Answer & Solution
Answer: Option A
Solution:
Event delegation uses fewer event handlers, improving performance.
Q
How does event delegation improve performance?
Related Questions on Average
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
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
Which of the following methods improves performance by reducing the number of reflows?
A). .html()
B). .text()
C). .css()
D). .detach()
How can you create a promise in jQuery?
A). Using the .then() method
B). Using the .done() method
C). Using the .promise() method
D). Using the .fail() method
How can you optimize the performance of event handlers?
A). By using the .bind() method
B). By using the .live() method
C). By using event delegation
D). By using inline event handlers
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
How can you cache AJAX responses in jQuery?
A). By setting cache: false
B). By setting cache: true
C). By using the .promise() method
D). By using the .then() method
What jQuery method is used for event delegation?
A). .on()
B). .off()
C). .click()
D). .bind()
How can you minimize DOM manipulation reflows?
A). Use inline styles
B). Use CSS classes
C). Batch DOM changes
D). Avoid using jQuery
What is event delegation?
A). Binding events to each child element
B). Binding events to a parent element
C). Using inline event handlers
D). Using anonymous functions