Part 4 of the jQuery Interview Questions series dives deeper into advanced concepts, focusing on performance optimization, event delegation, plugin development, AJAX handling, and best practices for scalable front-end development. This section is designed to assess real-world problem-solving skills and in-depth knowledge of how jQuery works behind the scenes.
31. What are the features of jQuery, has been used in web applications?
jQuery uses features like Sliding, File uploading and accordian in web applications.
32. What are the browser related issues for jQuery?
Browser compatibility of jQuery plugin is an issue and needs lot of time to fix it.
33. Whether we need to add jQuery file in both Master and Content page?
jQuery file should be added to the Master page and can use access from the content page directly without having any reference to it.
34. What are the basic selectors in jQuery?
Following are the basic selectors in jQuery:
35. What is the use jQuery.data method?
jQuery.data methods is used to associate the data with the DOM nodes and the objects. This data method makes the jQuery code clear and concise.
36. What is the use of each function in jQuery?
Each function is used to iterate each and every element of an object. It is used to loop DOM elements, arrays and the object properties.
37. What is the difference between size and length of jQuery?
Size and length both returns the number of element in an object. But length is faster than the size because length is a property and size is a method.
38. Can we add more than one ‘document.ready’ function in a page?
Yes, we can add more than one document.ready function in a page. But, body.onload can be added once in a page.
39. What is the use of jQuery load method?
jQuery load method is a powerful AJAX method which is used to load the data from a server and assign the data into the element without loading the page.
40. Whether our own specific characters are used in place of $ in jQuery?
Yes, We can use our own variable in place of $ by using the method called no Conflict () method.
var sample = $.noConflict()
