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Q
Consider the following HTML code: Which JavaScript code adds a click event listener to the button?

Answer & Solution

Answer: Option B
Solution:
The correct way to add a click event listener to the button with the ID myButton is by using the addEventListener() method as shown in Option B. This method ensures proper event handling and allows for attaching multiple event listeners to the same element without overwriting existing ones.
Related Questions on Average

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

Consider the following JavaScript code: document.addEventListener('keypress', function(event) { console.log('Key pressed:', event.key); }); What does this code do?

A). A. Adds a click event listener to the document

B). B. Adds a keypress event listener to the document

C). C. Removes a keypress event listener from the document

D). D. Checks if a key is pressed while hovering over an element

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

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()

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 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

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 purpose of the oninput event in HTML?

A). A. To track changes in form inputs

B). B. To detect mouse movements

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

D). D. To handle form submissions

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()