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

Posted by David Ryan
David Ryan
Courses Plus Student 14,981 Points

For loop for arrays

What am I doing wrong?

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

for ( var i = 0; i < temeratures.length; i += 1; ) {
  console.log(temperatures);
}
index.html 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript Loops</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>
Antti Lylander
Antti Lylander
9,686 Points
Antti Lylander
Antti Lylander
9,686 Points

you are close. Just think how you access a value in an array and you know the solution!

2 Answers

Adam Beer
Adam Beer
11,314 Points
Adam Beer
Adam Beer
11,314 Points

I hope you like it better. That's nicer.

for ( var i = 0; i < temperatures.length; i += 1) {
    console.log(temperatures[i]);
}
Adam Beer
Adam Beer
11,314 Points
Adam Beer
Adam Beer
11,314 Points

Hi David! The solution is a bit more complicated. You misspelled the temperature in the loop. The loop decreases with -10. Hope this help.

for ( var temperatures = 100; temperatures > temperatures.length; temperatures -=10 ) {
  console.log(temperatures);
}
Antti Lylander
Antti Lylander
9,686 Points
Antti Lylander
Antti Lylander
9,686 Points

This is wrong in so many ways. Guys, please test your suggestions yourselves.

Adam Beer
Adam Beer
11,314 Points
Adam Beer
Adam Beer
11,314 Points

It is a very interesting. Please tell me, why does my code work?

David Ryan
David Ryan
Courses Plus Student 14,981 Points

Adam, sorry that can't be right as I did: 

for ( var i = 0; i < temperatures.length; i += 1 ) {
  console.log(temperatures[i]);
}
Adam Beer
Adam Beer
11,314 Points
Adam Beer
Adam Beer
11,314 Points

It has several solutions :) Not problem. But I also wrote this :) Congratulations to the solution. Happy coding!

Antti Lylander
Antti Lylander
9,686 Points
Antti Lylander
Antti Lylander
9,686 Points

Adam, it passes the challenge because the test suite is not perfect. This piece of code, however, does not do what it is supposed to do. In fact, it doesn't do anything at all. Try it in console.

Adam Beer
Adam Beer
11,314 Points
Adam Beer
Adam Beer
11,314 Points

You're right. I hope my second solution is better for you :)