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 fastest jQuery selector?
A). Class selector
B). ID selector
C). Tag selector
D). Attribute selector
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 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
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
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
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
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 the advantage of using native JavaScript methods over jQuery methods?
A). Better readability
B). Better browser compatibility
C). Improved performance
D). Easier to use