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

Posted by ashok bishnoi
ashok bishnoi
10,160 Points

what's wrong with these codes?\

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.

script.js 
var temperatures = [100,90,99,80,70,65,30,10];
var i;
for (i = 0; i < tempratures.length; i+=1) {
    console.log(tempratures);
}
index.html 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript Loops</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>

6 Answers

Hugo Paz
Hugo Paz
15,622 Points
Hugo Paz
Hugo Paz
15,622 Points

Hi ashok,

You have 2 typos.

The array name is temperatures, you have tempratures twice in your for loop.

Jerko Begic
Jerko Begic
6,990 Points
Jerko Begic
Jerko Begic
6,990 Points

try this: var temperatures = [100,90,99,80,70,65,30,10]; for (var i = 0; i < temperatures.length; i++) { console.log( temperatures[i] ); }

James Kim
James Kim
8,475 Points
James Kim
James Kim
8,475 Points

when you console.log(temperature), you want to log the index as well... your "i" variable. So set up your for loop like this...

for(var i = 0; i<temperature.length; i++){
    console.log(temperature[i]);
}

without the [i]... javascript is just going to print the last item in your array as it loops through. So with [i], it will print out all the items in the array one by one.

Hope that works outs.

ashok bishnoi
ashok bishnoi
10,160 Points
ashok bishnoi
ashok bishnoi
10,160 Points 
var temperatures = [100,90,99,80,70,65,30,10];
var i;
for (i = 0; i < temperatures.length; i+=1) {
    console.log(i);

now...

Hugo Paz
Hugo Paz
15,622 Points
Hugo Paz
Hugo Paz
15,622 Points

You need to show the temperature in your console log. [i] represents the index of the array temperature. How do you access a value in an array?

ashok bishnoi
ashok bishnoi
10,160 Points
ashok bishnoi
ashok bishnoi
10,160 Points 
var temperatures = [100,90,99,80,70,65,30,10];
var i;
for (i = 0; i < temperatures.length; i+=1) {
    console.log(temperatures);
}

now i am still wrong

Hugo Paz
Hugo Paz
15,622 Points
Hugo Paz
Hugo Paz
15,622 Points

You need to loop through all the indexes in the array. temperatures[i]