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Introduction to jQuery switchClass()

jQuery switchClass() method used to adds and removes a specific class to matched elements while animating all style changes. The jQuery switchClass() method is a built in method in the jQuery UI library. In simple words the jQuery switchClass() method switch between one CSS class to another CSS class while animating all style changes.

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Syntax and Parameters

The syntax of jQuery with Class() method of jQueryUI version 1.0 is:

switchClass(removeClassName, addClassName [, duration ] [, easing ] [, complete ]);

Parameters:

removeClassName: This parameter specified the names of one or more CSS class which are to be removed and it is passed as a string.

addClassName: This parameter specified the names of one or more CSS class which are to be added to each matched element attribute and it is passed as a string.

duration: This parameter specified the time duration in a millisecond and it is passed as a number or string. The default value of it is 400.

easing: This parameter specified the name of the easing function to be called to the animate() method.

complete: This parameter specified the name of a callback function which is to be called when each element effect is completed.

The syntax of jQuery swithClass() method of jQueryUI version 1.9 support children option also and animate descendant elements also, which is below as –

switchClass(removeClassName, addClassName [, options ]);

Parameters:

removeClassName: This parameter specified the names of one or more CSS class which are to be removed and it is passed as a string.

addClassName: This parameter specified the names of one or more CSS class which are to be added to each matched element attribute and it is passed as a string.

options: This parameter specified the animation settings. Which includes:

duration: This parameter specified the time duration in a millisecond and it is passed as a number or string. The default value of it is 400.

easing: This parameter specified the name of the easing function to be called to the animate() method. The default value of it is swing.

complete: This parameter specified the name of a callback function which is to be called when each element effect is completed.

children: This parameter specified whether the animation applies to all descendants or not of the match elements and it is passed as a Boolean. The default value of it is FALSE.

queue: This parameter specified whether an animation is put in the effects queue or not and it is passed as a Boolean or string. The default value of it is TRUE.

All the above properties are optional.

Examples of jQuery UI switchClass() Method

Next, we write the html code to understand the jQuery UI switchClass() method more clearly with the following example, where the switchClass() method will use to change the style class of the specified element of the selected element, as below.

Example #1

Code:

.s1 { width : 100px; background-color : #ccc; color : blue; } .s2 { width : 200px; background-color : #00f; color : red; } $(document).ready(function() { $( “h1” ).switchClass( “s1”, “s2”, “easeInOutQuad” ); }); });

Output:

Example #2

Code:

.s1 { width: 100px; background-color: #ccc; color : blue; } .s2 { width: 200px; background-color: #00f; color : red; } $(document).ready(function() { $( “h1” ).switchClass( “s1”, “s2”, “fast” ); }); $( “h1” ).switchClass( “s2”, “s1”, “fast” ); }); }); An output of the above code is –

Output:

Example #3

Next example we rewrite the above code where in the jQuery UI switchClass() method use to change the style class with duration parameter, as in the below code.

Code:

.s1 { background-color: #ccc; color : blue; } .s2 { background-color: #00f; color : red; } $(document).ready(function() { $( “h1” ).switchClass( “s1”, “s2”, 3000, “easeInOutQuad”); }); });

Output:

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Parameters And Examples Of Jquery Addclass()

Introduction to jQuery addClass()

In the following article, we will learn about jQuery addClass(). It will be a bit tough to learn jQuery without having knowledge of the JavaScript programming language. jQuery has many inbuilt methods. This method is one of them. By using the addClass() method, we can add specified class or classes to the selected element from the set of matched elements. The class attributes which already exists in this method does not remove them. This method can take one or more class names. To add more than one class, the class names are separated by a space character.

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Syntax and Parameters of jQuery addClass()

In simple words, we can say that the addClass() method is used to add a class or classes for the element(s). The addClass() method syntax in the jQuery. It is an inbuilt method in jQuery. Syntax for jQuery addClass() method is as follows:

Syntax:

$(selector) .addClass(className [ , duration] [, easing][,options])

Parameters:

It contains some parameters; some of the details of the parameters are:

className: The className should be of string type. It can take one or more class names; spaces separate them.

