Introduction

this is one simple blog to describe what must to learn when using javascript.

Editor

you must select one source code editor. there are multiples of choices. And I list what i like:

1. jsbin : it is one simple on line code editor. i recommend using it if you only want to write simple javascript snippet and show the result at once. If you are from JAVA world and you should be familiar with Scratches feature used in IntelliJ IDEA. Yes, they are analogous features.
2. jsfiddle : it is another version on line javascript code editor. You can use it as the replacement of jsbin.
3. VSCode : it is one of the best code editor (not on line editor). I recommend it stronly.

Naming Convention

I recommend using airbnb style. it is here: https://github.com/airbnb/javascript

Running Environment Setup

If you do not use jsbin or jsfiddle to show result of javascript snippet , you should set up local environment.

I recommend python. it is built-in tool in Macbook. And it is super easy to install on Windows system.

cd <directory-of-your-javascript-files>
# if python version is above 3.X
python -m http.server 
# if python version is above 2.X
python -m SimpleHTTPServer

After setting up your local environment, it is time to write your javascript snippet and show how it works!

As to illustrate how the local environment works, please follow the steps to finish 'hello world'.

python -m SimpleHTTPServer

access 'http://localhost:8000/helloworld.html' from browser