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jQuery can simply be interpreted as the most advanced JavaScript framework which is used for performing high-level applications which include feature-rich, fast, and lightweight framework which assists in to through the HTML DOM, add Ajax interaction, build animations, manipulating the page content, modify the alignment and render cool UI effect. This is a client-side scripting language.
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The difference between jQuery and JavaScript can simply be explained.
JavaScript can simply be interpreted as a high-level application language whereas, jQuery can be interpreted as a library that is built within the JavaScript language & helps in the better functioning of JavaScript.
jQuery can be interpreted as an internally built library that is being used in JavaScript. And jQuery is strictly been designed with the functionality of client-side scripting. jQuery is not compatible with server-side scripting.
In order to get begin with jQuery, all that one needs to do at the beginning is to make a reference to its complete library. After this, you will be having access to all the application files which are present within the library. jQuery's latest version can now get downloaded from jQuery.com.
jQuery is a highly programmed internal library for the better functioning of JavaScript. It handles a number of applications and its prominence can never be ignored. The following list will be depicting the reasons for why is the need to use jQuery?
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jQuery has a set of methods implying which we can expect to provide different effects within the system. Some of the jQuery methods include
With the minimized version of jQuery, the efficiency of the webpage can be greatly improved. The effectiveness of the webpage which is having a minimized version of jQuery will be a lot better than the effectiveness of the webpage which is having a normal js file.
This is why most of web pages are nowadays found to have a minimized version of jQuery.
jQuery is a highly advanced library application that extensively is used in the following scenarios:
jQuery connect can simply be interpreted as a plug-in that is used to connect or bind one function to the another. This will be helpful for executing the fro any other function or the plug-in is executed.
jQuery Ajax method makes use of four different parameters which include
Including jQuery in a page can be done with the help of the following ways.
Just like they are used in the CSS, both ID selector and Class selector are used for the same functioning.
In order to explain the functioning of both the concepts in simpler words, the ID selector uses ID while the class selector makes use of a class to select the different elements.
In the case where you are needed to select only one element then we have to go with the ID selector. And if you want to select a group of elements, then we have to go with the class selector.
The animate function is extensively being used in jQuery. It is an advanced concept that is well received by the audience. Well, the main feature of the animation function in jQuery is to apply the custom animation effect to different elements.
The syntax for this function is as follows
Syntax:
$(selector).animate({params}, [duration], [easing], [callback])
Here,
In order to help the system to overcome the conflicts between the different libraries and frameworks the jQuery no-conflict option given by jQuery. This concept is really advanced which has been developed over recent times. In the case of any conflicts which arise between the libraries and frameworks using this jQuery.noConflict function will help in overcoming all the conflicts.
1. In jQuery, there are three different applications applying which we can avail the fade effect.
The fade effect can be availed by using the functions which are fadeIn, fadeOut and fadeTo.
2. The opacity of elements gets changed with animation through the effect of these methods.
The syntax for the fading effect includes
Syntax:
$(selector).fadeIn(speed,callback)
$(selector).fadeOut(speed,callback)
$(selector).fadeTo(speed,opacity,callback)
“speed” can be one among the following values: “slow”, “fast”, “normal” or milliseconds.
“opacity” is used to specify the capacity of fading to give opacity.
“callback” is the function with the help of which we can call an action upon the completion of fading.
The struts2 jQuery plug-in is used to:
For example:
Result Div
The advantages of using truts2 jQuery are:
1. It greatly reduces the extent of coding needed to be done for a particular action.
2. It also supports ajax form validation.
3. The readability levels of the code will be very high and so it will become much easier to perform the debugging.
Information of an element can be stored in the simple javascript by simply adding a domain object model property to the element. This results in the rising of issues such as leakage of memory in the browsers.
But in the case of jQuery, the user does not need to be bothered by the memory management issues.
For example: Storing and retrieving data related to an element:
$(‘#myDiv’).data(‘keyName’, { foo : ‘bar’ });
$(‘#myDiv’).data(‘keyName’); // { foo : ‘bar’ }
The procedure of extracting a query string with regular expressions can be done in two ways.
1. The approach of String-based:
It is considered to be the simplest way in use for extracting a query string with regular expressions. This method is carried ahead by making the utilisation of the .replace() method to function.
For example :
var data = string.replace("http://localhost/view.php?", "");
The above procedure will be fine but it has some flexible issues.
2. Regular expression approach:
This is the most powerful method for extracting a query string and the pattern must be used that seeks about the question mark among the string. When done, the JS regular expressions are delimited
The jQuery library has two different versions Development and Production. The other name for the deployment version is minified version.
Considering the functionality, both the files are much similar to each other. Being smaller in size, the .min.js gets loaded quickly saving the bandwidth.
The term CDN relates to the concept of Content Delivery Network. In general, CDN can be interpreted as a large system of servers that are deployed in multiple data centres across the internet.
CDN is mainly aimed at delivering the content to the end-users by enabling them to have high availability and high performance.
The benefits of CDN are quite effective in relation to the working functionality of jQuery.
Some of the benefits of the CDN include
The event.preventDefault() method function is to stop the default action of an element from taking place or to halt the default action from happening.
The main differentiating factor of onload() and document.ready() is that
At max, a page supports the existence of only one onload function, & all the other onload functions will be getting terminated
While coming to the document.ready function, a page can have more than one document.ready function.
Also, the document.ready function is called when the DOM gets loaded and whereas the onload function gets called only when the DOM images get loaded on the page.
In general, jQuery is considered to be far better than JavaScript. jQuery can be interpreted as an application for developing Ajax application and helps in simplifying the code & the code readability will also be good.
jQuery also supports the creation of animations and delivers such high-level functionalities.
There are three types of selectors in jQuery:
The concept of grouping can simply be explained as whenever the same declaration gets shared by more than one selector they get separated by a common separated list.
This helps in greatly reducing the size of the CSS and helps it in making it become more readable.
In order to stop all the queued animations and to help them place in their final state the .finish() method is used. This method was introduced in jQuery 1.9.
The .finish() method will be quite similar to .stop(true, true). It helps in clearing the queue & thereby helps the animations to enter into their end state. In .finish() it also causes the CSS property of all queued animations to jump to their end values, as well.
The latest version (when this post is written) of jQuery is 1.10.2 or 2.0.3. jQuery 2.x has the same API as jQuery 1.x but does not support Internet Explorer 6, 7, or 8.
We can write browser-specific code by simply making use of jQuery.browser property. This property contains flags for the user agent, read from the navigator.userAgent.
This property was excluded from jQuery 1.9.
Ans: By using $.type(Object) which returns the built-in JavaScript type for the object.
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Ravindra Savaram is a Technical Lead at Mindmajix.com. His passion lies in writing articles on the most popular IT platforms including Machine learning, DevOps, Data Science, Artificial Intelligence, RPA, Deep Learning, and so on. You can stay up to date on all these technologies by following him on LinkedIn and Twitter.