Deck 5: Working With the Document Object Model Dom and Dhtml

Question 1

A node attached with the appendChild()method is always added as the last child element of the parent element.

Answer 1

True

Question 2

The ____ method is used to cancel a setTimeout()method before its code executes.

A) stopTimeout()
B) cancelTimeout()
C) clearInterval()
D) clearTimeout()

Answer 2

D

Question 3

The History object contains a single property, the ____ property, which contains the specific number of documents that have been opened during the current browser session.

A) length
B) size
C) list
D) index

Answer 3

A

Question 4

The getElementsBySelector()method returns a collection of elements matching a specified selector.

Question 5

Which method returns all   elements in a document that match the selector p figure img ?

A) getElementsByTagName( "p figure img" )
B)getElementsByName( "p figure img" )
C)querySelector( " p figure img " )
D)querySelectorAll( " p figure img " )

Question 6

Which results in a node that exists independently of the DOM tree?

A) appendChild()
B)createElement()
C)insertBefore()
D)setting the value of a variable referencing an independent node to null

Question 7

Which method does NOT return a node list or HTML collection?

A) getElementById()
B) getElementsByTagName()
C)getElementsByClassName()
D)getElementsByName()

Question 8

When you open a new web browser window, you can customize its appearance using the ____ argument of the window.open()method.

A) url
B) name
C) options
D) replace

Question 9

The ____ method repeatedly executes the same code after being called only once.

A) setInterval()
B) loadInterval()
C) startInterval()
D) clearInterval()

Question 10

Internet Explorer 8 does not support the textContent property.

Question 11

The objects in the BOM for any given web page depend on the contents of the page.

Question 12

Which is the correct way to reference the href attribute of the element with the id value homeLink ?

A) document.getElementById("homeLink").style.href
B) document.getElementById("homeLink").attr.href
C) document.getElementById("homeLink").attr("href")
D) document.getElementById("homeLink").href

Question 13

Which is the correct way to reference the CSS  font-family property in JavaScript when using dot notation?

A) font-family
B) fontfamily
C) fontFamily
D)font.family

Question 14

The top-level object in the browser object model is the Window object, which represents a web browser window.

Question 15

Which method returns all h1 elements in a document?

A) getElementById("h1")
B) getElementsByTagName( "h1" )
C)getElementsByClassName( "h1" )
D)getElementsByName( "h1" )

Question 16

The ____ object is used to obtain information about the current web browser.

A) Location
B) Navigator
C) History
D) Browser

Question 17

The ____ method is used in JavaScript to execute code after a specific amount of time has elapsed.

A) clearInterval()
B) clearTimeout()
C) setTimeout()
D) startTimeout()

Question 18

In order to make a window the active window, you use the ____ method of the Window object.

A) open()
B) set()
C) focus()
D) active()

Question 19

The ____ object allows you to change to a new web page from within JavaScript code.

A) Navigator
B) Browser
C) History
D) Location

Question 20

The ____ method is used to clear a setInterval()method call.

A) exitInterval()
B) stopInterval()
C) clearInterval()
D) cancelInterval()

Question 22

Name two ways to add a node to the DOM, and explain when you'd use each.

Question 23

The ____________________ object represents a web browser window.

Question 24

The first h2 element in a web page is created with the following tag pair:

. Provide three different examples of code to reference this element using three different methods.

Question 25

Which method returns a single element?

A)getElementsByTagName()
B)getElementsByClassName()
C)querySelector()
D)querySelectorAll()

Question 26

Explain the relationship between the Window object and the  Document object.

Question 27

How can you control a new window from the browser window that created it?

Question 28

The DOM hierarchy is also known as ____.

A) the API
B) the node
C) theDOM tree
D)DHTML

Question 29

A set of connected nodes that are not part of a document is known as a(n)____.

A)node list
B) document fragment
C)HTML collection
D)array

Question 30

Which method adds a node to a parent node before one or more existing child nodes?

A) appendChild()
B)createElement()
C)insertBefore()
D)cloneNode()

Question 31

How can you center a web browser window in the middle of the display area?

Question 32

One way of referring to the Window object is by using the ____________________ property, which refers to the current Window object.

Question 33

Describe the differences between the  setTimeout() and setInterval()methods, and specify the method you use to cancel each.

Question 34

Is the Navigator object commonly used in determining which type of browser a user is running? Why or why not?

Question 35

What is the difference in syntax between referencing a CSS property of an element and referencing an attribute of an element? Give an example of each.

Question 36

What is the difference between the content accessed by the textContent and innerHTML properties?

Question 37

Which method returns the element created by the HTML tag pair

P1P1_E?

A) getElementsByTagName("first")
B) getElementById("first")
C) querySelectorAll("first")
D) getElementsByClassName("first")

Question 38

Each item in the DOM tree is known as a(n)____________________ .

Question 39

For security reasons, you should use the ____________________ property when possible instead of the innerHTML property.

Question 40

The Document object branch of the browser object model is represented by its own object model called the ______________________________.

Question 41

Can you use JavaScript access URLs contained in the History object? If yes, provide code to do so. If no, why not?