Q
Which scenario is suitable for using event delegation?

Answer & Solution

Answer: Option A
Solution:
Event delegation is suitable for scenarios where you are dealing with dynamically added elements or a large number of elements. It ensures consistent event handling and better performance, especially in applications with dynamic content or a large number of elements.
Related Questions on Average

What is the primary advantage of using event delegation in web development?

A). Simplifies event handling by attaching handlers directly to individual elements.

B). Ensures events are captured on dynamically added elements.

C). Increases the complexity of event handling logic.

D). Requires manual refreshing of the page whenever new elements are added.

How do you specify the child elements to which the event should be delegated in jQuery?

A). By providing a CSS selector for the child elements.

B). By listing the child elements explicitly.

C). By using regular expressions to match child elements.

D). By specifying the child elements' IDs.

Which jQuery method provides better performance for event delegation: .on() or .click()?

A). .on()

B). .click()

C). Both methods provide similar performance.

D). It depends on the browser being used.

How does event delegation contribute to better performance in web applications?

A). By reducing the number of event handlers attached to individual elements.

B). By increasing the number of event handlers attached to individual elements.

C). By requiring manual refreshing of the page whenever new elements are added.

D). By preventing events from bubbling up the DOM tree.

How does event delegation help in handling events on dynamically added table rows?

A). By attaching event handlers to the parent table element.

B). By attaching event handlers directly to the dynamically added table rows.

C). By manually refreshing the page whenever new rows are added.

D). By using regular expressions to match table rows.

What happens if the parent element specified for event delegation is removed from the DOM?

A). The event delegation mechanism will no longer work for child elements.

B). The child elements will inherit the event handlers of the parent element.

C). The child elements will trigger the event handlers directly.

D). The event will be captured by the browser's default event handler.

How does event delegation simplify event handling in web development?

A). By attaching event handlers to parent elements instead of individual elements.

B). By requiring manual refreshing of the page whenever new elements are added.

C). By removing events from the DOM altogether.

D). By triggering events programmatically.

How does event delegation help in handling dynamically added DOM elements?

A). By attaching event handlers to parent elements, ensuring consistent handling.

B). By removing event handlers from the DOM altogether.

C). By binding event handlers directly to dynamically added elements.

D). By refreshing the page whenever new elements are added.

When is event delegation particularly useful in web development?

A). When events need to be triggered programmatically.

B). When dealing with a static DOM structure.

C). When handling events on elements that are dynamically added or removed.

D). When preventing events from bubbling up the DOM tree.

What is the purpose of using event delegation?

A). To handle events on elements that are dynamically added to the DOM.

B). To prevent events from bubbling up the DOM tree.

C). To trigger events programmatically.

D). To remove events from the DOM completely.