JavaScript – Basics
JavaScript, initially called LiveScript is a robust client-side scripting
language, used mainly for make your webpage more interactive. This
also helps in communicate data between the server and the browser.
JavaScript is also used in game development and mobile application
development. It Also help in reduce the traffic of server side.
JavaScript was developed by Brendan Eich in 1995, which appeared in
Netscape, a popular browser of that time.
Please note that JavaScript and Java are very much unrelated. Java is a
very complex programming language whereas JavaScript is only a
scripting language.

Limitation of JavaScript
1. JavaScript doesn’t support any network related programming.
2. JavaScript doesn’t support multithreading

JavaScript Output
JavaScript can display data in following ways:
Dialog boxes() – Display output using alert, prompt and confirm dialog
document.write() – Used to insert text onto your web page (this text
can actually be HTML elements).
innerHTML – Used to display output in a specific place or in a division
console.log() – Used to display output on the console of a browser.

JavaScript – Variables
A variable is basically an identifier for a value or simply the Variables
are used to store values or expressions
The way to use variables is by using the var keyword followed by the
variable name.
var empName;
In this line of code, I declared a variable called empName. Right now, It
doesn’t contain any value. So initialization is required here –
var empName = “Hernan”;

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