What
is jQuery?
jQuery is not a programming language
but a well written JavaScript code. It is a JavaScript code, which do 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
·
UI
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()
·
Toggle()
·
FadeIn()
and
·
FadeOut()
What
is the advantage of using minimized version of jQuery?
Efficiency of web page increases
when minimized version of 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.
Is
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.
How
can we include jQuery library in ASP.Net project?
Download the jQuery library from
jQuery.com and include that reference in the asp.net page.
Which
command will give a version of jQuery?
The command $.ui.version returns
jQuery UI version.
In
what scenarios jQuery can be used?
jQuery can be used in following
scenarios:
·
Apply
CSS static or dynamic
·
Calling
functions on events
·
Manipulation
purpose
·
Mainly
for Animation effects
What
is the difference between find and children methods?
Find method is used to find all
levels down the DOM tree but children find 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 function from any other function or plugin is executed.
How
to use 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 features of jQuery, has been used in web applications?
jQuery uses features like Sliding,
File uploading and accordian in web applications.
What
are the browser related issues for jQuery?
Browser compatibility of jQuery
plugin is an issue and needs lot of time to fix it.
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.
What
are the basic selectors in jQuery?
Following are the basic selectors in
jQuery:
·
Element
ID
·
CSS
Name
·
Tag
Name
·
DOM
hierarchy
Can
we call C# code behind using jQuery?
Yes, we can call C# code from jQuery
as it supports .net application.
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.
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.
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.
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.
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.
Whether
our own specific characters are used in place of $ in jQuery?
Yes, We can use our own variable in
place of $ by suing the method called no Conflict () method.
var sample = $.noConflict()
What
are the four parameters used for jQuery Ajax method?
The four parameters are
·
URL –
Need to specify the URL to send the request
·
type
– Specifies type of request(Get or Post)
·
data
– Specifies data to be sent to server
·
Cache
– Whether the browser should cache the requested page
What
is the use of jQuery filter?
The jQuery filter is used to filter
the certain values from the object list based on the criteria. Example is to
filter certain products from the master list of products in a cart website.
Which
program is useful for testing jQuery?
QUnit is used to test jQuery and it
is very easy and efficient.
What
is CDN?
CDN is abbreviated as Content
Distribution network and it is said to be a group of companies in different
location with network containing copies of data files to maximize bandwidth in
accessing the data.
What
are the two types of CDNs?
There are two types of CDNs:
·
Microsoft
– Load jQuery from Ajax CDN
·
Google
– Load jQuery from Google libraries API
Which
sign is used as a shortcut for jQuery?
Dollar ($) 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 by jQuery?
jQuery is a Javascript file and it
is 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 F5 function key.
·
Insert
a break point after attaching the process
What
are all the ways to include jQuery in a page?
Following are the ways to include
jQuery in a page:
·
Local
copy inside script tag
·
Remote
copy of jQuery.com
·
Remote
copy of Ajax API
·
Local
copy of script manager control
·
Embedded
script using client script object
What
is the use of jQuery.ajax method ()?
jQuery.ajax method is used for
asynchronous HTTP requests.
Where
can we download JQuery?
jQuery javascript can be downloaded
from jQuery official website – www.jquery.com
Is
jQuery is a replacement of JavaScript?
No, jQuery is not a replacement of
JavaScript.
What
is called chaining?
Chaining is used to connect multiple
events and functions in a selector.
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
Whether
C# code behind can be called from jQuery?
Yes, we can call C# code behind from
jQuery.
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.
What
is the difference between onload() and document.ready()?
In a page, we can have only one
onload function but we can have more than one document.ready function.
Document.ready function is called when DOM is loaded but onload function is
called when DOM and images are loaded on the page.
What
is the use of jQuery each function?
jQuery each function is used to loop
through each and every element of the target jQuery object. It is also useful
for multi element DOM, looping arrays and object properties.
How
method can be called inside code behind using jQuery?
$.ajax can be called and by
declaring WebMethod inside code behind using jQuery.
Which
is the fastest selector in jQuery?
ID and Element are the fastest
selectors in jQuery.
What
is the slowest selector in jQuery?
Class selectors are the slowest
selectors in jQuery.
Where
jQuery code is getting executed?
jQuery code is getting executed on a
client browser.
What
is the method used to define the specific character in place of $ sign?
‘NoConflict’ method is used to
reference a jQuery and save it in a variable. That variable can be used instead
of Sign.
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.
What
are the types of selectors in jQuery?
There are three types of selectors
in jQuery:
·
CSS
Selector
·
XPath
Selector
·
Custom
Selector