Local-Global Variable | Default Value in JavaScript

Local-Global Variable | Default Value in JavaScript

Local vs Global Variable.
How to assign default value to a function parameter?

Suggest:

☞ #0 JavaScript Tutorial for Beginners | Introduction

☞ #1 Getting Started | JavaScript Tutorial for Beginners

☞ Function Expression in JavaScript

☞ #7 History of JavaScript

☞ #4 Constants in JavaScript