Hello friends, In this article, we will discuss about JQuery Interview Questions and Answers. we will give you the top JQuery Interview Questions and Answers.
What is jQuery?
jQuery is not a programming language but a well-written JavaScript code. It is a JavaScript code, which does document traversing, event handling, Ajax interactions, and Animations.
Why jQuery is needed?
jQuery is needed for the following list: Used to develop browser compatible web applications Improve the performance of an application Very fast and extensible Ul related functions are written in minimal lines of codes
Whether jQuery HTML work for both HTML and XML documents?
No, jQuery HTML only works for HTML documents not for XML Documents.
What are the methods used to provide effects?
Some of the effects methods are:
- Show()
- Hide()
- ToggIe()
- FadeIn()
- FadeOut()
What is the advantage of using minimized version jQuery?
The efficiency of the web page increases when minimized version jQuery is used.min.js file will be more than 50% less than the normal js file. Reduction in the file size makes the web page faster.
ls jQuery is a JavaScript or JSON library file?
jQuery is a library of JavaScript file and it consists of DOM, event effects and the Ajax functions. jQuery is said to be a single JavaScript file.
Which operating system is more compatible with jQuery?
Mac, Windows, and Linux are more compatible with the jQuery.
What is the difference between find and children’s methods?
Find method is used to find all levels down the DOM tree but children find a single level down the DOM tree.
What is jQuery connect?
A ‘jQuery connect’ is a plugin used to connect or bind a function with another function. Connect is used to execute a function from any other function or plugin is executed.
How to use to connect?
Connect can be used by downloading jQuery connect file from jQuery.com and then include that file in the HTML file. Use $.connect function to connect a function to another function.
What are the basic selectors in jQuery?
Following are the basic selectors in jQuery:
- Element ID
- CSS Name
- Tag Name
- DOM hierarchy
What is the use of jQuery.data method?
jQuery.data methods are used to associate the data with the DOM nodes and the objects. This data method makes the jQuery code clear and concise.
What is the use of each function in jQuery?
Each function is used to iterate each and every element of an object. It is used to loop DOM elements, arrays, and object properties.
Which sign is used as a shortcut for jQuery?
Dollar ($) sign is used as a shortcut for jQuery.
Is jQuery is a client or server scripting?
jQuery is a client scripting.
What is the script build up jQuery?
jQuery is a Javascript file and it is a single javascript file that contains common DOM, event effects and Ajax functions.
How can we debug jQuery?
There are two ways to debug jQuery: Debugger keyword
Add the debugger to the line from where we have to start debugging and then run Visual
Studio in Debug mode with the F5 function key.
Insert a breakpoint after attaching the process
What is the use of jQuery.ajax method()?
jQuery.ajax method is used for asynchronous HTTP requests.
ls jQuery is a replacement of JavaScript?
No, jQuery is not a replacement of JavaScript.
What are the advantages of jQuery?
Following are the advantages of jQuery:
Just a JavaScript enhancement Coding is simple, clear, reusable Removal of writing more complex conditions and loops
What is the use of jQuery.data() method?
jQuery data method is used to associate data with DOM nodes and JavaScript objects. This method will make a code very concise and neat.
Where jQuery code is getting executed?
jQuery code is getting executed on a client browser.
Why jQuery is better than JavaScript?
jQuery is a library used for developing Ajax application and it helps to write the code clean and concise. It also handles events, animation, and Ajax support applications.
Where jQuery code is getting executed?
jQuery code is getting executed on a client browser.
What are the types of selectors in jQuery?
There are three types of selectors in jQuery:
- CSS Selector
- XPath Selector
- Custom Selector