Optimizing jQuery code for performance and efficiency Mockest | JQuery

1.

What is the fastest jQuery selector?

A). Class selector B). ID selector C). Tag selector D). Attribute selector

2.

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

Answer & Solution Discuss in Board

3.

How can you minimize DOM manipulation reflows?

A). Use inline styles B). Use CSS classes C). Batch DOM changes D). Avoid using jQuery

Answer & Solution Discuss in Board

4.

Which method detaches elements from the DOM in jQuery?

A). .remove() B). .hide() C). .detach() D). .append()

Answer & Solution Discuss in Board

5.

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

Answer & Solution Discuss in Board

6.

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

Answer & Solution Discuss in Board

7.

What jQuery method is used for event delegation?

A). .on() B). .off() C). .click() D). .bind()

Answer & Solution Discuss in Board

8.

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

Answer & Solution Discuss in Board

9.

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

Answer & Solution Discuss in Board

10.

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

Answer & Solution Discuss in Board

Optimizing jQuery code for performance and efficiency Mocktest

Answer & Solution

Answer & Solution

Answer & Solution

Answer & Solution

Answer & Solution

Answer & Solution

Answer & Solution

Answer & Solution

Answer & Solution

Answer & Solution

COMPANY

Products

OTHERS

Partner