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

Posted by Gabriel E
Gabriel E
8,916 Points

This is challenge is slightly stumping me!

Hi there, So, you can see this the layout of this challenge, and I'm a bit stuck. I'm pretty sure I butchered the for loop, but I'm not sure how to meet the requirements that I'm supposed to use in the for loop. Any suggestions?

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

for ( i = 0; i < 100; i += ) {
  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>

2 Answers

Michal Weizman
Michal Weizman
14,050 Points
Michal Weizman
Michal Weizman
14,050 Points

Hi Gabriel, You should use the variable i inside the console.log in order to print out all of the items in the array. Temperatures is the name of the array, but you need to write temperatures[i] for each array item. Also, you do not want to iterate through the array 100 times - but only through the length of the array which is equal to: temperatures.length. Like so:

for ( i = 0; i < temperatures.length; i +=1 ) {
  console.log(temperatures[i]);
}
Gabriel E
Gabriel E
8,916 Points

Ahhh, that's what it is! I was about to do that right off the bat, but I decided against it. I understand now. Thanks for your help!

Casey Ydenberg
Casey Ydenberg
15,622 Points
Casey Ydenberg
Casey Ydenberg
15,622 Points

Hi Gabriel,

As a hint, you'll want your i to refer to the index/position within the array, rather than the actual value. So you are correct to start at i = 0 (though you should use var i = 0) ... but the condition for ending the loop should take into account that i will refer to the index and not the value. (ie 100 is way too high).

Does that get you any closer?

Gabriel E
Gabriel E
8,916 Points

Yes, indeed! Thank you both for the helpful hints and advice!