17814340
Descripción
Test por Tommy Phan, actualizado hace más de 1 año
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Creado por Tommy Phan
hace alrededor de 5 años
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Pregunta 1
Pregunta
Which of the following will return a live HTML collection?
Respuesta
-
document.querySelector()
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document.getElementByClassName()
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document.getElementById()
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document.querySelectorAll()
Pregunta 2
Pregunta
Which method would you use to stop a default action?
Respuesta
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stopDefault()
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preventDefault()
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endDefault()
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you can’t stop a default action
Pregunta 3
Pregunta
During a keydown event, altKey and ctrlKey will repeat if result of Boolean operator is true
Respuesta
-
True
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False
Pregunta 4
Pregunta
The Array.from() method will not work in which of the following browsers
Respuesta
-
Internet Explorer
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Google Chrome
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Microsoft Edge
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Mozilla Firefox
Pregunta 5
Pregunta
An HTML file can contain a reference for an external file. The…
Respuesta
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Javascript
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CSS
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An image
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All of the above
Pregunta 6
Pregunta
To add a class to an element without overwriting the other class…
Respuesta
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element.classList.add()
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element.className
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element.classList.contains()
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element.class
Pregunta 7
Pregunta
What is the property on the event object for a click event…
Respuesta
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clickedOn
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event
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click
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rub
Pregunta 8
Pregunta
In order to reduce security problems, JavaScript runs in a restrictive environment called a:
Respuesta
-
firewall
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sandbox
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sean's house
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tunnel
Pregunta 9
Pregunta
When adding event handler
Respuesta
-
add event listener
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add event
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event
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event listener
Pregunta 10
Pregunta
Events are fired on the target element and then each of the target element’s parents.
Respuesta
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propagation
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targeting
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capturing
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observing
Pregunta 11
Pregunta
Leaf nodes can contain...
Respuesta
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HTML nodes
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HTML tags
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text content
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other elements
Pregunta 12
Pregunta
In order to use JavaScript on a web page, there must be a(n) _______ file.
Respuesta
-
CSS
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security
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image
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HTML
Pregunta 13
Pregunta
When linking to JavaScript in a web page, the defer attribute will:
Respuesta
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download the JavaScript file and run it right away
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defer is not used with JavaScript
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wait until the page is loaded and then download and run the JavaScript file
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download the JavaScript file but run it after the page is loaded
Pregunta 14
Pregunta
How would you edit the background color of the element paragraph?
Respuesta
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paragraph.style.backgroundcolor
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paragraph.style.background-color
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paragraph.backgroundcolor
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paragraph.style.backgroundColor
Pregunta 15
Pregunta
Which of these is an event?
Respuesta
-
dblclick
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click
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keydown
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All of the above
Pregunta 16
Pregunta
DOM stand for __________________
Respuesta
-
Document Object Model
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Document Overall Method
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Document variable
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Document Observer Method
Pregunta 17
Pregunta
In order to reduce security problems, JavaScript runs in a restricted environment…
Respuesta
-
True
-
False
Pregunta 18
Pregunta
Skip for now
Respuesta
-
skip
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skip1
Pregunta 19
Pregunta
An event can be ________
Respuesta
-
never initiated by the user
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an interaction with our page
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a list of node child
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none of the above
Pregunta 20
Pregunta
Using querySelector(), the . symbol will select elements:
Respuesta
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By the class
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By the tag
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By the name
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By the ID
Pregunta 21
Pregunta
Using querySelector(), the # symbol will select elements:
Respuesta
-
By the class
-
By the tag
-
By the name
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By the id
Pregunta 22
Pregunta
Which has the highest order of precedence?
Respuesta
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Internal Stylesheets
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the style property
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Embedded Stylesheets
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Inherited styles
Pregunta 23
Pregunta
The first thing the browser does when loading a webpage is:
Respuesta
-
size the HTML file to the screen
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download the HTML file
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load the JavaScript DOM functions to the page
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open a model of the HTML file
Pregunta 24
Pregunta
What are the steps of a webpage being displayed?
Respuesta
-
a request is made when a link is clicked
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the page and its resources are downloaded
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javascript file downloaded and loaded by defer
Pregunta 25
Pregunta
event.repeat will return what type of value if a key is held?
Respuesta
-
Boolean
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null
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number
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Array
Pregunta 26
Pregunta
Which command allows you to add text directly without first creating a text node?
Respuesta
-
el.textContent
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el.appendChild()
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el.CreateTextNode()
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el.setAttribute()
Pregunta 27
Pregunta
In HTML, the type attribute is required in the <script> tag
Respuesta
-
True
-
False
Pregunta 28
Pregunta
You have added an event listen to the following code. Which of these will remove…
beta.addEventListener(‘click’, newgame);
Respuesta
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newgame.removeEventListener(‘click’, alpha);
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beta.removeEventListener();
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beta.removeEventListener(‘click’, newgame);
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removeEventListener(‘click’, newgame);
Pregunta 29
Pregunta
When using document.querySelectorAll() it returns:
Respuesta
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A list
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Individual objects for each element selected
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An array like object
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An array
Pregunta 30
Pregunta
A URL is used to:
Respuesta
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download the closest match
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get email
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determine what program should download the file
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uniquely identifies files on the Web
Pregunta 31
Pregunta
The second parameter of an addEventListener() accepts a ______________ variable.
Respuesta
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event
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array
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list
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function
Pregunta 32
Pregunta
The DOM is organized like a _____.
Respuesta
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Circle
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Block
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Tree
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Square
Pregunta 33
Pregunta
Like HTML, the default character-set for JavaScript is:
Respuesta
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utf-8
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emoji-23
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defer
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type
Pregunta 34
Pregunta
When a user releases a key, which event is sent?
Respuesta
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keyup
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shiftKey
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space
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keydown
Pregunta 35
Pregunta
If you have a <p> element stored in the variable para and you want to add text, which command should you use?
Respuesta
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para.insert(txt)
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para.addChild(txt)
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paragraph.add(txt)
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para.appendChild(txt)
Pregunta 36
Pregunta
To stop many events that may fire many times in a row, we can use stopPropagation()
Respuesta
-
True
-
False
Pregunta 37
Pregunta
You can use the function setTimeout() to schedule a function.
Respuesta
-
True
-
False
Pregunta 38
Pregunta
What is the global variable that contains the DOM?
Respuesta
-
head
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window
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body
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document
Pregunta 39
Pregunta
What is the advantage of HTTPS over HTTP?
Respuesta
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it is less expensive
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it is encrypted
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it is faster
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all of the above
Pregunta 40
Pregunta
In order to use JavaScript on a webpage, you must include the _____.
Respuesta
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src
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script
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js
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link
Pregunta 41
Pregunta
Which event relates to the action of a keyboard being pressed?
Respuesta
-
keyclick
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keypress
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keyset
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keybutton
Pregunta 42
Pregunta
The scroll event is fired every time the page is scrolled.
Respuesta
-
True
-
False
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