Question 1

The comparison,____,is true if a equals b and the data are of the same type.
A)a=b
B)a==b
C)a===b
D)a< >b

Accepted Answer

The comparison operator that checks for both value and data type is the strict equality operator (===). This means that if a equals b and they are of the same type, then the comparison a === b will return true.

Question 2

The ____ object component of a scrolling message defines where the scrolling message displays.
A)visibility
B)message
C)display
D)text

Accepted Answer

The display object component of a scrolling message defines where the scrolling message displays. This component is responsible for positioning the scrolling message on the screen. The visibility object component controls whether the scrolling message is visible or hidden. The message object component contains the text that is scrolled across the screen. The text object component defines the font, color, and size of the scrolling message.

Question 3

A(n)____ is any expression that evaluates to true or false.
A)operand
B)logical
C)concatenation
D)condition

Accepted Answer

A condition is any expression that evaluates to true or false. An operand is a data item on which a computation is performed, such as a variable or a constant. Logical operators are used to evaluate logical expressions and return true or false. Concatenation is the joining of two or more strings or values.

Question 4

Which of the following conditional operators evaluates as true if both conditions are true?
A)&&
B)!!
C)==
D)!=

Accepted Answer

The conditional operator && is a logical AND operator. It returns true only if both conditions are true.

Question 5

The ____ component of a scrolling message regulates the speed in which the characters display in the text field.
A)delay
B)chronological
C)timing
D)speed

Accepted Answer

The delay component of a scrolling message controls the time interval between the display of each character, which ultimately regulates the speed of the message. Therefore, option A (delay) is the correct choice. Option B (chronological) does not relate to the component of a scrolling message that controls the speed of characters. Option C (timing) is a vague term that could refer to various components of a scrolling message and does not specifically relate to the regulation of character speed. Option D (speed) is a possible choice, but it is not as specific or accurate as option A.

Question 6

To determine if the current value of the beginPos variable is greater than the length of the message,use the ____ statement.
A)for
B)comp
C)if
D)while

Accepted Answer

The if statement is used to evaluate a condition and execute a block of code if the condition is true. In this case, we want to check if the value of the beginPos variable is greater than the length of the message, so we can use an if statement to check this condition and execute the desired code block if the condition is true. The other options (for, comp, and while) are not appropriate for this specific task.

Question 7

Which of the following event handlers triggers JavaScript code when used with buttons and links?
A)onLoad
B)onUnload
C)onClick
D)onSubmit

Accepted Answer

onClick is the event handler that triggers JavaScript code when buttons and links are clicked. The other options, onLoad, onUnload, and onSubmit, apply to different events such as when a page is loaded, unloaded, or a form is submitted.

Question 8

The text field that displays a scrolling message must be part of a ____.
A)database
B)character set
C)condition
D)form

Accepted Answer

The text field that displays a scrolling message is typically a visual element on a user interface, and is thus part of a form.

Question 9

Conditional operators are used to compare two ____.
A)formulas
B)objects
C)functions
D)operands

Accepted Answer

Conditional operators are used to compare two operands, which can be any type of data (such as numbers, strings, or Boolean values). The operands are compared using a logical operator (such as ==, !=, >, or <) and the result of the comparison is either true or false.

Question 10

The first part of the if statement includes ____.
A)JavaScript statements to execute if condition is true
B)JavaScript statements to execute if condition is false
C)the if (condition)
D)none of the above

Accepted Answer

The first part of an if statement is the condition itself, which is specified within parentheses after the keyword 'if'. This condition is evaluated to determine whether the subsequent code block should be executed.

Question 11

The ____ component of a scrolling message is the location of the next character in a text string.
A)display
B)position
C)location
D)space

Accepted Answer

The position component of a scrolling message refers to the location of the next character in a text string. This is what determines where the message will continue to scroll from. The display component refers to the actual appearance of the message on the screen, but does not involve the sequencing of characters. Location is a vague term and could refer to various aspects of the message, while space does not relate to the sequencing of characters either.

