Question 1

The __________, which is part of the developer tools in a modern web browser, can be used to enter test code and view error message related to JavaScript.
A) address bar
B) bookmarks list
C) console
D) emulator

Accepted Answer

The console is a part of the developer tools in a modern web browser that can be used to enter test code and view error messages related to JavaScript. The address bar is used to type in web addresses or search queries, the bookmarks list is used to save and organize bookmarks, and an emulator is a tool used to replicate the functionality of one device on another device or platform.

Question 2

You can access any HTML element by specifying a CSS selector using the ____ method.
A) querySelector()
B) addEventListener()
C) checkValidity()
D) write()

Accepted Answer

The querySelector() method is used to select and access any HTML element using CSS selectors. This provides a powerful and flexible way to access, manipulate, and update the content and structure of a web page using JavaScript. The other options, addEventListener(), checkValidity(), and write(), are not appropriate methods for accessing HTML elements in this context.

Question 3

A(n) __________ is a JavaScript instruction that performs an action.
A) function
B) event
C) statement
D) operator

Accepted Answer

A statement is a line of code that performs a specific action in JavaScript. A function is a type of statement, but not all statements are functions. An event is a specific action that triggers a response in JavaScript, but it is not an instruction itself. An operator is a symbol that performs a specific operation on one or two values, but it is not a complete instruction on its own.

Question 4

Standard ____ for objects include the text content associated with an object, the name of the object, and the name of an associated attribute.
A) properties
B) statements
C) attributes
D) values

Accepted Answer

The term "properties" is commonly used in programming to refer to characteristics or attributes of an object. The text content, name, and associated attribute are all examples of properties of an object. The other options (statements, attributes, and values) are not the best choices as they either do not accurately describe these characteristics or are not typically used to refer to them in programming.

Question 5

Every JavaScript statement ends with a(n) __________.
A) colon ( : )
B) period ( . )
C) semicolon ( ; )
D) comma ( , )

Accepted Answer

Every JavaScript statement should end with a semicolon (;) to indicate the end of the statement. Although some statements may work without the semicolon, it is good practice to always include it.

Question 6

The __________ object is the parent element of the DOM tree.
A) Document
B) Element
C) Head
D) Body

Accepted Answer

The Document object is the parent element of the DOM tree. It represents the entire HTML document and is the entry point for accessing and manipulating the DOM.

Question 7

The first line of a function begins with the word function , followed by its name and a pair of ____.
A) quotation marks
B) parentheses
C) equal signs
D) exclamation marks

Accepted Answer

The first line of a function begins with the word function, followed by its name and a pair of parentheses which may or may not include parameters.

Question 8

The DOM defines ____, which are actions that are associated with an object.
A) modes
B) methods
C) events
D) activities

Accepted Answer

The answer of The DOM defines ____, which are actions...

Question 9

To assign a new property value, you use the assignment operator, which is simply a(n) __________.
A) equal sign ( = )
B) plus sign ( + )
C) less-than sign (
D) greater-than sign ( > )

Accepted Answer

The assignment operator in programming is represented by the equal sign (=), which assigns the value on the right to the variable on the left.

Question 10

The punctuation for a function is similar to that of a CSS style rule: an opening ____ goes at the beginning.
A) curly brace ( { )
B) bracket ( [ )
C) quotation mark ( " )
D) pound sign ( # )

Accepted Answer

The opening curly brace ({) is used in both CSS style rules and function declarations to indicate the beginning of the block of code.

Question 11

Multi-line comments in JavaScript use the same format as __________ comments.
A) WebVTT
B) XHTML
C) CSS
D) HTML

Accepted Answer

Multi-line comments in JavaScript use the same format as CSS comments, which are enclosed within /* and */.

Question 12

JavaScript allows you to create __________, which are values that are stored and that you can access with a name that you specify.
A) events
B) variables
C) event listeners
D) statements

Accepted Answer

JavaScript allows you to define variables, which are values that are stored and that you can access with a name that you specify.

