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

Answer & Solution

Answer: Option A
Solution:
To prevent the default behavior of an event in JavaScript, you can use the event.preventDefault() method inside the event handler function. This method stops the browser from executing the default action associated with the event, such as submitting a form or following a link.
Related Questions on Average

Which event occurs when a user submits an HTML form?

A). A. onsubmit

B). B. onmouseover

C). C. onkeydown

D). D. onclick

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()

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

A). A. appendEvent()

B). B. addEventListener()

C). C. attachEvent()

D). D. bindEvent()

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

What is the purpose of parameters in a JavaScript function?

A). A. To return a value from the function

B). B. To define the function's name

C). C. To store variables within the function

D). D. To accept inputs into the function

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

What is the purpose of the onclick attribute in HTML elements?

A). A. To define styles for HTML elements

B). B. To attach event listeners for mouse clicks

C). C. To insert JavaScript code directly into HTML

D). D. To create animations for HTML 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

What is the purpose of the onmouseover event in HTML?

A). A. To detect when an element is hovered over

B). B. To track changes in form inputs

C). C. To determine when an element is loaded

D). D. To handle form submissions

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

A). A. Stops event propagation to parent elements

B). B. Prevents the default behavior associated with an event

C). C. Detaches event listeners from elements

D). D. Clears the event queue