Modern Web Design with HTML5, CSS3, and JavaScript - Adding Event Listeners

This video tutorial covers the basics of using JavaScript to manipulate HTML elements. It begins with selecting elements using querySelector and applying styles to them. The tutorial then explains how to add event listeners to elements, handle events, and use event objects. Advanced techniques such as toggling classes and preventing default actions are also discussed. The video concludes with a focus on mouse events, including mouse enter, leave, down, and up, providing a comprehensive overview of event handling in JavaScript.

What method is used to select all elements with a specific class in JavaScript?

• getElementById

• querySelector

• getElementsByTagName

• querySelectorAll

Which style property is used to make elements appear like buttons?

• padding

• font-size

• border

• background-color

What is the purpose of an event listener in JavaScript?

• To handle user interactions

• To validate forms

• To style elements

• To load external scripts

Which method is used to add an event listener to an element?

• addEventListener

• bindEvent

• setEventListener

• attachEvent

What property of the event object contains the element that triggered the event?

• eventLocation

• eventPath

• eventTarget

• eventType

How can you prevent the default action of an event in JavaScript?

• haltEvent()

• stopPropagation()

• preventDefault()

• cancelEvent()

What method is used to toggle a class on an element?

• setClass

• classList.toggle

• changeClass

• toggleClass

Which event occurs when the mouse pointer enters an element?

• mouseHover

• mouseIn

• mouseOver

• mouseEnter

What event is triggered when the mouse button is released?

• mouseRelease

• mouseClick

• mouseUp

• mouseDown

Which event is used to detect when the mouse leaves an element?

• mouseOut

• mouseLeave

• mouseExit

• mouseAway