<JavaScript> 02. Operator, properities, Methods, Variable

1.

<Operator 종류>

Boolean

Null

Undefined

Number

String

symbol

 

2.

1) properities

ex ) 'Hello'.length 

 

2)(Methods)

ex)

'Hello'toUpperCase()

'Hello'indexof('d')

'Hello'.trim() 

 

3.

실행 유보 shift+enter

 

var name="GODBIN"

"Hello"+name+"is cute"