How many types of functions in JavaScript supports?

(a)

2

(b)

3

(c)

4

(d)

many

The function body enclosed with________.

(a)

( )

(b)

< >

(c)

[ ]

(d)

{ }

Which library function returns the element that has the ID attribute with the specified value_______.

(a)

is NAN ( )

(b)

stElementBy ID ( )

(c)

getelement By ID ( )

(d)

get element ID ( )

_______functions allow the programmer to modularize a program.

(a)

Pre-defined

(b)

Library

(c)

User-defined

(d)

All the above

The_________ function is used to check whether the given value or variable is valid number.

(a)

isNaN ()

(b)

touppercaser( )

(c)

toLowerCase( )

(d)

All the above