Test
Javascript Test
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Preguntas del test (51)
1Which of the following will return a live HTML collection?
- Adocument.querySelector()
- Bdocument.getElementByClassName()
- Cdocument.getElementById()
- Ddocument.querySelectorAll()
2Which method would you use to stop a default action?
- AstopDefault()
- BpreventDefault()
- CendDefault()
- Dyou can’t stop a default action
3During a keydown event, altKey and ctrlKey will repeat if held.
- ATrue
- BFalse
4The Array.from() method will not work in which of the following browsers
- AInternet Explorer
- BGoogle Chrome
- CMicrosoft Edge
- DMozilla Firefox
5An HTML file can contain a reference for an external file. The…
- AJavascript
- BCSS
- CAn image
- DAll of the above
6To add a class to an element without overwriting the other class
- Aelement.classList.add()
- Belement.className
- Celement.classList.contains()
- Delement.class
7What is the property on the event object for a click event…
- AclickedOn
- Bevent
- Cclick
- Drub
8In order to reduce security problems, JavaScript runs in a restrictive environment called a:
- Afirewall
- Bsandbox
- Csean's house
- Dtunnel
9When adding event handler
- Aadd event listener
- Badd event
- Cevent
- Devent listener
10Events are fired on the target element and then each of the target element’s parents.
- Apropagation
- Btargeting
- Ccapturing
- Dobserving
11Leaf nodes can contain...
- AHTML nodes
- BHTML tags
- Ctext content
- Dother elements
12In order to use JavaScript on a web page, there must be a(n) _______ file.
- ACSS
- Bsecurity
- Cimage
- DHTML
13When linking to JavaScript in a web page, the defer attribute will:
- Adownload the JavaScript file and run it right away
- Bdefer is not used with JavaScript
- Cwait until the page is loaded and then download and run the JavaScript file
- Ddownload the JavaScript file but run it after the page is loaded
14How would you edit the background color of the element paragraph?
- Aparagraph.style.backgroundcolor
- Bparagraph.style.background-color
- Cparagraph.backgroundcolor
- Dparagraph.style.backgroundColor
15Which of these is an event?
- Adblclick
- Bclick
- Ckeydown
- DAll of the above
16DOM stand for __________________
- ADocument Object Model
- BDocument Overall Method
- CDocument variable
- DDocument Observer Method
17To select the next child in the DOM you use which of the following?
- Aelement.next.sibling
- Belement.nextElementSibling
- Celement.next
- Delement.nextElementChild
18When would event.button return the number 2 for a mouse button pressed?
- AWhen the left button is pressed
- BWhen no button is pressed
- CWhen the middle button is pressed
- DWhen the right button is pressed
19An event can be ________
- Anever initiated by the user
- Ban interaction with our page
- Ca list of node child
- Dnone of the above
20Using querySelector(), the . symbol will select elements:
- ABy the class
- BBy the tag
- CBy the name
- DBy the ID
21Using querySelector(), the # symbol will select elements:
- ABy the class
- BBy the tag
- CBy the name
- DBy the id
22Which has the highest order of precedence?
- AInternal Stylesheets
- Bthe style property
- CEmbedded Stylesheets
- DInherited styles
23The first thing the browser does when loading a webpage is:
- Asize the HTML file to the screen
- Bdownload the HTML file
- Cload the JavaScript DOM functions to the page
- Dopen a model of the HTML file
24What are the steps of a webpage being displayed?
- Aa request is made when a link is clicked
- Bthe page and its resources are downloaded
- Cjavascript file downloaded and loaded by defer
25event.repeat will return what type of value if a key is held?
- ABoolean
- Bnull
- Cnumber
- DArray
26Which command allows you to add text directly without first creating a text node?
- Ael.textContent
- Bel.appendChild()
- Cel.CreateTextNode()
- Del.setAttribute()
27In HTML, the type attribute is required in the <script> tag
- ATrue
- BFalse
28You have added an event listen to the following code. Which of these will remove…
beta.addEventListener(‘click’, newgame);- Anewgame.removeEventListener(‘click’, alpha);
- Bbeta.removeEventListener();
- Cbeta.removeEventListener(‘click’, newgame);
- DremoveEventListener(‘click’, newgame);
29When using document.querySelectorAll() it returns:
- AA list
- BIndividual objects for each element selected
- CAn array like object
- DAn array
30A URL is used to:
- Adownload the closest match
- Bget email
- Cdetermine what program should download the file
- Duniquely identifies files on the Web
31The second parameter of an addEventListener() accepts a ______________ variable.
- Aevent
- Barray
- Clist
- Dfunction
32The DOM is organized like a _____.
- ACircle
- BBlock
- CTree
- DSquare
33Like HTML, the default character-set for JavaScript is:
- Autf-8
- Bemoji-23
- Cdefer
- Dtype
34When a user releases a key, which event is sent?
- Akeyup
- BshiftKey
- Cspace
- Dkeydown
35If you have a <p> element stored in the variable para and you want to add text, which command should you use?
- Apara.insert(txt)
- Bpara.addChild(txt)
- Cparagraph.add(txt)
- Dpara.appendChild(txt)
36To stop many events that may fire many times in a row, we can use clearTimeout
- ATrue
- BFalse
37You can use the function setTimeout() to schedule a function.
- ATrue
- BFalse
38What is the global variable that contains the DOM?
- Ahead
- Bwindow
- Cbody
- Ddocument
39What is the advantage of HTTPS over HTTP?
- Ait is less expensive
- Bit is encrypted
- Cit is faster
- Dall of the above
40In order to use JavaScript on a webpage, you must include the _____ element
- Asrc
- Bscript
- Cjs
- Dlink
41Which event relates to the action of a keyboard being pressed?
- Akeyclick
- Bkeypress
- Ckeyset
- Dkeybutton
42The scroll event is fired every time the page is scrolled.
- ATrue
- BFalse
43All Javascript code will wait for other code to finish before running
- ATrue
- BFalse
44To add an element as the last child of an element parent you would use
- Aparent.replaceChild()
- Bparent.appendChild()
- Cparent.insertAfter()
- Dparent.addChild()
45A mouseover event is going to fire when the mouse pointer is _ an element
- Ahover overs
- Bclick
- Ctouch
46 If the body of a document contains a paragraph element inside of it, the paragraph is considered to be
- Aa sibling of the body element
- Bnot related to the body element
- Ca parent of the body element
- Da child of the body element
47 You have selected all of the list elements and put them in a variable called items. How would you add the class first to the elements?
- Aitems.add.class(‘first’)
- Bitems.classSet.add(‘first’)
- Citems.class.add(‘first’)
- Dnone of the above
48Which command can either add or remove a class from an element?
- Ael.classList.remove()
- Bel.classList.contains()
- Cel.classList.add()
- Del.classList.toggle()
49When adding an event we should use:
- AaddEvent ()
- Bevent()
- CaddEventListener ()
- DeventListener ()
50When you use document.createTextNode command, what happens?
- AA text node is created and stored in memory
- BA text node is created and inserted into the paragraph element
- CA text node is created and added to the end of the document
- DA text node is created and added to the beginning of the document
51When adding an event we should use:
- AaddEvent ()
- Bevent()
- CaddEventListener ()
- DeventListener ()
Información
- Descripción
- Good luck everyone!
- Autor
- Sean Connell
- Idioma
- English
- Visitas
- 27
- Etiquetas
- Valoración
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