uniquely identifies files on the Web

determine what program should download the file

Changing the way you learn

Question 1

Question

Which of the following will return a live HTML collection?

Answer

document.querySelector()
document.getElementByClassName()
document.getElementById()
document.querySelectorAll()

Question 2

Question

Which method would you use to stop a default action?

Answer

stopDefault()
preventDefault()
endDefault()
you can’t stop a default action

Question 3

Question

During a keydown event, altKey and ctrlKey will repeat if result of Boolean operator is true

Answer

True
False

Question 4

Question

The Array.from() method will not work in which of the following browsers

Answer

Internet Explorer
Google Chrome
Microsoft Edge
Mozilla Firefox

Question 5

Question

An HTML file can contain a reference for an external file. The…

Answer

Javascript
CSS
An image
All of the above

Question 6

Question

To add a class to an element without overwriting the other class…

Answer

element.classList.add()
element.className
element.classList.contains()
element.class

Question 7

Question

What is the property on the event object for a click event…

Answer

clickedOn
event
click
rub

Question 8

Question

In order to reduce security problems, JavaScript runs in a restrictive environment called a:

Answer

firewall
sandbox
sean's house
tunnel

Question 9

Question

When adding event handler

Answer

add event listener
add event
event
event listener

Question 10

Question

Events are fired on the target element and then each of the target element’s parents.

Answer

propagation
targeting
capturing
observing

Question 11

Question

Leaf nodes can contain...

Answer

HTML nodes
HTML tags
text content
other elements

Question 12

Question

In order to use JavaScript on a web page, there must be a(n) _______ file.

Answer

CSS
security
image
HTML

Question 13

Question

When linking to JavaScript in a web page, the defer attribute will:

Answer

download the JavaScript file and run it right away
defer is not used with JavaScript
wait until the page is loaded and then download and run the JavaScript file
download the JavaScript file but run it after the page is loaded

Question 14

Question

How would you edit the background color of the element paragraph?

Answer

paragraph.style.backgroundcolor
paragraph.style.background-color
paragraph.backgroundcolor
paragraph.style.backgroundColor

Question 15

Question

Which of these is an event?

Answer

dblclick
click
keydown
All of the above

Question 16

Question

DOM stand for __________________

Answer

Document Object Model
Document Overall Method
Document variable
Document Observer Method

Question 17

Question

In order to reduce security problems, JavaScript runs in a restricted environment…

Answer

True
False

Question 18

Question

Skip for now

Answer

skip
skip1

Question 19

Question

An event can be ________

Answer

never initiated by the user
an interaction with our page
a list of node child
none of the above

Question 20

Question

Using querySelector(), the . symbol will select elements:

Answer

By the class
By the tag
By the name
By the ID

Question 21

Question

Using querySelector(), the # symbol will select elements:

Answer

By the class
By the tag
By the name
By the id

Question 22

Question

Which has the highest order of precedence?

Answer

Internal Stylesheets
the style property
Embedded Stylesheets
Inherited styles

Question 23

Question

The first thing the browser does when loading a webpage is:

Answer

size the HTML file to the screen
download the HTML file
load the JavaScript DOM functions to the page
open a model of the HTML file

Question 24

Question

What are the steps of a webpage being displayed?

Answer

a request is made when a link is clicked
the page and its resources are downloaded
javascript file downloaded and loaded by defer

Question 25

Question

event.repeat will return what type of value if a key is held?

Answer

Boolean
null
number
Array

Question 26

Question

Which command allows you to add text directly without first creating a text node?

Answer

el.textContent
el.appendChild()
el.CreateTextNode()
el.setAttribute()

Question 27

Question

In HTML, the type attribute is required in the <script> tag

Answer

True
False

Question 28

Question

You have added an event listen to the following code. Which of these will remove… beta.addEventListener(‘click’, newgame);

Answer

newgame.removeEventListener(‘click’, alpha);
beta.removeEventListener();
beta.removeEventListener(‘click’, newgame);
removeEventListener(‘click’, newgame);

Question 29

Question

When using document.querySelectorAll() it returns:

Answer

A list
Individual objects for each element selected
An array like object
An array

Question 30

Question

A URL is used to:

Answer

download the closest match
get email
determine what program should download the file
uniquely identifies files on the Web

Question 31

Question

The second parameter of an addEventListener() accepts a ______________ variable.

Answer

event
array
list
function

Question 32

Question

The DOM is organized like a _____.

Answer

Circle
Block
Tree
Square

Question 33

Question

Like HTML, the default character-set for JavaScript is:

Answer

utf-8
emoji-23
defer
type

Question 34

Question

When a user releases a key, which event is sent?

Answer

keyup
shiftKey
space
keydown

Question 35

Question

If you have a <p> element stored in the variable para and you want to add text, which command should you use?

Answer

para.insert(txt)
para.addChild(txt)
paragraph.add(txt)
para.appendChild(txt)

Question 36

Question

To stop many events that may fire many times in a row, we can use stopPropagation()

Answer

True
False

Question 37

Question

You can use the function setTimeout() to schedule a function.

Answer

True
False

Question 38

Question

What is the global variable that contains the DOM?

Answer

head
window
body
document

Question 39

Question

What is the advantage of HTTPS over HTTP?

Answer

it is less expensive
it is encrypted
it is faster
all of the above

Question 40

Question

In order to use JavaScript on a webpage, you must include the _____.

Answer

src
script
js
link

Question 41

Question

Which event relates to the action of a keyboard being pressed?

Answer

keyclick
keypress
keyset
keybutton

Question 42

Question

The scroll event is fired every time the page is scrolled.

Answer

True
False

	Created by Tommy Phan over 5 years ago

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