Functions & Methods – JavaScript Tutorial for Beginners

What is a function? In JavaScript, a function is a named block of code that can be invoked from anywhere within the code. You can pass arguments as parameters, and assign the return value to a variable. The difference between a function, a method, and a sub-routine is basically what programming language is involved. They practically mean the same thing, but different programmers like to argue about the particular technical differences.

Copyright (c) 2013 Rodrigo Silveira


I'm learning coding says:

Thank you Sir! It was a real help! And why can’t others explain “scope” and “this” this easily?
I’ve been literally spending weeks trying to understand them… as well as property…

Amit says:

Can you plz explain the different way of explaining function inside JavaScript.
I always got confused to understand the syntax and scope of a function in different place with different needs.
1. function x(){}
2. var x = function y(){}
3. var x = {
myFunction: function (){return; }}
So there are many way to declare your function and I dont know how and when we have to do that.
Can you plz explain.

ujwal agarwal says:

it is not working ,please tell me what is the reason behind it,also please tell me how to call that function inside that object

Three One says:

1000 thumbs up! Super helpful.

Zhanibek Seitzhanov says:

Thanks! This video was very useful to me

musicaffionado says:

Finally, an explanation I understood. Thank you.

tubemonkie says:

Thanks, this helps with my concept understanding! 

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