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

Posted by Andrew Alvarez
Andrew Alvarez
11,964 Points

Confused

Challenge Task 1 of 1

Use a for or while loop to iterate through the values in the temperatures array from the first item -- 100 -- to the last -- 10. Inside the loop, log the current array value to the console. Important: The code you write in each task should be added to the code written in the previous task.

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

Jacob Mishkin
Jacob Mishkin
23,118 Points

Okay. so there are several steps in this challenge. but first this is the answer:

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

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

console.log(temperatures[i]);
}

So lets break this code down.

we need to cycle through the var temperatures, we can do this by using a standard for loop. the only thing different is that we need to use the .length method to cycle through the array. the .length method cycles though the length of the array, and to call it in the console we just need to add "[i]" to state that the console is calling the looped array. here is some more info on the .length method. I hope it helps.

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length