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In this article, we will learn how to display a warning message before leaving the web page with unsaved changes using javascript with the help of the “beforeunload” event listener. When working on web applications or forms of any kind, it becomes necessary to provide a warning message to users before they leave a page with unsaved changes. This can prevent accidental data loss and improve the overall user experience. Let’s understand how we can implement this with the help of some examples − Example 1 In this example, we will have a form with multiple input elements and ... Read More
In this article, we will learn how to display the tag name of the clicked element using jQuery, and with the help of click event listeners. jQuery is a popular JavaScript library that makes it easy to manipulate HTML elements on a web page or listen to user actions like click events and do some operation based on that action.. Let’s understand how we can achieve the above with the help of some examples. Example 1 In this example, we will add a heading, some text, and a list of items to the HTML document. And to display the ... Read More
In this article, we will learn how to display a spinner on the screen till the data gets loaded from an API, using Angular 8 and the HTTPClient service to fetch data from a dummy todos API. Angular 8 is a robust framework for building web applications. It offers many features that make creating dynamic and interactive user interfaces easy. Let’s use the framework and understand how to show a spinner component conditionally using an example. Prerequisites Before proceeding with the steps below, please ensure you have angular CLI installed on your systems, as we would be relying ... Read More
In this article, we will learn how to display a popup message when a logged-out user tried to vote using jQuery and its various methods. In many web applications, it is important to restrict certain actions to logged-in users only, for example, voting on a poll or a form. To implement this functionality, we will use the jQuery library and some basic HTML and CSS. We will show a popup message that informs the user that they need to be logged in to perform the desired action. Let’s understand the above approach with the help of an example − ... Read More
In this article, we will learn how to display logged-in user information using PHP and its various inbuild methods. When building a web application that requires authentication, it is often necessary to display the logged-in user's information on various pages. This could be useful in applications such as e-commerce websites, banking websites, and more. We can implement this with the help of PHP and its functions. Let’s understand this with the help of some examples. Example 1 In this example, we will create a login/logout system wherein the user will get authenticated once he is logged in, and will ... Read More
Hyperopia and presbyopia are two common refractive errors that can affect our eyesight. Both conditions can result in difficulty focusing on objects, but they have different causes and treatments. In this essay, we will discuss the difference between hyperopia and presbyopia. What is Hyperopia? Hyperopia, also known as farsightedness, is a refractive error that occurs when the eye is too short, or the cornea is too flat. This causes light to focus behind the retina, instead of directly on it, resulting in blurry vision when looking at nearby objects. Hyperopia can be genetic, meaning that it can be inherited from ... Read More
Hormones and neurotransmitters are two types of chemical messengers that play critical roles in regulating various physiological processes in the human body. Although both hormones and neurotransmitters are involved in communication between cells, they differ in several key ways. In this essay, we will explore the differences between hormones and neurotransmitters, including their chemical structure, mode of action, target cells, and physiological effects. What are Hormones? Hormones are chemical messengers that are produced by endocrine glands and released into the bloodstream to travel to distant target organs or tissues. Hormones are typically large, complex molecules, such as peptides, steroids, or ... Read More
Hepatitis and cirrhosis are two conditions that affect the liver, but they are distinct and have different causes, symptoms, and treatments. In this essay, we will discuss the key differences between these two conditions. What is Hepatitis? Hepatitis is a general term used to describe inflammation of the liver. There are several types of hepatitis, including viral hepatitis (caused by viruses such as hepatitis A, B, and C), alcoholic hepatitis (caused by excessive alcohol consumption), and autoimmune hepatitis (caused by the body’s immune system attacking the liver). Hepatitis can cause a range of symptoms, including fatigue, jaundice (yellowing of the ... Read More
Numpy is a popular Python library used for numerical computing and scientific computing, providing a powerful array object for handling large and multi−dimensional arrays. However, when it comes to machine learning, deep learning, and neural networks, PyTorch is a widely used library that provides an efficient and flexible platform for building and training these models. While Numpy arrays and PyTorch tensors are similar in many ways, they have different properties and methods, which makes it necessary to convert a Numpy array to a PyTorch tensor when using PyTorch for machine learning applications. In this article, we will explore the process ... Read More
Remote access to computers has become increasingly important, especially in today's work from home environment. While there are many commercial tools available for remote access, Python provides a simple yet effective way to remotely control your PC from anywhere using the Python programming language. In this article, we will explore how to control your PC from anywhere using Python. We will discuss how to establish a remote connection between two computers, how to use Python to execute commands on the remote PC, and how to transfer files between the local and remote computers. With this knowledge, you can remotely access ... Read More