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

Jamil Naeem
Jamil Naeem
6,071 Points
Posted by Jamil Naeem
Jamil Naeem
6,071 Points

how do I use a for loop to cycle through an array full of numbers that do not have a consistent pattern

var temperatures = [100, 90, 99, 87, 45, 10] for (i=100; i<= temperatures.length; i++)

script.js 
var temperatures = [100,90,99,80,70,65,30,10];
for (i = 100; i <= temperatures.length ; i += 1) {
  console.log();
}
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

Ben Reynolds
Ben Reynolds
35,170 Points
Ben Reynolds
Ben Reynolds
35,170 Points

I assume you initialized i = 100 since that's the first value in the array, but you should start with the first index which is 0.

Since the length of the array is 8, the first time through the loop it will check if 100 <= 8, and never run. Try starting the counter at zero. Not sure exactly what you mean by numbers that do not have a consistent pattern, but the loop won't care what order they're in. In the console.log statement you can grab whatever item is at the index of i.

Jamil Naeem
Jamil Naeem
6,071 Points
Jamil Naeem
Jamil Naeem
6,071 Points

Thanks! I was a little confused about why it wasn't running but it was a syntax issue.