Loading... Login Loading... Register

JavaScript Event Handling Quiz

Want to learn more than this quiz offers you? Have a look at my Frontend web development courses.

Create an account and save your quiz results

Login and save your results

First Name *

Last Name *

Email *

Password *

Confirm Password *

I agree to the Terms of Service & Privacy Policy.

Add me to your newsletter.

Question 1/15

Which event is fired when the DOM has been completely loaded?

Select your answer

initialize

ready

DOMContentLoaded

load

Question 2/15

Which of the following is NOT a valid way to attach an event handler in JavaScript?

let button = document.getElementById('myButton');

Select your answer

button.setEvent('click', myFunction);

button['click'] = myFunction;

button.onclick = function() { alert('clicked'); };

button.addEventListener('click', myFunction);

Question 3/15

Which event will fire when you right-click on an element?

Select your answer

rightclick

press

contextmenu

mousedown

Question 4/15

Which event would you use to execute a function after a user stops scrolling?

Select your answer

postScroll

scroll

endScroll

stopScroll

Question 5/15

Which JavaScript method simulates an event occurring on an element?

let button = document.getElementById('myButton');

Select your answer

button.emitEvent('click');

button.fire('click');

button.triggerEvent('click');

button.dispatchEvent(new Event('click'));

Question 6/15

How can you detect if a user has changed the value of an input field?

Select your answer

input.addEventListener('reset', function() { ... });

input.addEventListener('change', function() { ... });

input.addEventListener('focus', function() { ... });

input.addEventListener('blur', function() { ... });

Question 7/15

Which event is triggered when you move the mouse pointer onto an element?

Select your answer

onhover

mouseenter

hover

mouseover

Question 8/15

What is the correct way to add an event listener for a button click event?

let button = document.getElementById('myButton');

Select your answer

button.onClick('click', function() { alert('Button clicked!'); });

button.addEventListener('click', function() { alert('Button clicked!'); });

button.onclickEvent('click', function() { alert('Button clicked!'); });

button.setEventListener('click', alert('Button clicked!'));

Question 9/15

Which method allows you to trigger a focus event on an element?

let input = document.getElementById('myInput');

Select your answer

input.trigger('focus');

input.setFocus();

input.onFocus();

input.focus();

Question 10/15

Which event is used to detect when the browser can begin to render a document?

Select your answer

render

load

startRender

DOMContentLoaded

Question 11/15

What attribute can you use to execute JavaScript code when an event occurs?

<button id="myButton">Click me</button>

Select your answer

onevent

click

onclick

script

Question 12/15

What event is commonly used to update a page when the window is closed?

Select your answer

exit

beforeunload

unload

Question 13/15

When does the 'input' event trigger?

Select your answer

When the input field is focused.

Only when the input field loses focus after editing.

When any input value changes, regardless of if the change is committed.

When the form is submitted.

Question 14/15

What is the correct method to stop event propagation?

let button = document.getElementById('myButton');

Select your answer

event.stopImmediatePropagation();

event.cancelPropagation();

event.prevent();

event.stopPropagation();

Question 15/15

What does the 'this' keyword refer to in an event handler?

<button id="myButton">Click me</button>

Select your answer

The button element that triggered the event.

The event object.

The parent element of the button.

The window object.

Your Results

You did not answer any questions correctly.

Your Answers

Question 1/15

😊 Your answer was correct 🙁 Your answer was incorrect

Which event is fired when the DOM has been completely loaded?

Available answers

initialize

ready

DOMContentLoaded

load

The

DOMContentLoaded

event occurs when the HTML document has been fully loaded and parsed.

Question 2/15

😊 Your answer was correct 🙁 Your answer was incorrect

Which of the following is NOT a valid way to attach an event handler in JavaScript?

let button = document.getElementById('myButton');

Available answers

button.setEvent('click', myFunction);

button['click'] = myFunction;

button.onclick = function() { alert('clicked'); };

button.addEventListener('click', myFunction);

setEvent

and

button['click']

are not valid ways to set an event handler in JavaScript.

Question 3/15

😊 Your answer was correct 🙁 Your answer was incorrect

Which event will fire when you right-click on an element?