Duration: The duration can be a string or a number. It can be either a time in milliseconds, or it can be preset. The default value of the duration is 400 milliseconds. It can take slow, fast or normal as a string parameter. This helps us to control the slide animation based on our requirements.

Easing: The easing should be of string type. It is used for transition. The default value is swing.

Function: It is an optional parameter that returns the class names. It takes the index position and class name of an element.

Queue: The queue takes the Boolean value. If the Boolean value is true, it indicates whether to place or not to place the animation. If the Boolean value is false, the animation will take place immediately.

Complete: This function is called once the animation is completed on an element.

Children: Children take the Boolean value. It is helpful to determine which descendant to animate.

Examples to Implement jQuery addClass()

This is a simple example of the addClass() method. In this example, we can observe the addClass() method effect on the paragraph. We have passed the two class names in this example; they are a highlight, and main we can see in the code they are separated by space in the addClass() method.

Example #1

Code:

$(document).ready(function(){ $(“p”).addClass(“highlight main”); }); }); .highlight { font-size: 200%; color: white; display: block; border: 5px solid red; } .main { margin: 100px; background:purple; }

Output:

The paragraph content is in normal font size without background and color, as shown in the below figure.

We can observe in the below image that the font size, background color, border, margin, and the display got applied to the paragraph as we mentioned all of them in the addClass() method in the code.

Example #2

This is another example of the addClass() method by using the function.

Code:

$(document).ready(function(){ $(“li”).addClass(function(n){ return “listitem_” + n; }); }); }); p { margin: 8px; font-size: 20px; font-weight: bolder; cursor: pointer; border: 5px solid blue; } .main { background: orange; } .listitem_1, .listitem_3,.listitem_5 { color: Brown; } .listitem_0, .listitem_2 ,.listitem_4{ color: green; } $( this ).addClass( “main” ); });

Output:

Example #3

Code:

$(document).ready(function(){ $(“p”).removeClass(“highlight”).addClass(“main”); }); }); .highlight { font-size: 200%; color: blue; display: block; border: 15px solid Brown; } .main { background-color: violet; }

Output:

These are some of the examples of the addClass() method by using some of the parameters and functions.

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This is a guide to jQuery addClass(). Here we discuss syntax and parameters of jQuery addClass() along with different examples and its code implementation. You may also look at the following articles to learn more –

Syntax And Different Examples Of Jquery Val()

Introduction to jQuery val()

JQuery Val() is a type of method used for the operations related to the values of the elements in an HTML based web page. The two operations where this method can be used are to set the value for a given element or to get the value for a given element. One can also used an already defined and declared function to fetch the element property, for which the val() method can be used to set or get the values. The syntax for this method is ‘$(selector).val()’, where val will have the value as a parameter and sometimes the function details wherever applicable.

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Syntax:

$(selector).val() $(selector).val( value )

This method is used to set the value of a selected element.

$(selector).val( function ( index, currvalue ) )

This method is used to set the value of a selected element by using a function.

Parameters:

Value: The value parameter is not an optional parameter, which is used to specify the set value of the attribute.

function ( index, currvalue ): Function ( index, currvalue ) parameter is an optional parameter, which is used to specify the name of a function to execute and return the set value of the attribute.

Examples for the jQuery val()

Below given are the examples of jQuery val():

Example #1 – Without Parameters

Next, we write the html code to understand the jQuery val ( ) method more clearly with the following example where we set the value attribute of the second and third input element with the value content of the first input element –

Code:

$(document).ready(function() { var cont = $(“input”).val(); $(“input”).val( cont ); });

Output:

Example #2 – Single Select Boxes

Next example code where this method is used to get the form’s elements values. The jQuery val( ) method doesn’t accept any arguments and returns an array containing the value of each selected options in a list else returns a NULL value if no option is selected, as in the below code –

Code:

b { color: red; } p { background-color: yellow; margin: 10px; } function fruitdisplayVals() { var fruitValues = $( “#fruit” ).val(); } $( “select” ).change( fruitdisplayVals ); fruitdisplayVals();

Output:

