Q
What does the preventDefault() method do in JavaScript event handling?

Answer & Solution

Answer: Option B
Solution:
The preventDefault() method in JavaScript event handling prevents the default behavior associated with an event, such as submitting a form, following a link, or executing a browser's default action. It allows developers to control how events are handled and customize the behavior based on specific requirements.
Related Questions on Average

Which of the following correctly defines a JavaScript function?

A). A. function addNumbers(num1, num2) { return num1 + num2; }

B). B. function = addNumbers(num1, num2) { return num1 + num2; }

C). C. function addNumbers(num1 + num2) { return num1 + num2; }

D). D. function addNumbers(num1, num2) => { return num1 + num2; }

In JavaScript, what is the purpose of the addEventListener() method?

A). A. To create inline event handlers

B). B. To attach event listeners to HTML elements

C). C. To remove event listeners from HTML elements

D). D. To bind event handlers to parent elements

Consider the following JavaScript code: let greet = function(name) { return 'Hello, ' + name + '!'; }; What type of function is greet in this code?

A). A. Named function

B). B. Anonymous function

C). C. Arrow function

D). D. Generator function

Which statement accurately describes JavaScript event bubbling?

A). A. It refers to the downward propagation of events from parent elements to child elements.

B). B. It refers to the upward propagation of events from child elements to parent elements.

C). C. It refers to the simultaneous firing of multiple events on the same element.

D). D. It refers to the automatic removal of event listeners after an event is triggered.

What is the primary purpose of JavaScript functions?

A). A. To style web pages

B). B. To provide structure to HTML elements

C). C. To create reusable code blocks

D). D. To define CSS styles for HTML

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

A). A. By using the event.preventDefault() method inside the event handler function

B). B. By using the event.stopPropogation() method inside the event handler function

C). C. By using the event.stopPropagation() method inside the event handler function

D). D. By using the event.defaultPrevented property inside the event handler function

Which method is used to remove an event listener from an HTML element in JavaScript?

A). A. removeEventListener()

B). B. detachEvent()

C). C. removeEvent()

D). D. clearEventListener()

What is the purpose of an event in JavaScript?

A). A. To add styles to HTML elements

B). B. To handle user interactions and browser actions

C). C. To define function names

D). D. To create animations on web pages

Which event occurs when a user submits an HTML form?

A). A. onsubmit

B). B. onmouseover

C). C. onkeydown

D). D. onclick

Which event is triggered when a user clicks on an HTML element?

A). A. onhover

B). B. onsubmit

C). C. onload

D). D. onclick