We must be aware of the JavaScript application's loading speed while running any script on an HTML page. Performance problems never cause harm to the programme. When we include a tag inside the HTML tag, the programme uses more memory and performs worse. The location on the HTML page where we add our script also affects how quickly the programme loads. Therefore, to enhance the performance of the application, include the defer attribute within the script> element using the syntax . defer attribute loads to promptly free up the necessary resources and boost efficiency. A boolean type attribute ... Read More

First let us understand what unit testing is and how it helps us. One of the numerous varieties of automated testing is unit testing. Unit tests completely isolate and test relatively small portions of the application, comparing the results to the intended results. When unit testing your application, you normally don't link it to external dependencies like databases, the filesystem, or HTTP services. This is referred to as "full isolation." Since they won't fail as a result of issues with all those external services, unit tests can be quicker and more reliable as a result. Individual software units, such as ... Read More

In this article we will learn how to use the TARGET attribute to open a website in a new window using HTML and JavaScript TARGET attribute of HTML A link's opening named frame or window is specified using the Target attribute of the anchor tag. The concluding tag in the HTML content must appear after each commencing tag since the element is paired. Although the href (hypertext reference) element of the anchor tag has several other options, it is required since it contains the URL of the webpage where the link will go when clicked. Syntax ... Read More

The green background image is changed and replaced with any effect or other image using the green screen algorithm, also referred to as the chromakey algorithm. In short, what we're doing is swapping out all of the green pixels in the forward image with their matching counterparts in the background image. Additionally, we need to keep in mind that the size of the output image should match that of the forward image. In the following step, the pixels from the forward image are duplicated into the new image. Rather than copying green pixels, the backdrop image's matching pixels are used. ... Read More

In touch devices, an element sticks when a hover effect is added to it using CSS. This article will teach us how to deal with this problem. On touch devices, there is no hover effect, therefore the button stays in its original state. Without the Use of JavaScript: CSS's media query function can be used to fix the problem. Devices that support hover are those that match the requirement "hover: hover". To ensure that the CSS below is added only on these devices, use media query along with this condition. Only hover-enabled devices will see the added hover effect; touch ... Read More

Scalable Vector Graphic, sometimes known as SVG, is a type of 2D graphic or image file. In order to create visuals, SVG files employ mathematical formulas and a set of guidelines about shapes, lines, and other features. SVGs are simply XML code that specifies how colours should be presented, where each form should appear in respect to other shapes inside a file, and how shapes should be displayed. SVGs and some other vector graphics were significantly different than raster graphics that depend on pixels to convey visual data, like jpegs or png files. The four advantages of using SVG files ... Read More

You'll learn how to use javascript to detect the keystrokes ctrl+v in this article. When a user wishes to paste something into an input field, they have two options: either they can use the context menu by right-clicking on the webpage or they may use their keyboard by pressing the CTRL and V buttons simultaneously. The keydown event's ctrl attribute is used to figure out the key combination that contains "Ctrl." To identify whether "ctrl" is pushed or not during the key event is triggered, it produces a "boolean" value. Syntax event.ctrlKey Return Value true − After pressing ... Read More

You will learn in this post how to use HTML, CSS, and JavaScript to develop an editable div. Whenever you click on an editable div, your browser will automatically create an editable text area where you can make changes to or add new text. The text you've edited will appear as a constant text whenever anyone click elsewhere on your browser after you've finished. Necessary requirements − The concepts of HTML, CSS, and JavaScript should be familiar to you. Developing structure − Make two files: one for JavaScript and the other for HTML. Execute the command that follows to create ... Read More

Let's learn how to modify the colour of the error message in JavaScript while using jQuery form validation in this tutorial. Form validation is the process of verifying the pertinent data that the user has submitted in the input field. Here, we'll demonstrate how to use jQuery to validate a straightforward form with a login, password, and confirmed password. Necessary requirements − The fundamentals of HTML, CSS, JavaScript, and jQuery must be familiar to you. Method To start, you must create an index.html file that contains an HTML form containing input fields for the user name, email address, password, ... Read More

An object-oriented programming language called JavaScript was created to make developing websites more appealing and simple. The majority of the time, JavaScript is used to build dynamic, responsive elements for websites, improving customer experience. The most widely used lightweight, compiled, and interpreted programming language is JavaScript. It is additionally known as web page scripting language. It can be applied to both client-side and server-side programming. The interactions between an HTML/CSS document, or more properly the Document Object Model (DOM), and JavaScript are made simpler by the open-source JavaScript library known as jQuery. By defining the keywords, it makes navigating and ... Read More