Example #3 – jQuery val() Method with Single and Multiple Select Boxes

In the next example code, we rewrite the above code for jQuery val() method with single and multiple select boxes –

Code:

b { color: red; } p { background-color: yellow; margin: 4px; } function fruitdisplayVals() { var fruitValues = $( “#fruit” ).val(); } $( “select” ).change( fruitdisplayVals ); fruitdisplayVals();

Output:

Now we can select any single fruit option and multiple vegetable options, the output is –

Example #4 – jQuery val() Method with Parameter

Next example code where the jQuery wrap( ) method accepts a string to set the value of each matched element. As shown in the below example –

Code:

$(document).ready(function(){ $(“input:text”).val(“Set Value”); }); });

Output:

Example #5 – jQuery val() Method with Function as Parameter

This method accepts a function as a parameter and sets the value of each matched element.

Code:

$(document).ready(function(){ $(“input:text”).val( function(n,c){ return c+”Set Value”; }); }); });

Output:

Conclusion

This method is used to get the value of the html element or to set the value of the html element. Syntax for this are –

$(selector).val( )

$(selector).val( value )

$(selector).val( function ( index, currvalue ) )

Value used to specify the set value of the attribute. function ( index, currvalue ) used to specify the name of a function to execute and return the set value of the attribute.

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Jquery Ui Course (8 Courses Bundle, Online Certification)

About JQuery UI Course

Further details are provided below.

Course Name Online JQuery UI Course

Deal You get access to all videos for the lifetime

Hours 19+ Video Hours

Core Coverage Learn about topics related to jQuery right from its installation to creating a demo app

Course Validity Lifetime Access

Eligibility Anyone serious about learning Jquery JavaScript Library

Pre-Requisites None

What do you get? Certificate of Completion for the course

Certification Type Course Completion Certificates

Verifiable Certificates? Yes, you get verifiable certificates for each8 course, Projects with a unique link. These link can be included in your resume/Linkedin profile to showcase your enhanced skills

Type of Training Video Course – Self Paced Learning

Software Required None

System Requirement 1 GB RAM or higher

Other Requirement Speaker / Headphone

JQuery UI Course Curriculum

Goals

Objectives

Course Highlights

Project Highlights

Goals

With this JQuery UI Training, we aim to make the trainees efficient at handling user interfaces, widgets, effects, themes built on top of the jQuery JavaScript Library. We ensure that our comprehensive course structure will help students in building efficient web applications.

Objectives

The objective is to make you understand jQuery UI in depth. The widgets, effects, interactions, utilities, etc. With jQuery, one will notice that the programming task is easier and is quite SEO friendly. There is a jQuery Mobile Training course offered by our course at EDUCBA. Interesting and industry-related projects on eCommerce with jQuery HTML/CSS, project on Bootstrap, project on jQuery on the services, and solutions of website.

Course Highlights

The course structure has been devised very carefully by the instructors. The students will not face any issue at covering the topics as the lessons have been broken down with a simple example and the instructor follows quite a graceful pace with the course. In case of any doubt, there is a 24×7 open helpline available from our end to help you out with your doubts.

In jQuery UI Tutorials, you will be learning about user interactions, themes, effects, widgets, etc. You will get an insight into a highly interactive web application and understand why jQuery UI sits as the perfect fit for pulling such an application in the real world.

jQuery fundamentals will take you into the depth of the fundamentals. You will learn about the highlights of using jQuery in the application. There is a proper guide provided regarding the installation and also a demo app will be created by you. Important topics like selectors, attribute selectors and jQuery basic filters will be covered in this end.

In jQuery Mobile training, you will have a clear perception of the intro table of content screen1, JQ mobile pages, JQ mobile buttons, JQ Mobile navigation bar and panels, JQ Mobile Tables, and Grids, JQ Mobile Forms, themes, events.

Project Highlights

Projects aids in understanding and give more hands-on which helps to grasp the subject matter better. The projects are updated and assembled by keeping all the industry relevance in mind. We have 3 projects in the jQuery package and with each project completion, it clarifies and enhances your foothold on jQuery concepts.

