(in progress) Types of languages; Javascript, V8, EC6; Angular and React compared to Rails; Node

Current trends: EC6, V8, Angular & React, Node

Types of Languages
Interpreted/Dynamic: Python, Ruby 
Compiled: C, C++, Java 
Scripting: ECMA
Markup: HTML, Markdown

What is a scripting language?
-A scripting or script language is a programming language that supports scripts, programs written for a special run-time environment that automate the execution of tasks that could alternatively be executed one-by-one by a human operator.[1] Scripting languages are often interpreted (rather than compiled).

JavaScript is an interpreted language, not a compiled language. A program such as C++ or Java needs to be compiled before it is run. The source code is passed through a program called a compiler, which translates it into bytecode that the machine understands and can execute.
(Wiki)

V8
JS engine built in Google Chrome
-V8 is a JavaScript engine build in the google development center in Germany. It is open source and written in C++. It is used for both client side (Google Chrome) and server side (node.js) JavaScript applications.
(Wiki)

JavaScript History
-inspired by Self and Scheme
-outwardly looks like Java

What’s the difference between Angular and React?
In Angular - everything exists in the HTML.
In React - everything exists in the JS. Renders the HTML.

WTF IS ANGULAR
Why Rails5 no longer includes JQuery?
>>> Angular is JQuery, wouldn’t need to require JQuery in Rails? (?)

Provides functionality of:
(Analogous to Rails:)
	-simplifies injections/configuration (injections are 	    similar to gems)
controller passing ivars 
does the work of embedded ruby code in a jquery-like manner
rendering and iterating through rails objects 
display objects for you 

Do you still need Bootstrap?
Yes - still use for display/formatting

Watch:
Tutorial on Angular1: CodeSchool tutorial

How to use Angular and Rails?
Angular1 - can include it in assets > in javascripts or stylesheets?
Angular2 - needs to have node on the back, if you want to use with rails as well — have to set up rails as an API

Node Environment Setup
Node website > install it one place 
Homebrew > install it another place

Best option > use Homebrew

JavaScript ES6
Some changes, newest version of 
Change in syntax
Some added features
No more var
const and let (more like a compiled? language)
no more semicolons
ES6 can be transpiled back into ES5 compatible 
There are promises (that can not be - something completely new)