Let's play with Functions in JavaScript

Updated: Jul 21

Generally speaking, The functions are a great building block that will reduce the amount of code you will need in your app.

Let's make it simpler:

You've created a kind of template that can be reused whenever you want to in many situations.

For example, you need to add two numbers and add 1 to the sum of those two numbers & you need to do this activity for more than 10 pairs of numbers like 2 and 3, 4 and 6, 9 and 21, etc.

Prashant says he can't do it manually, especially when writing code.

Here, we can write a function that will take two arguments as input parameters for the function, which will compute the sum of two numbers, add 1 at last, and return the result to us.

Let's see how we can do it in JavaScript.

function addTwo(num1, num2) {
    sum = (num1 + num2) + 1;
    return sum;

Isn't it cool?

We just need to call the function (technically, it is known as invoking the function) as


let's pass the arguments so that it can return the actual output


it will output the 6 as we defined in our function that adds two values passed by the user as input parameter and add 1 at last.

It's crazy!

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