Available answers

rightclick

press

contextmenu

mousedown

The

contextmenu

event is fired when the right mouse button is clicked on an element and can be used to display a custom context menu.

Question 4/15

😊 Your answer was correct 🙁 Your answer was incorrect

Which event would you use to execute a function after a user stops scrolling?

Available answers

postScroll

scroll

endScroll

stopScroll

The

scroll

event is fired continuously while scrolling, so you would use a debounce function to execute after scrolling stops.

Question 5/15

😊 Your answer was correct 🙁 Your answer was incorrect

Which JavaScript method simulates an event occurring on an element?

let button = document.getElementById('myButton');

Available answers

button.emitEvent('click');

button.fire('click');

button.triggerEvent('click');

button.dispatchEvent(new Event('click'));

The

dispatchEvent

method is used to trigger an event for the specified event type.

Question 6/15

😊 Your answer was correct 🙁 Your answer was incorrect

How can you detect if a user has changed the value of an input field?

Available answers

input.addEventListener('reset', function() { ... });

input.addEventListener('change', function() { ... });

input.addEventListener('focus', function() { ... });

input.addEventListener('blur', function() { ... });

The

change

event is used to detect when the value of an input has changed.

Question 7/15

😊 Your answer was correct 🙁 Your answer was incorrect

Which event is triggered when you move the mouse pointer onto an element?

Available answers

onhover

mouseenter

hover

mouseover

The

mouseover

event is triggered when a mouse pointer is moved onto an element.

Question 8/15

😊 Your answer was correct 🙁 Your answer was incorrect

What is the correct way to add an event listener for a button click event?

let button = document.getElementById('myButton');

Available answers

button.onClick('click', function() { alert('Button clicked!'); });

button.addEventListener('click', function() { alert('Button clicked!'); });

button.onclickEvent('click', function() { alert('Button clicked!'); });

button.setEventListener('click', alert('Button clicked!'));

The correct method is

addEventListener

. It attaches an event handler to the specified event.

Question 9/15

😊 Your answer was correct 🙁 Your answer was incorrect

Which method allows you to trigger a focus event on an element?

let input = document.getElementById('myInput');

Available answers

input.trigger('focus');

input.setFocus();

input.onFocus();

input.focus();

The

focus()

method is used to trigger a focus event on an element.

Question 10/15

😊 Your answer was correct 🙁 Your answer was incorrect

Which event is used to detect when the browser can begin to render a document?

Available answers

render

load

startRender

DOMContentLoaded

The

DOMContentLoaded

event triggers when the HTML has been completely loaded and parsed, but external resources such as images may not be completely loaded.

Question 11/15

😊 Your answer was correct 🙁 Your answer was incorrect

What attribute can you use to execute JavaScript code when an event occurs?

<button id="myButton">Click me</button>

Available answers

onevent

click

onclick

script

The

onclick

attribute is used to specify JavaScript code to run when the button is clicked.

Question 12/15

😊 Your answer was correct 🙁 Your answer was incorrect

What event is commonly used to update a page when the window is closed?

Available answers

exit

beforeunload

unload

The

beforeunload

event is triggered before a page is unloaded and is commonly used to trigger save operations.

Question 13/15

😊 Your answer was correct 🙁 Your answer was incorrect

When does the 'input' event trigger?

Available answers

When the input field is focused.

Only when the input field loses focus after editing.

When any input value changes, regardless of if the change is committed.

When the form is submitted.

The

input

event is triggered immediately when the value of an input element is changed by the user.

Question 14/15

😊 Your answer was correct 🙁 Your answer was incorrect

What is the correct method to stop event propagation?

let button = document.getElementById('myButton');

Available answers

event.stopImmediatePropagation();

event.cancelPropagation();

event.prevent();

event.stopPropagation();

stopPropagation()

stops the event from bubbling up the DOM tree.

Question 15/15

😊 Your answer was correct 🙁 Your answer was incorrect

What does the 'this' keyword refer to in an event handler?

<button id="myButton">Click me</button>

Available answers

The button element that triggered the event.

The event object.

The parent element of the button.

The window object.

In an event handler,

this

refers to the element that received the event.