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No. If we can accomplish our goals using simple JavaScript, then we should avoid using jQuery. It is because the jQuery library is always xx kilobytes in size, thus there is no use in wasting bandwidth. And because jQuery is built on top of javascript, it has numerous functions that are more complicated than the simple job you can accomplish with javascript. jQuery will also load all dependencies. It will have some speed issues as compared to the javascript code.

Yes, that is possible. With the release of jQuery 1.6, a new method called "jQuery.holdReady(hold)" was added. This function allows you to postpone the execution of the document.ready() event. The document.ready() event is triggered as soon as your DOM is ready, however, there may be occasions when you wish to load extra JavaScript or plugins that you have referenced.

event.stopPropagation() stops the event from propagating up the DOM tree, preventing any parent handlers from being notified of the event. For example, if a link with a click method is linked inside of a DIV or FORM that also has a click method attached, the DIV or FORM click method will not fire.

Below are some of the benefits of using jQuery instead of javascript in ASP.net Web Application - 

• Jquery is well-written optimized javascript code, thus it will execute quicker until we create the same standard optimized javascript code.


• Jquery is javascript code that is succinct, which implies that it requires the least amount of code to do the same functionality as javascript.


• Jquery makes Javascript development faster since much of the functionality is already provided in the library and we only need to access it.


• Because Jquery supports cross-browser compatibility, we save time on supporting all browsers.

Event.PreventDefault is a jQuery event that stops an event from firing when the user clicks on a link or other trigger. It basically stops the default behaviour of the triggers and allows any other event to occur. It is useful for preventing unwanted events from firing when a user clicks on a link or other trigger. This can be useful when you want to prevent users from accidentally clicking on links that open up new windows or tabs.

When you use an event like click or keypress, you can prevent the event from firing by adding the event.preventDefault() method to the event object. When you use event.preventDefault(), the event will not fire unless the user clicks on a link or other trigger.

Event.preventDefault() is only available in jQuery 1.7 and later versions of jQuery.

Example - Assume you're developing an AJAX-based application in which you need to submit form data through AJAX when a button in the form is clicked. So, if you click on a button without preventing it, the button behaves normally and the website reloads. As a result, the other event will not occur when you click the button. So, if we use prevent default there, we can skip the button's default behaviour and instead perform the AJAX event and alter the HTML DOM accordingly.

There are two methods for obtaining a query string using regular expressions.

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  String-based approach: This method aids in the generation of Strings by comparing similar regular expressions using the.replace() function.


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  Regular Express Based Approach: When compared to strings in JavaScript, the regular expression technique is the most powerful method for extracting a query string and pattern. Using the.exec() and.test() methods to compare against patterns. Other String methods include match(), matchAll(), replace(), search(), and split().

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  $(this) is a jQuery object, whereas this is a JavaScript global object reference. We may refer to DOM elements in HTML documents using this.


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  $(this) refers to the parent object, whereas this is a DOM element that, in the case of an array, represents an object with the .each() method, which shows the current iteration.

We use this as an alternative to this.parent() to refer to the parent object in JavaScript. This is more convenient than using this.parent(). We can also use this to refer to other elements in HTML, as in an ul element: 

This is useful when you need to iterate over a list of elements and their children, but you do not want to reference the parent object.

Hosting jQuery on a Content Delivery Network (CDN) improves availability and performance at a reduced cost and with less network traffic, improves latency (the time it takes to send and receive a data packet from the server), and provides a device-specific version of the contents.

CDNs are a great way to host your JavaScript and CSS files. By caching these files, you can reduce the amount of time it takes for your site to load, making it faster and more responsive. This is especially important for sites that serve large amounts of content, such as blogs or e-commerce sites. By using a CDN, you can also reduce the number of load times that occur when visitors access your site. In addition, by hosting your JavaScript and CSS files on a CDN, you can also reduce the amount of bandwidth that is consumed by your site.

Example - It makes it simple to maintain responsiveness for mobile screen sizes, as well as safe storage space for important data or files. 

Caching JavaScript and CSS files on a CDN is an important optimization that should be considered when building a site with a lot of JavaScript and CSS files.

The functionality of jquery.min.js and jquery.js is the same. However, If you are serving a page that contains a lot of JavaScript, it is a good idea to minify it. Minifying JavaScript (jquery.min.js) reduces the size of your file and makes it faster to load on all platforms. Minifying your code also reduces the chances that erroneous code will be rendered as a malicious attack because it makes it more difficult to test. With minified JavaScript, you will get better page performance, faster loading, and shorter wait times for your visitors.

There are also some of the major advantages of the jquery.min.js. - 

• When JS files are minified in a production environment, they load faster and provide faster and better page performance.


• Minifying a script also reduces the size of the file in the server’s temporary directory and browser cache, which results in a faster download and a smaller server response.


• Another advantage of using minified JS is that it removes the need to include any external JS files in the HTML document. This makes it easier to structure the code and easier to edit the code.

• The connect() method of jQuery is a utility function that allows you to create a new jQuery object and pass it to the jQuery object's constructor. This allows you to create a new object with the same functionality as the original object, but without having to manually set up the object's properties. For example, you can pass in an existing jQuery object and it will be automatically set up to use the same properties as the original object.


• When using connect() method, you can pass in a callback function that will be called when the new object is ready. The callback function can be used to perform any additional setup that needs to be done before the new object can be used. 


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  For example - you can set up a data source using the data() method of jQuery. When using connect() method, you can pass in a callback function that will be called when the new object is ready.