Full Stack Web Development MASTERY Course - Novice to Expert - More on JavaScript Events

The video tutorial covers the interaction with HTML through events, focusing on how events are part of the Document Object Model (DOM) and can trigger JavaScript code. It explains the functionality of the submit button in forms, including how to set a target for form data submission. The tutorial demonstrates using the preventDefault function to stop default actions, such as form submission. It also covers handling double click events and various mouse events like mouse move, mouse over, mouse out, mouse enter, mouse up, and mouse down, explaining their behavior and use cases in web development.

What is the role of events in the Document Object Model (DOM)?

• To handle user interactions

• To style HTML elements

• To create new HTML elements

• To store data

What is the primary purpose of a submit button in an HTML form?

• To reset the form

• To send form data to a backend file

• To change the form's style

• To close the form

How can you add an event listener to an HTML element using JavaScript?

• By using the addEventListener method

• By using the setAttribute method

• By using the createElement method

• By using the appendChild method

What does the preventDefault method do in JavaScript?

• It deletes the event listener

• It changes the event type

• It stops the event from being triggered

• It prevents the default action associated with the event

What is the effect of using both click and dblclick events on the same element?

• It enhances the element's functionality

• It can cause unexpected behavior

• It prevents any event from firing

• It is not possible to use both

Which event is triggered when the mouse is moved over an element?

• mouseout

• mousedown

• mouseover

• click

What happens when a mousemove event is fired?

• The element is double-clicked

• The element is clicked

• The element is right-clicked

• The cursor is moved over the element

Which event occurs when the mouse pointer leaves an element?

• mouseout

• mouseover

• mouseleave

• mouseenter

What is the difference between mouseover and mouseenter events?

• mouseover fires when the pointer leaves the element, mouseenter when it enters

• Both events are identical

• mouseenter fires when the pointer enters the element or its children, mouseover only when it enters the element

• mouseover fires when the pointer enters the element or its children, mouseenter only when it enters the element

Which event is triggered when a mouse button is pressed down on an element?

• dblclick

• click

• mousedown

• mouseup