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

Posted by Dean Hollstrom
Dean Hollstrom
5,170 Points

Use a for or while loop to iterate through the values in the temperatures array from the first item -- 100 --

Having a bit of an issue with this question, kinda struggling to get my head around for/while loops at the moment

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

var tempNum = 0;

while (tempNum < 10) {
  tempNum += 1;
}
  console.log(temperatures[tempNum];
index.html 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript Loops</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>

3 Answers

David Tonge
David Tonge
Courses Plus Student 45,640 Points 
while (tempNum < temperatures.length) {
  console.log(temperatures[tempNum]);
  tempNum += 1;
}

You want your "console.log" to be apart of your loop so it logs the result every time. Also you want your console to log before tempNum is iterated so that the "0" index isn't missed.

Ali Amirazizi
Ali Amirazizi
16,087 Points
Ali Amirazizi
Ali Amirazizi
16,087 Points

Here's the for/loop version for comparison:

var temperatures = [100,90,99,80,70,65,30,10];
for (var i = 0; i < temperatures.length; i+=1) {
     console.log(temperatures[i]);
}
Dean Hollstrom
Dean Hollstrom
5,170 Points
Dean Hollstrom
Dean Hollstrom
5,170 Points

I did have something like this before posting the question, I must have just forgotten the square brackets. Thanks David

David Tonge
David Tonge
Courses Plus Student 45,640 Points

No prob.