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Event Listeners & the Event Object

Event Listeners & the Event Object

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

The video tutorial introduces DOM events, explaining how to add event listeners to elements and handle default behaviors. It covers the use of both named and unnamed functions for event handling and explores the event object in detail, including its properties like target, clientX, clientY, and coordinates. The tutorial emphasizes the importance of understanding event object properties for effective DOM manipulation.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of adding an event listener to a DOM element?

To listen for and respond to user interactions

To change the style of the element

To remove the element from the DOM

To create a new element in the DOM

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method is used to prevent the default behavior of an element?

cancelEvent

stopImmediatePropagation

preventDefault

stopPropagation

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an advantage of using named functions for event handling?

They can only be used with click events

They execute faster than anonymous functions

They are easier to debug and maintain

They automatically prevent default behaviors

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which property of the event object gives the element that triggered the event?

event.type

event.target

event.element

event.currentTarget

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you change the text of a button when an event is triggered?

Using event.target.innerHTML

Using event.target.textContent

Using event.target.innerText

Using event.target.value

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you get a list of all classes associated with an event target?

Using event.target.classes

Using event.target.getClasses

Using event.target.classList

Using event.target.className

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the clientX property of the event object represent?

The X coordinate of the event relative to the screen

The X coordinate of the event relative to the document

The X coordinate of the event relative to the viewport

The X coordinate of the event relative to the element

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