Question 12

The JavaScript statement,____,automatically adds 1 to a variable.
A)variable*1
B)variable = variable * 1
C)variable+++
D)variable++

Accepted Answer

The "++" operator is the increment operator and automatically adds 1 to the variable.

Question 13

A ____ function should have a mechanism that terminates the function when it completes its task.
A)recursive
B)delay
C)timeout
D)concatenated

Accepted Answer

Recursive functions must have a base case that terminates the recursion; without it, the function would call itself indefinitely, leading to a stack overflow error.

Question 14

A(n)____ is an action,such as a mouse click or a window loading.
A)index
B)radix
C)method
D)event

Accepted Answer

An event is an action that occurs in the program. Examples of events include a mouse click, a window loading, and a key press. Therefore, the best choice is D - event.

Question 15

An operand is a ____ data type or value.
A)numerical
B)string
C)logical
D)all of the above

Accepted Answer

An operand can be of any data type or value, including numerical, string, or logical, as it is essentially what operators act upon in programming and mathematical expressions.

Question 16

A scrolling message displays either in a text field within the Web page or on the ____.
A)status bar
B)address bar
C)menu bar
D)any of the above

Accepted Answer

Scrolling messages typically appear on the status bar of a Web page. They can also appear within a text field or anywhere else on the page, but the status bar is the most common location. The address bar and menu bar are not typically used for scrolling messages.

Question 17

Which of the following conditional operators always evaluates as true if a does not equal b?
A)a{b}
B)a==b
C)a >b
D)a!=b

Accepted Answer

The conditional operator that always evaluates to true if a does not equal b is the "not equal to" operator, represented by the symbol !=. Therefore, the correct choice is D.

Question 18

Although scrolling text can be assigned to a < div > tag container using the ____ property,it does not allow for as much control as a form object like a text field or button.
A)outerHTML
B)marquee
C)scrollText
D)innerHTML

Accepted Answer

The answer of Although scrolling text can be assigned to...

Question 19

When using a(n)< ____ > text field,you can format the text using an inline style.
A)message
B)input
C)msg
D)scroll

Accepted Answer

An input text field allows users to input data, including formatted text using an inline style. A message field is typically used to display a message or notification to the user, while a msg field and scroll field are not commonly used in web development.

Question 20

When the user performs an action,such as a mouse click,which of the following associates that action with a function?
A)an event handler
B)the < body > tag
C)a conditional operand
D)the setTimeout()method

Accepted Answer

An event handler is used to associate a function with a specific user action, such as a mouse click or keypress. This allows the function to be executed whenever the user performs the corresponding action.

Quiz 10: Creating Pop-Up Windows, Adding Scrolling Messages, and Validating Forms

The comparison,____,is true if a equals b and the data are of the same type.

The ____ object component of a scrolling message defines where the scrolling message displays.

A(n) ____ is any expression that evaluates to true or false.

Which of the following conditional operators evaluates as true if both conditions are true?

The ____ component of a scrolling message regulates the speed in which the characters display in the text field.

To determine if the current value of the beginPos variable is greater than the length of the message,use the ____ statement.

Which of the following event handlers triggers JavaScript code when used with buttons and links?

The text field that displays a scrolling message must be part of a ____.

Conditional operators are used to compare two ____.

The first part of the if statement includes ____.

The ____ component of a scrolling message is the location of the next character in a text string.

The JavaScript statement,____,automatically adds 1 to a variable.

A ____ function should have a mechanism that terminates the function when it completes its task.

A(n) ____ is an action,such as a mouse click or a window loading.

An operand is a ____ data type or value.

A scrolling message displays either in a text field within the Web page or on the ____.

Which of the following conditional operators always evaluates as true if a does not equal b?

Although scrolling text can be assigned to a < div > tag container using the ____ property,it does not allow for as much control as a form object like a text field or button.

When using a(n) < ____ > text field,you can format the text using an inline style.

When the user performs an action,such as a mouse click,which of the following associates that action with a function?