Hello guys, if you are thinking of learning jQuery, one of the best JavaScript libraries for client-side development, and looking for some excellent free resources like books, tutorials, and online courses, then you have come to the right place. In this article, I am going to share some of the best free jQuery courses from Udemy and, Pluralsight which you can take to learn this impressive JavaScript library. In the past, I have also shared some free books and tutorials on jQuery, which complements these courses. You can also take a look at them while learning different parts of jQuery.
3 ways to check if checkbox is selected in jQuery - Example Tutorial
So, you have a checkbox and you want to check if its selected or not at runtime using jQuery. If that's what you want then continue reading. A checkbox is an HTML element with type="checkbox" and checked property is used to find out whether a checkbox is selected or not. There are several ways to find if your checkbox has this property or not in jQuery e.g. by using :checked, a pseudo selector or by using is() jQuery function or by using prop() function which is available from jQuery 1.6 onward. In this article, we will see examples of these approaches to check if a check box is checked or not.
Top 21 jQuery interview Questions and Answers
Hello guys, if you are preparing for web developer interviews then preparing for jQuery questions can benefit you. While many people will say that jQuery is dead but its not dead and I am still working with projects which are using jQuery for little to big things. That's why its important to know about basic jQuery concepts and interview questions based upon that. In the past, I have shared several JavaScript and web development interview questions and in this article I am going to share jQuery questions like what is $() etc. What are selectors? how does they work etc. You can use this questions to quickly revise key jQuery concepts for interviews. So what are we waiting for, let's see the basic jQuery interview questions for web developers.
How to enable or disable form elements using jQuery? Examples
In last couple of tutorials you have learned how to get all selected checkbox and radio buttons, and in this tutorial, you will learn how to enable/disable form elements using jQuery. A form element e.g. a textfield, radio buttons and checkbox, all represented using input tag can be enabled or disabled by adding an attribute called "disabled". It's similar to "checked" attribute we have seen for checkbox and radio buttons. If this attribute is not present then element is enable, but if this attribute is present then you can use disabled=true to disable the form element and disabled=false to enable the form elements as shown in our example. Like previous example of checking/unchecking checkbox, you can use prop() jQuery function to enable/disable form element if you are running on jQuery 1.6 or higher version and attr() function if you are running on jQuery 1.5 or lower version.
How to handle click event in jQuery - Example
In the world of web development, interactivity is key to creating engaging user experiences. One fundamental aspect of interactivity is the ability to respond to user actions, such as clicks. jQuery, a fast and concise JavaScript library, has long been a favorite among developers for simplifying common tasks, including event handling. You can handle click event in jQuery by using event handlers. You can bind event handlers to any element by using on() method or click() method. The event handler is nothing but a function containing some code which will be executed when user will click on the element. For example, if user clicks on a button then color of button might changed to show on and off behavior. All this can be implemented by handling click event in jQuery.
Difference between child and descendent selectors in jQuery in CSS?
Main difference between descendant and child selector in jQuery or CSS is that descendant selector selects all dom elements whether they are its direct children or not, on the other hand child selector only select direct childrens. Its very easy to understand if you know meaning of descendant and child. For example, my daughter is both my child and descendant but my granddaughter is not my child but descendant. Same definition work in both CSS and jQuery world Since jQUery got his selector from CSS itself, any difference between descendant and child selector which is valid for CSS is also valid for jQuery, unless otherwise stated. Now, lets understand this in terms of DOM elements
How to Fix Reference Error: $ is not defined in jQuery and JavaScript [Solved]
Hello JavaScript developer, if you are wondering how to fix the Reference Error $ is not defined while using jQuery then you have come to the right place. "Reference Error: $ is not defined" is one of the common JavaScript errors which come when you try to use $, which is a shortcut of jQuery() function before you load the jQuery library like calling $(document).ready() function. "ReferenceError: XXX is not defined" is a standard JavaScript error, which comes when you try to access a variable or function before declaring it. Since jQuery is also a JavaScript library, you must first include the declaration of the jQuery function or $() before you use it.
How to get the value of a checkbox using jQuery ? Example Tutorial
Suppose you have a web page with a checkbox like a registration page where you have a checkbox about reading terms and conditions. When the user clicks the submit button, your job is to validate whether that particular checkbox is checked or not? How do you do that? How do you get the value of the checkbox to see if it's checked or not? Well, you can use a pseudo-selector ":checked" to see if that checkbox is checked or not. This selector returns true if the user has clicked and kept the checkbox checked; false otherwise. You can get the checkbox either by class or id and then you can call the is(":checked") method, as shown in our example.
How to get and set Value of a text field using jQuery? Example Tutorial
Hello guys, In the last jQuery tutorial, you learn how to dynamically add a text file into a form, and in this tutorial, I will show you how to get and set the value of the text field using jQuery. This is a common task and there is a good chance that you have already done something similar in your project. Our requirement is simple, the text field initially contains the value "username" and as soon as the user clicks on it to enter a username, it should become clear. After the user has entered the username of the user id, he can click on the submit button, and then your program should print the username and text field again becomes clear.
10 Example of jQuery Selectors for Beginners
I am primarily a Java developer but I have done a lot of work with Java web applications including Servlet, JSP, and JavaScript on the client side. It was difficult for me to perform client-side validation using JavaScript but ever since I come to know about jQuery, I simply love to do more validation and other stuff on the client side. The jQuery gives you immense power to do things with HTML pages and half of that power comes from its CSS-like selector engine, which allows you to select any element or group of elements from the HTML page and then do things with them e.g. changes their style or behavior. For example, you can grab the divs and hide them, you can grab the buttons and make them clickable, and so on.
5 ways to redirect a web page using JavaScript and jQuery
When an HTTP request for one page automatically goes to another page then it is called redirection. The redirection of a web page is used for different reasons like redirecting to a different domain e.g. when you move your website from one URL to another URL or redirecting to a more recent version of a page you are looking at it. There are many ways to redirect a web page and different web technologies provide different ways like Java provides sendRedirect() and forward() method for redirection.
How to get current Page URL, Path, and hash using jQuery? Example, Tutorial
Hello guys, in the last jQuery tutorial, I have taught you how to set and get values from a text field using jQuery and in this jQuery tutorial, you will learn about how to get the current URL and hash values, like something which starts with # (hash) letter. For example, in the URL http://localhost:8080/HelloWeb/test.html#ixzz2PGmDFlPd, URL is http://localhost:8080/HelloWeb/test.html and the hash value is ixzz2PGmDFlPd. This is important information and you will often find needing hash values from the current URL while working on a web application.
How to use jQuery First time? HelloWorld Example
What is jQuery
jQuery is nothing but a JavaScript library that comes with rich functionalities. It's small and faster than many JavaScript codes written by an average web developer. By using jQuery we can write less code and do more things, it makes web developer's tasks very easy. In simple words, jQuery is a collection of several useful methods, which can be used to accomplish many common tasks in JavaScript. A couple of lines of jQuery code can do things that need too many JavaScript lines to accomplish. The true power of jQuery comes from its CSS-like selector, which allows it to select any element from DOM and modify, update or manipulate it.
jQuery is nothing but a JavaScript library that comes with rich functionalities. It's small and faster than many JavaScript codes written by an average web developer. By using jQuery we can write less code and do more things, it makes web developer's tasks very easy. In simple words, jQuery is a collection of several useful methods, which can be used to accomplish many common tasks in JavaScript. A couple of lines of jQuery code can do things that need too many JavaScript lines to accomplish. The true power of jQuery comes from its CSS-like selector, which allows it to select any element from DOM and modify, update or manipulate it.
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