Q
How does event delegation improve performance?

Answer & Solution

Answer: Option A
Solution:
Event delegation uses fewer event handlers, improving performance.
Related Questions on Average

Which of the following methods improves performance by reducing the number of reflows?

A). .html()

B). .text()

C). .css()

D). .detach()

Why should you use the latest version of jQuery?

A). To improve compatibility with older browsers

B). To access new features

C). To improve performance and fix bugs

D). To reduce file size

What is the benefit of using the .when() method in jQuery?

A). To handle a single AJAX request

B). To handle multiple AJAX requests concurrently

C). To handle DOM manipulations

D). To handle event delegation

What is the purpose of caching jQuery selectors?

A). To reduce memory usage

B). To improve readability

C). To improve performance

D). To reduce code length

What is the purpose of the debounce function?

A). To improve animation performance

B). To limit the rate at which a function is executed

C). To improve event handling

D). To batch DOM changes

What is the best practice for handling frequent events like scroll or resize?

A). Use .off() to remove handlers

B). Use inline event handlers

C). Use debounce or throttle

D). Use .bind() method

How can you batch DOM changes to improve performance?

A). Use .addClass() and .removeClass()

B). Use document fragments

C). Use inline styles

D). Use .hide() and .show()

What is the fastest jQuery selector?

A). Class selector

B). ID selector

C). Tag selector

D). Attribute selector

How can you optimize AJAX requests for better performance?

A). Use synchronous requests

B). Use POST method for all requests

C). Minimize data transferred

D). Avoid using AJAX

How can you delay the loading of images to improve performance?

A). Use the .load() method

B). Use a lazy load plugin

C). Use the .ready() method

D). Use inline styles