JavaScript Events

This video tutorial introduces the concept of events in JavaScript, explaining how user actions and application occurrences can be detected and handled. It covers setting up HTML elements, adding event listeners, and implementing button functions to change text size. The tutorial also explores older event handling methods, mouse over events, and the properties of the event object. Finally, it demonstrates handling keyboard events, emphasizing the importance of understanding events for writing event-driven JavaScript code.

What is an example of an event in JavaScript?

• Writing a function

• Double-clicking an object

• Declaring a variable

• Creating a loop

What is the purpose of creating references to HTML elements in JavaScript?

• To delete them

• To change their content

• To detect and handle events on them

• To style the elements

Which method is used to add an event listener to a button in JavaScript?

• setEventListener()

• addEventListener()

• attachEvent()

• bindEvent()

What does the arrow function notation in JavaScript help with?

• Declaring variables

• Writing more concise function expressions

• Styling elements

• Creating loops

How can you detect a mouseover event in JavaScript?

• By using the load event

• By using the keydown event

• By using the mouseover event

• By using the click event

What information can the event object provide?

• The event type and target element

• The event duration

• The event's HTML structure

• The event's CSS properties

Which property of the event object indicates if the Shift key was pressed?

• shiftPressed

• isShift

• shiftKey

• keyShift

What does the keydown event in JavaScript detect?

• A page load

• A mouse click

• A key being pressed and held down

• A key being released

Why is event-driven programming important in JavaScript?

• It enhances CSS styling

• It simplifies variable declarations

• It enables code to respond to user interactions

• It allows for synchronous code execution

Which event type would you use to detect a key being pressed and released?

• click

• keyup

• keypress

• keydown