JavaScript Practice Test

Question 1

Which standard construct for data validation is available in the development environment?

Accepted Answer

All of the above

Answer

Validation constructs

Answer

Super controlled loop constructs

Answer

case sensitivity check

Question 2

In NetScape, the main purpose of a "Live Wire" is to

Accepted Answer

permit server side, Javascript code, to connect to RDBMS

Answer

Support only non relational database

Answer

create linkage between client side and server side

Answer

To interpret JavaScript code

Question 3

When the page has finished parsing, which attribute is utilized to specify that the script be executed?
 (only for external scripts)

Accepted Answer

defer

Answer

type

Answer

parse

Answer

a sync

Question 4

The script tag must be included in

Accepted Answer

head and body

Answer

title and head

Answer

D head

Answer

all the mentioned

Question 5

To add external JS code in your HTML document, which of the following attributes is used?

Accepted Answer

src

Answer

ext

Answer

link

Answer

script

Question 6

The keyword or property you use to refer to an object that was used to invoke them is

Accepted Answer

this

Answer

object

Answer

to

Answer

from

Question 7

What is the basic difference between JavaScript and Java?

Accepted Answer

Functions are values, and there is no hard distinction between methods and fields

Answer

Functions are considered as fields

Answer

There is no difference

Answer

Variables are specific

Question 8

The definition of augmenting classes is.

Accepted Answer

objects inherit prototype properties even in dynamic state

Answer

objects inherit prototype properties in static state

Answer

objects inherit prototype properties only in dynamic state

Question 9

The JSON() method's property is

Accepted Answer

it is invoked automatically by the JSON.stringify() method

Answer

it cannot be invoked in any form

Answer

it can be invoked manually as object.JSON()

Answer

it will be automatically invoked by the compiler

Question 10

We state that a class B can extend another class A when it can.

Accepted Answer

A is the superclass and B is the subclass

Answer

B is the superclass and A is the subclass

Answer

Both A and B are the subclass

Answer

Both A and B are the superclass