead.

Daniela Fernandes Smith
PLUS
Daniela Fernandes Smith
Courses Plus Student 10,353 Points
Daniela Fernandes Smith
Daniela Fernandes Smith
Courses Plus Student 10,353 Points

Thank you! You’re absolutely right, I don’t know how I missed that!