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

brayant benitez
brayant benitez
7,885 Points

having some problems understanding looping arrays.

okay so i am working on the excercise too loop an array, now i cant seem to understand why i must change temperature to say "i" i dont really seem to understand where that is coming from, i assume since the var is temperature, i should use temperature in the loop as the variable.

var temperatures = [100,90,99,80,70,65,30,10];
for (temperatures == 10; temperatures <=100;temperatures++){
  console.log temperatures
<!DOCTYPE html>
  <meta charset="utf-8">
  <title>JavaScript Loops</title>
<script src="script.js"></script>

1 Answer

Thomas Fildes
Thomas Fildes
22,687 Points

Hi Brayant,

"i" is a temporary variable which is used for indexing loop iteration. You use "i" as sort of like a counter in which you will count through the indexes in the temperatures array. Here is the code I used to pass this challenge below:

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

for (i = 0; i <= temperatures.length; i++) {

As shown above I have used a for loop for this example but you can alternatively use a while loop. The loop starts and runs the console log at i = 0 and ends when the condition "i <= length of array" is not fulfilled . Since the index starts at 0 we will log all the items in the array because between indexes 0 and 7 there are 8 items.

I hope this helps you briefly understand iterating through arrays but if not just practice indexes with loops. I was in the same position as you once and the key thing is to never give up. Happy coding!!!