FREE CIW JavaScript Specialist Questions and Answers

Question 1

Which of the following is true for the prototype property?

Accepted Answer

Undefined

Answer

Null

Answer

String

Answer

Boolean

Question 2

Which option best exemplifies the proper syntax for declaring a variable?

Accepted Answer

var lastName;

Answer

var "lastname";

Answer

var last name;

Answer

var &lastname;

Question 3

What kind of variable data type is a variable that has not yet been given a value?

Accepted Answer

Referrer

Answer

Anchor

Answer

Location

Answer

Link

Question 4

What phrase describes the method of moving variables from one data type to another in JavaScript?

Accepted Answer

Casting

Answer

Parsing

Answer

Initializing

Answer

Concatenating

Question 5

Which method of the String object would you employ for composing an intricate mathematical formula with powers in JavaScript, such as "E=MC2"?

Accepted Answer

sup()

Answer

small()

Answer

anchor()

Answer

fixed()

Question 6

Linda wishes to delete some of the cookies that her website's visitors have received from her server. What is the most effective method for her to complete this task?

Accepted Answer

Change the date field to a date in the past.

Answer

Suspend the use of cookies for a short time so all the cookies on her visitors’ machines are not refreshed.

Answer

Create a new cookie that includes the value=delete field with the name=value field.

Answer

Create new cookies that contain the name=/dev/null value pair.

Question 7

In JavaScript, William is creating a constructor. When referring to the properties and methods in his object parameters and functions, he uses the phrase "this." Why?

Accepted Answer

The “this” keyword is used to represent the object as the properties and methods are defined.

Answer

William’s schema is not finalized yet, so he uses “this” as an empty placeholder in the code until the schema is set.

Answer

The word “this” has no significance outside of Wilhelm’s script ?he chose this nomenclature randomly.

Answer

William can reuse the object by substituting the word “this” for the real values, using a function to insert the real names.