Why a re-introduction?

A re-introduction to JavaScript (JS tutorial)
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The programming of javascript language is an incredible language for the interesting dynamic features.
Nowadays JavaScript used by a number of high-profile applications,
Showing the deeper knowledge on-
1. web development
2. mobile application
3. software develop
4. android development
so so.

JavaScript was created in 1995 by Brendan Eich, an engineer at Netscape,
and first released with Netscape 2 early in 1996. Then,
a few months later, Microsoft released JavaScript, a mostly compatible JavaScript work-alike with InternetExplorer 3.
The standard received a significant update as ECMAScript edition 3 in 1999.
The fourth edition was abandoned, due to political issues. Many parts of the
fourth edition formed the basis for ECMAScript edition 5,
published in December of 2009, and for the 6th major edition of the standard, was published in June of 2015

JavaScript is an object-oriented dynamic language with types and operators, standard built-in objects,
and methods. Its syntax comes from the Java and C languages,
so many structures from those languages apply to JavaScript as well.

JavaScript’s types are:-
Number — The Number is the value of javascript int, float, double
String — String display the character of javascript.
Boolean — Boolean indicates The true or false result
Function — Function is a template of javascript (Readimate program)
Object — Object is anything like — Function, Array, Date, RegExp, etc…
Symbol — (new in Edition 6)
null — found none.
undefined — Doesn’t define something.
NAN — Not a number.

javascript is a vast programming language see more for vast.