JavaScript Average

Did you just searched JavaScript average or struggling to find the average using array and function. Here is a step by step tutorial for finding the average using JavaScript. We will try to cover different implementations such as arrays and functions for calculating the average of a given set of numbers.

If you have just started with JavaScript coding then you might need this basic arithmetic calculation in day to day programming.

In this article, I’m going to give you various examples of how we can find the average using JavaScript?

## What is Average?

The average is simply the sum of all the values divided by the total number i.e count of values.
Thus, the average is the central value of a set of numbers.

## How to Calculate JavaScript Average?

Let get started with the coding part.

### Example 1: Find the average of 6 values using JavaScript : 40,55,89,45,63,12.

``````var sum=0;
var average=0;

sum=40+55+89+45+63+12;
console.log("The sum of six number is " + sum);
average=sum/6;
console.log("The average of six numebr is " + average);``````

Output on Console javascript sum and average: What if the given value count is very large in number? And you don’t want to count it manually.

Then the JavaScript length function comes into play.

### Example2: Find the JavaScript average of an array

``````var values=[45,77,1,32,47,10,35,91,20,17,5,41];
var i=0 , sum=0, average=0;

console.log("Total count of values " +values.length);
// simple loop to sum the value in a an array JS
for(i=0;i<values.length;i++)
{
sum=sum+values[i];
}

console.log("Sum of all values " + sum);
average=sum/values.length;
console.log("Javascript Average is "+average);
``````

Output on Console average of an array using JS: You might be wondering if you can code a Simple average function in JS that will take values as an input.

Well, let’s built a simple average function.

We will reuse the code which we have already built.

### Example 3: Simple average function in JavaScript

Encapsulate all the logic in a function.

Let’s name the function as average_value.

``````
//function define
function average_value(num){
var i=0 , sum=0, average=0;
var values;
values=num;

console.log("Total count of values " +values.length);
// simple loop to sum the value in a an array javascript
for(i=0;i<values.length;i++)
{
sum=sum+values[i];
}
console.log("Sum of all values " + sum);
average=sum/values.length;
console.log("Average is "+average);
}
``````

Let’s have a set of values to be passed to the average function.

``````//array of number
var num=[45,56,78,0,4,2,6];
``````

Now we just need to pass the above value to the function and call it.

``````var num=[45,56,78,0,4,2,6];
//function call
average_value(num);
``````

Output on the console of the above simple JS average function: I hope this information helped you out if you have searched for JavaScript average. Let us know your feedback in the comment section below and feel free to share. Peace!