Answer & Solution
Answer: Option B
Solution:
Using document fragments batches DOM changes, reducing the number of reflows and repaints, thereby improving performance.
Q
How can you batch DOM changes to improve performance?
Related Questions on Average
Which method detaches elements from the DOM in jQuery?
A). .remove()
B). .hide()
C). .detach()
D). .append()
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
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 fastest jQuery selector?
A). Class selector
B). ID selector
C). Tag selector
D). Attribute selector
What is the effect of using the .append() method inside a loop without caching?
A). Improved readability
B). Improved performance
C). Increased DOM manipulations
D). Reduced memory usage
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 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 advantage of using native JavaScript methods over jQuery methods?
A). Better readability
B). Better browser compatibility
C). Improved performance
D). Easier to use
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