Javascript variables

Which variable is undefined

• var year;

• var ;

• var year =10; year = 7;

• var year = 7 ;

Which is of the following not correct rule for writting variables names.

• These need to be in the lowercase or camel case

• spaces are allowed while naming these.

• These could be mix of letters, Numbers, _ or $

• you cannot start with a number

Variable is not case sensitive

• True

• False

One of the follwing statements is correct

• var myVariable = "Hello"

• var myVariable = /Hello/

• var myVariable = "Hello'

• var myVariable = Hello

which the camel case variable name is correct

• var my _code_date = "c"

• var myCodeDate = "c"

• var MycodeDate = "c"

• var MyCodeDate = "c"

You will always find these in pairs if you have an opening one you will find a closing one as well. Even if it is after many multiple lines.

• { Braces}

• [ Brackets ]

• ( Parentheses )

• All