Question 13

Developers can write JavaScript that responds to actions, known as __________, which include many actions commonly performed on a web page.
A) methods
B) activities
C) events
D) statements

Accepted Answer

JavaScript can respond to actions on a web page through events. Methods refer to functions that can be applied to objects, activities is not a commonly used term in JavaScript, and statements are individual lines of code that perform an action.

Question 14

Whenever you use a method, you specify its parent object first, followed by a(n) __________ and then the method name.
A) period
B) comma
C) semicolon
D) hyphen

Accepted Answer

The period is used to separate the parent object from the method being called, as well as to separate any additional parameters that may be passed to the method.

Question 15

You specify a CSS selector in __________ within the parentheses of the querySelector() method to reference an object.
A) square brackets ( [ ] )
B) curly braces ( { } )
C) angle brackets ( )
D) quotes ( " " )

Accepted Answer

The answer of You specify a CSS selector in __________...

Question 16

Writing code to look up and change data associated with parts of HTML documents requires a standardized way of referring to the parts of a Web page; this system is known as the Document _________ Model.
A) Element
B) Object
C) Property
D) Method

Accepted Answer

The correct term is the Document Object Model (DOM), which is a cross-platform and language-independent interface that treats an XML or HTML document as a tree structure wherein each node is an object representing a part of the document.

Question 17

The ____ event occurs when a user clicks or touches an element.
A) click
B) submit
C) focus
D) load

Accepted Answer

The click event is triggered when a user clicks or touches an element such as a button, link, or image. This event is commonly used in web development for implementing interactive features and user interfaces. The other options are not relevant to this type of event.

Question 18

The statement that creates a variable starts with the keyword __________.
A) function
B) var
C) variable
D) create

Accepted Answer

The keyword "var" is used to create a variable in JavaScript.

Question 19

The __________ property refers to the current value of a form field or an object property.
A) classValue
B) src
C) textContent
D) value

Accepted Answer

The value property refers to the current value of a form field or an object property. The other options are not directly related to representing the value of a form field or object property.

Question 20

The ____ event occurs when a user moves the mouse pointer over an element or touches an element.
A) submit
B) mouseover
C) mouseout
D) load

Accepted Answer

The mouseover event occurs when a user moves the mouse pointer over an element. Option A (submit) occurs when a user submits a form, Option C (mouseout) occurs when a user moves the mouse pointer out of an element, and Option D (load) occurs when a page has finished loading.

Quiz 13: Programming Web Pages With Javascript

The __________, which is part of the developer tools in a modern web browser, can be used to enter test code and view error message related to JavaScript.

You can access any HTML element by specifying a CSS selector using the ____ method.

A(n) __________ is a JavaScript instruction that performs an action.

Standard ____ for objects include the text content associated with an object, the name of the object, and the name of an associated attribute.

Every JavaScript statement ends with a(n) __________.

The __________ object is the parent element of the DOM tree.

The first line of a function begins with the word function , followed by its name and a pair of ____.

The DOM defines ____, which are actions that are associated with an object.

To assign a new property value, you use the assignment operator, which is simply a(n) __________.

The punctuation for a function is similar to that of a CSS style rule: an opening ____ goes at the beginning.

Multi-line comments in JavaScript use the same format as __________ comments.

JavaScript allows you to create __________, which are values that are stored and that you can access with a name that you specify.

Developers can write JavaScript that responds to actions, known as __________, which include many actions commonly performed on a web page.

Whenever you use a method, you specify its parent object first, followed by a(n) __________ and then the method name.

You specify a CSS selector in __________ within the parentheses of the querySelector() method to reference an object.

Writing code to look up and change data associated with parts of HTML documents requires a standardized way of referring to the parts of a Web page; this system is known as the Document _________ Model.

The ____ event occurs when a user clicks or touches an element.

The statement that creates a variable starts with the keyword __________.

The __________ property refers to the current value of a form field or an object property.

The ____ event occurs when a user moves the mouse pointer over an element or touches an element.