Project on eCommerce Shop using jQuery, HTML, CSS focuses on teaching about the basic layout, you will gain more knowledge on image navigator and descriptions tabs. This is a basic level project and it will introduce you to all the fundamental concepts, including jargon and terminologies.

Project on Bootstrap helps to create an e-commerce website. You will be guided through making header, menu, section, grids, etc. You will have built an e-commerce website all by yourself at the end of this project section.

Project on jQuery involving around Services and Solutions website. Building this project will help you comprehend a lot of topics better related to DOM Manipulation, DOM removal of elements, DOM replacement, banner-rotator, carousel slider, banner-slider, full-width, slider, grid slider, image gallery, partial-visible slider, phot-slider, responsive slider, vertical slider, Code-CSS, jQuery-code-menu, jQuery-code-midsection, jQuery-code-midsection, jQuery-code-footer. A large bulk of the topics is covered in this section of the module.

By religiously following the course material, the person taking up the training will gain an edge over others. With so many openings for jQuery in the market, it will indeed help one land a good job.

JQuery UI Course – Certificate of Completion

What is JQuery UI?

Which Skills will you learn in this Course

Pre-requisites

There are certain things that you should be aware of to learn JQuery. The very first among these is JavaScript. As JQuery is purely based on JavaScript, having a good idea about this will help to learn JQuery. The basic concepts of JavaScript like calling function and using the component for specific purposes will endorse JQuery training. The next thing is the basic understanding of programming languages. As JQuery leverages the logic to facilitate the development of complex UI, having a good understanding of programming fundamentals will help the trainees to learn JQuery with ease.

Target Audience

This JQuery UI Course is intended to serve everyone willing to learn JQuery either to learn or to implement it somewhere. The professional who is working in web application UI development can be the best target audience for this course. They will be learning how to develop complex UI so that the web application can offer a good user experience. The students who are willing to learn how to develop UI efficiently can be the best target audience for this course. They will be learning everything from beginners’ point of view and will also be focusing on how to implement JQuery from scratch. The web designing trainer can also leverage this JQuery UI Training. They can learn various new concepts of JQuery that they can use to train their students efficiently.

JQuery UI Course – FAQ’s How long it may take to learn JQuery?

Based on the familiarity of the trainee with Javascript, it depends on how long they may take to learn JQuery. For the folks who are having working experience with Javascript can learn this technology within a month while someone new to Javascript will take around two months to finish this JQuery UI Training. Though the course could be completed in a week, it may take time to master JQuery as the trainees will require to practice the concepts and examples detailed in this course over and over to be proficient in JQuery.

Why should I prefer this JQuery UI Training?

Sample Preview

Career Benefits

JQuery is used very extensively throughout the world to facilitate the development of complex applications to provide a simple and interactive user interface. Due to its need in the applications, the JQuery professionals or the UI develops are in high demand. All the organizations that either get the applications developed inhouse or the organization that develops the applications for other businesses frequently look for the folks who are proficient in JQuery. The online job portals are full of opportunities for JQuery developers and the count of opportunities is expected to keep on increasing due to the urge of organizations to get their application developed in a manner that offers good user experience and meanwhile requires less server interaction. If you develop the user interface, you may want to take this course and get yourself an edge that could help you in professional growth.

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How To Use Jquery Getjson()?

Introduction to jQuery getJSON()

JSON stands for JavaScript Object Notation. JSON is very popular for the way to exchange data and by using this we can display, style, and modify the data. getJSON () method in JQuery is used to load or to get the JSON encoded data. In some of the cases when we request the server it will return the JSON string. The resulting string will be available to the callback function of the getJSON () method. The getJSON () method will be using the GET HTTP request. In simple words, getJSON() method is used for getting the JSON-formatted data.

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Syntax and Parameters

Syntax:

$(selector).getJSON(url[, data][, function])

Parameters:

It takes three parameters. The details of the parameters are:

URL: It is of string type and it is mandatory to give or send the URL to the getJSON () method. In this, we will specify the url to which it has to send the request for.

Data: It is of string type or the plain object and it is an optional parameter. In this, the request it will be sent to the server.

