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Web Development Articles
Page 80 of 801
How to find whether all element contains same class or not?
Overview A class in any element defines the type of the data contained in an element. A same class name can be taken by another tag or element also. There is no such property for the class attribute that the class name should be unique. To find whether all the elements contain the same classes or not, can be achieved with the help of HTML, CSS and JavaScript. The HTML provides the layout of the page and the layout for the elements for the same classes and the JavaScript will provide the functionality to check whether all the elements contain ...
Read MoreHow to find width of a div using vanilla JavaScript?
Overview A vanilla JavaScript is a framework of JavaScript, it provides mainly two different methods to find the width of a div using the "offsetWidth" and "clientWidth". Both methods have the ability to find the width of any element on a web page. In this vanilla JavaScript refers to the methods of the JavaScript that are predefined for the developers. It provides cross-platform compatibility. Syntax The Syntax to find the width of the div is given below. These two methods are used to calculate the width of the div. elementHTML.offsetWidth elementHTML.clientWidth elementHTML − It is the div ...
Read MoreHow to find position of HTML elements in JavaScript?
Overview JavaScript provides various methods for the manipulation and to get the information about the HTML elements. From the several methods JavaScript has its own predefined methods which returns the specific coordinates or position of the HTML element. These two methods are offsetLeft and offsetTop, these two methods return the exact position of the HTML elements. JavaScript also provides another function as getBoundingClientRect() this method also provides the same result as the offset method. The getBoundingRect() has four properties as top, left, right and bottom and the offset has only two properties that are left and top. Syntax The ...
Read MoreHow to find class of a clicked element using jQuery?
Overview We can easily find the class of the clicked element, the Jquery provides various methods which return the class name of the element when the element is clicked. The Jquery methods "attr()" and using "this.className" properties helps to find the class of an element. So to learn more about these methods we will be seeing the Examples which will cover both the methods. A class name is an attribute which defines the group or type of the data inside the tag. There can be different tags or elements which can contain the same class names but there in case ...
Read MoreHow to find element by text using jQuery?
Overview The Jquery consists of a predefined method which makes it easy for the developer to build this feature. The Jquery provides a selector Syntax by which we can find any text element. So the ":contains" selector is used for finding the text in any element. To learn fully about this ":contains" selector we will be developing this feature through an Example. Syntax The Syntax for finding the text in an element is given below − $(selector:contains()); selector − The selector in the above Syntax is termed as any element or class or id name which is ...
Read MoreHow to find average color of an image using JavaScript?
Overview The extraction of colors from an image means that the colors which are present in an image in the form of pixels will be extracted, and an average of the pixels of the distinct is calculated in the form of RGB (Red Green Blue) and a new average color will be formed on the basis of the average of the color pixels. So we can achieve this with the help of JavaScript, in the JavaScript there is a property "canvas" which is used to draw an image or any content in the form of pixels. Approach To build this ...
Read MoreHow to find all selected options of HTML select tag?
Overview To get the selected options from a dropbox we will be using the JavaScript library that is Jquery. The Jquery provides the feature to select and find the options in the optimum lines of code. For this we will be using pseudo selector class ":selected" for the single selection and multiple selection. So for this in the single selection we will directly alert the user and in multiple we will be storing the Output in the array then displaying it on the screen. Syntax The Syntax used in this feature is − $("option:selected").text(); option:selected − The ...
Read MoreHow to find all inputs with a value Green and change the text of next sibling span using jQuery?
Overview Using Jquery we can create this feature, as Jquery library provides the methods for changing the span text to the value of the input value. In this feature we should have a prior knowledge of the basic HTML and the Jquery. So the Jquery provides the methods as next() and text(), these two methods play a vital role in building this feature. We will also use a few styling methods to make the change visible from other normal text. Syntax The Syntax used in this feature is − $(selector).next().text("text"); selector − The selector in the above ...
Read MoreHow to find all the elements that are disabled in jQuery?
Overview The disabled elements are the elements which are not usable for the end user. These elements are disabled using the "disable" attribute. So using the JQuery library we can find all the total number of disabled elements in a HTML page. Using the Jquery selector we can find all the disabled elements by passing the ":disabled" pseudo selector. The ":disabled" selector will select all the elements in the top−down approach. This approach will scan all the disabled attributes and will list it out in a variable. Syntax The Syntax used in this approach is − $(":disabled").each(function () { ...
Read MoreHow to find all the children with specified class using jQuery?
Overview Jquery is a library which contains various predefined methods with their specific functionality. So to get all the children elements which contains the specific class with their tags can be achieved with the Jquery children() method. The Jquery children() method takes a single argument as the condition at which the set of data will be returned. As we want to find all the children with the specified class so we will be passing the class name as the argument within the method to find all the specific class. Syntax The Syntax used in this approach is − $(element).children(className); ...
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