Answer & Solution
Answer: Option B
Solution:
Lazy load plugins delay loading of images until they are needed, improving initial load performance.
Q
How can you delay the loading of images to improve performance?
Related Questions on Average
How does event delegation improve performance?
A). By using fewer event handlers
B). By using more event handlers
C). By attaching handlers directly to elements
D). By avoiding event handling
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 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 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
Which method detaches elements from the DOM in jQuery?
A). .remove()
B). .hide()
C). .detach()
D). .append()
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 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 minimize DOM manipulation reflows?
A). Use inline styles
B). Use CSS classes
C). Batch DOM changes
D). Avoid using jQuery
What jQuery method is used for event delegation?
A). .on()
B). .off()
C). .click()
D). .bind()