Marcel Mokos
Nov 27, 2018 · 2 min read

Part #1: How to search for information, where I can try Javascript.

JavaScript is a cross-platform, scripting language used to make web pages interactive. (What is javascript on MDN)

JavaScript is a cross-platform source:

What is ECMAScript?

ECMAScript or ES is a standardized specification for a general purpose scripting language. JavaScript is a language that conforms to ECMAScript specification.

I search Javascript basics every day.

Where you can find information

Prefer JavaScript documentation on MDN (Mozilla developer network):

  • Learn Web Development provides information for beginners and introduces basic concepts of programming and the Internet.
  • JavaScript Guide (this guide) provides an overview of the JavaScript language and its objects.
  • JavaScript Reference provides detailed reference material for JavaScript.

Bookmark JavaScript Reference on MDN in your browser. I highly recommend to not use W3school. There is even chrome extension to remove W3school from search results.

Run javascript in your browser


Learn more on

  • you can click on the green button to run your embedded javascript code bellow
  • you can open website and create new “Hello world” example

REPL: read => eval => print loop

  • reading single user input => evaluates them => and then returns the result to the user
  • The console is javascript REPL for browser developer tools
  • is a web platform providing REPL for various languages


  • more then a REPL, it will provide us full-featured editor to write React in the browser
React example using

ableneo Technology

Application Development, Data Science, Experience Platforms

Marcel Mokos

Written by

I'm fanatic to next generation Javascript lambda, yield, async/await everything. I admire typescript and flow types. Javascript will ultimately rule the world.

ableneo Technology

Application Development, Data Science, Experience Platforms

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