Function: It is an optional parameter. It is a function that will get executed if the request is successful. It again consists of three additional parameters. They are data, status, and xhr.

Data: It is of the plain object type. The data which is returned from the server will be here.

Status: It is of string type. It contains the text status. It may be success, error, notmodified, timeout, or parsererror.

Xhr: It is of jqXHR type. It contains the XML HTTP Request. It has jqXHR.done() it indicates the success. The jqXHR.fail() it indicates error and it has jqXHR.always().

How to use jQuery getJSON()?

Before we call the getJSON () method the URL which we need to send to the method for that we need to create the json file.

We need to first install npm.

To install npm we need to execute this command in the command prompt : npm install –global json-server

After executing the above command we have to create and name the file and save the file as filename.json. (filename can be anything according to your requirement.)

After saving the file execute the following command in the command prompt:

Json-server –watch filename.json

By following the above procedure I have created a file and named it is as db.json.

The content present in the chúng tôi file is as follows:

Code:

{ "posts": [ { "id": 1, "title": "json-server", "author": "ABC" } ], { "id": 1, "postId": 1 } ], "profile": { "name": "Raju" } }

Now we are using this URL in our program. How we are using this URL in the getJSON () method and how we are getting data will be shown in the below examples.

Examples of jQuery getJSON()

Following are the example are given below:

Example #1

This is a simple example of the getJSON () method. In this example, we can observe how the getJSON () method will work.

Code:

$(document).ready(function(){ $.each(event, function(i, value){ $(“div”).html(value); }); }); }); }); Example for the getJSON() method

Output:

In the above program we can observe that we have passed the URL to the getJSON () it will be redirected to the file which we have created and gets the data from the file.

Example #2

This is another example of the getJSON () method.

Code:

$(document).ready(function(){ $.each(event, function(i, value){ $(“div”).append(value + ” “); }); }); }); });

Output:

Example #3

Code:

$(document).ready(function() { }); }); }); Example for the getJSON () method

Output:

We can see in the above code we have passed this URL to the getJSON () method. So it will get the data displays the content in the output.

These are some of the example programs which will help you to understand the getJSON() method.

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Explain Handler Method In Es6

ES6 is referred to as ECMAScript 6. ES6 is the sixth version of ECMAScript, which was released in 2023 and is sometimes known as ECMAScript 2023. ECMAScript was developed to standardize JavaScript. Further in this article, we are going to discuss Handler Methods in ES6 in detail.

Introduction to ES6

As we Know ES6 (ECMAScript 6) is introduced for the standardization of JavaScript. It is a programming language and in ES6 we don’t have to need to write a number of lines of code or we can say we have to write less and accomplish more. JavaScript follows the ES6 standard, which outlines all the requirements, specifics, and rules that must be included in a JavaScript implementation.

ES6 has several wonderful new features like Modules, template strings, class destruction, arrow functions, etc.

Handler Methods in ES6

In the above we have discussed the ES6, now we are going to discuss the Handler. Handler is an object and its properties are to function. Here function defines the behaviour of the proxy’s actions when a task is executed on it.

In practically every way, an empty handler will provide a proxy that behaves precisely like the destination. You can alter some parts of the behaviour of the proxy by defining any one of a predefined group of functions on the handler object. For instance, by specifying get(), you can offer a customized property accessor for the target.

Syntax of Handler

We have seen the basics of the handler methods of ES6, now let’s move to the syntax of the handler method −

new Proxy(target, handler)

Here we are using Proxy Constructor() which is used to create a proxy object and take two parameters i.e. Target and Handler. Here Target defines as the object that Proxy will wrap. Any kind of object, such as a native array, a function, or even another proxy, can be the object. And Handler is defined as the object whose properties are operations that specify how the proxy will act in response to a request.

Different types of Handler methods In ES6

There are many handler methods in ES6 (ECMAScript 6). Now we will be going to discuss some of them. Handler Methods are frequently referred to as traps because handler methods block calls to the underlying target object.

handler.apply()

Through a proxy, the result of a function call is nothing else just the value returned by this method which is why this function is also known as the trap for the function call.