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

for or while loop in array?

Stuck here not sure what to do to order the the array down properly. :(

script.js
var temperatures = [100,90,99,80,70,65,30,10];
for(var i = 100; i > 9; i-=temperatures);
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>

this was the question; 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.

1 Answer

Steven Parker
Steven Parker
222,024 Points

The items are already in the required order, the loop only needs to iterate through them starting at the beginning (index 0). The index can be incremented by one each time. The "length" property of an array makes a handy value to use for the loop end condition test.

Then give the loop a code body to control (braces instead of a semicolon). Inside the body, put the log statement to log only the current item. Use indexing (brackets) and the loop variable to select the current item from the array.