Functions are incredibly useful and can be made to do a great many things. Taking and argument is one of those things.

In the previous example we had a function that took 3 and added it to 6. This is a very useful in the off chance you specifically want to know that particular answer. However in most cases you would want to find out about 2 different numbers, not just 3 + 6.

That’s where arguments come in handy, they are a simple way to provide your function with data it needs. You just add the arguments in the “Parentheses ( )” of the function and you can now use them inside your function. Let see an example.

//function that takes 2 arguments
function Add_Two_Numbers(a, b){
    return a + b;
}

The above function will take 2 numbers as arguments and return the sum. We will use 4 as a and 8 as b.

//function that takes 2 arguments
function Add_Two_Numbers(a, b){
    return a + b
}

Add_Two_Numbers(4,8)

//This will return 12;

This is a very basic example, however you can create extremely complicated functions.

Arguments aren’t limited to numbers, you can pass it strings, or even arrays. With this you can create a function that can take in an array and use a “loop” to have it do an action on each item in the array.

This is a good example of how you can start using all these basic building blocks and using them together to build something beautiful.

Congratulations! You have leveled up in programming!


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