# Basic Javascript #1_variable

** right click on a webpage and select Inspect. We can use 'Console' tab for Javascript. **

- Let's make a list

`let a_list = ['수박','참외','배']`

- `a_list[1]` shows '참외'

- To add another variable, 
`a_list.push('감')`

- `a_list` shows `[수박', '참외', '배', '감']`


** Dictionary form **

- let a_dict = {'name':'bob','age':27}

- `a_dict['name']` shows 'bob'

- add another variable `a_dict['height'] = 180`

`a_dict` shows `{name: 'bob', age: 27, height: 180}`


** Separation **
- `let myemail = 'sparta@gmail.com'`

- `myemail.split('@')` means separate `myemail` based on '@'

`['sparta', 'gmail.com']`

>It's also a list.


- `myemail.split('@')[1]` shows `gmail.com`

- if you split this one more by '.'

`myemail.split('@')[1].split('.')`

`['gmail', 'com']`


- `myemail.split('@')[1].split('.')[0]` shows `gmail`