JavaScript Event Handling Quiz
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Question 1/15
Which method is used to detect if an element has lost focus?
Select your answer
Question 2/15
Which event handler is triggered when a form input field is selected?
Select your answer
Question 3/15
What happens if you attach multiple event listeners to the same event?
let button = document.getElementById('myButton');
Select your answer
Question 4/15
Which event is fired when an input field gains focus?
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Question 5/15
Which JavaScript method simulates an event occurring on an element?
let button = document.getElementById('myButton');
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Question 6/15
What is the correct method to stop event propagation?
let button = document.getElementById('myButton');
Select your answer
Question 7/15
What is the method to remove an event listener in JavaScript?
let button = document.getElementById('myButton');
Select your answer
Question 8/15
Which method allows you to trigger a focus event on an element?
let input = document.getElementById('myInput');
Select your answer
Question 9/15
How can you trigger a click event manually in JavaScript?
let button = document.getElementById('myButton');
Select your answer
Question 10/15
How can you detect if a user has changed the value of an input field?
Select your answer
Question 11/15
How can you capture the 'Escape' key press in a keydown event?
Select your answer
Question 12/15
Which event is fired when the DOM has been completely loaded?
Select your answer
Question 13/15
What does the 'this' keyword refer to in an event handler?
<button id="myButton">Click me</button>
Select your answer
Question 14/15
Which event is fired when the browser window is resized?
Select your answer
Question 15/15
What is the correct way to add an event listener for a button click event?
let button = document.getElementById('myButton');
Select your answer
Your Results
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Your Answers
Question 1/15
😊 Your
answer was correct
🙁 Your
answer was incorrect
Which method is used to detect if an element has lost focus?
Available answers
The
blur
event is fired when an element loses focus.
Question 2/15
😊 Your
answer was correct
🙁 Your
answer was incorrect
Which event handler is triggered when a form input field is selected?
Available answers
The
select
event is fired when some text in an input field is selected.
Question 3/15
😊 Your
answer was correct
🙁 Your
answer was incorrect
What happens if you attach multiple event listeners to the same event?
let button = document.getElementById('myButton');
Available answers
All event listeners for a given event are triggered in the order they were added, unless propagation is otherwise interfered with.
Question 4/15
😊 Your
answer was correct
🙁 Your
answer was incorrect
Which event is fired when an input field gains focus?
Available answers
The
focus
event is fired when an element becomes focused.
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
The
dispatchEvent
method is used to trigger an event for the specified event type.
Question 6/15
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answer was correct
🙁 Your
answer was incorrect
What is the correct method to stop event propagation?
let button = document.getElementById('myButton');
Available answers
stopPropagation()
stops the event from bubbling up the DOM tree.
Question 7/15
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answer was correct
🙁 Your
answer was incorrect
What is the method to remove an event listener in JavaScript?
let button = document.getElementById('myButton');
Available answers
removeEventListener
is used to remove a previously attached event listener.
Question 8/15
😊 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
The
focus()
method is used to trigger a focus event on an element.
Question 9/15
😊 Your
answer was correct
🙁 Your
answer was incorrect
How can you trigger a click event manually in JavaScript?
let button = document.getElementById('myButton');
Available answers
You can programmatically trigger a click event using
button.click();
.
Question 10/15
😊 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
The
change
event is used to detect when the value of an input has changed.
Question 11/15
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answer was correct
🙁 Your
answer was incorrect
How can you capture the 'Escape' key press in a keydown event?
Available answers
The 'Escape' key has a keyCode of 27, so you use
event.keyCode === 27
to check for it.
Question 12/15
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answer was correct
🙁 Your
answer was incorrect
Which event is fired when the DOM has been completely loaded?
Available answers
The
DOMContentLoaded
event occurs when the HTML document has been fully loaded and parsed.
Question 13/15
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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
In an event handler,
this
refers to the element that received the event.
Question 14/15
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answer was correct
🙁 Your
answer was incorrect
Which event is fired when the browser window is resized?
Available answers
The
resize
event is triggered when the browser window changes size.
Question 15/15
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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
The correct method is
addEventListener
. It attaches an event handler to the specified event.