Answer:- JQuery is the JavaScript library that is designed to simplify HTML DOM tree manipulation and traversal, as well as event handling, Ajax, and CSS animation.

Answer:- 1. Ease of use: It is easier to use when compared to the standard javascript and other libraries. 2. It has the ability to keep the code clear, simple, readable, and reusable. 3. Large library: It has a lot of functions when compared to javascript. 4. Great documentation and tutorials: the jQuery website has a lot of tutorials that are required for beginners. 5. It has JavaScript enhancement without the overhead of learning new syntaxes. 6. Ajax support: It lets us develop the templates easily.

Answer:- jQuery selectors will allow us to select and manipulate HTML elements. We use the jQuery selectors to find or select the HTML elements that are based on the id, name, types, classes, attributes, values of attributes, and many more. It is usually based on the existing CSS Selectors, and it has some custom selectors also.

Answer:- jQuery is not a programming language; instead, we can say it is a cross-platform JavaScript library. There are many JavaScript libraries available such as MooTools, Knockout, or Angular, and jQuery is one of the most popular among them.

Answer:- We can say that jQuery is a library of JavaScript files, and it contains DOM event effects and Ajax functions.

Answer:- No, the jQuery HTML works only for HTML documents, and not for XML Documents.

Answer:- JavaScript: • JavaScript is a language for programming. • Here, we have to write an extra code or move around to have cross-browser compatibility. • It is verbose as one has to write own scripting code, which is often time-consuming. jQuery: • It is a JavaScript library, a framework that will help us to use JavaScript to simplify common web tasks. • It has an inbuilt feature of cross-browser compatibility. • It is concise, and there is no need to write much code as scripting already exists.

Answer:- Since jQuery is only a library of JavaScript, it cannot replace JavaScript. All the jQuery code is JavaScript, but jQuery does not include all the JavaScript code. jQuery is only optimized to do common scripting functions with lesser lines of code.

Answer:- • empty(): It removes all the content and the child elements from the selected element. This method will not remove the selected elements. • detach(): It removes all child elements with the selected elements. However, it keeps all the data and the event handlers of the removed elements. This method is only preferred when we want to remove elements but to keep a copy of the removed elements, which can be reused later. • remove(): It removes all child elements with the selected element. In this method, one can restore all the data but not the event handlers of the removed elements from DOM. All data and events related to elements will be removed.

Answer:- 1. It improves the performance of an application. 2. It will facilitate you to write minimal lines of code for the UI-related functions. 3. jQuery is very easy to learn and use. 4. It is very fast and extensible. 5. It provides cross-browser support.

Answer:- The CSS() method in jQuery is used to set or return one or more style properties for selected elements. When it is used to return the properties: This method will return the specified CSS property value of FIRST matched elements.

Answer:- In JS, $ is commonly used as a selector function. In jQuery, the $ function does more than just select things, though. One can pass it to a selector to get the collection of matched elements from the DOM. One can pass it as a string of HTML to turn into the DOM element, which can then inject into the document.

Answer:- In jQuery, the events are the actions that are detected by the web application. They are mainly used to create dynamic web pages. An event will show the exact moment when something happens—examples of events: A mouse click.

Answer:- 1. Linux 2. Windows 3. Mac