Form handling is an essential part of any web application, and React allows us to make it more interactive and dynamic. In React, there are two main ways to handle forms: controlled components and uncontrolled components. In this blog post, we will explore both approaches and learn how to effectively handle forms in React. Forms are inherently interactive elements in HTML, designed to allow users to interact with a web page....
In this article, we will explore how to handle HTTP requests in PHP effectively. By default, PHP offers file-based routing. You can create an index.php file that will respond to the / path. This is similar to the Hello World example we covered earlier. Additionally, you can create a test.php file, which will automatically be served by Apache for the /test route. Understanding $_GET, $_POST, and $_REQUEST PHP provides superglobal objects like $_GET, $_POST, and $_REQUEST to handle different types of HTTP requests....
When encountering unexpected problems, handling exceptions is the preferred approach in JavaScript. This article will guide you through the basics of creating and handling exceptions in JavaScript. Creating Exceptions To create an exception, use the throw keyword followed by a value. This value can be any JavaScript value, such as a string, number, or object. Here’s an example: throw value When this line of code is executed, the normal program flow is immediately halted, and control is transferred to the nearest exception handler....
Handling Null Values in SQL Databases In SQL databases, it is important to properly handle null values, which are empty or missing data. Here are some tips on how to handle null values effectively. When creating a table, you can define constraints to prevent null values. For example, let’s say we have a table called “people” with columns for age and name: CREATE TABLE people ( age INT NOT NULL, name CHAR(20) NOT NULL ); By adding the NOT NULL constraint to the column definitions, we ensure that both age and name cannot be null....
Promises have greatly improved JavaScript in recent years, allowing us to handle asynchronous operations more efficiently. When working with functions that return promises, it’s important to know how to handle promise rejections. In this blog post, we’ll explore the best practices for handling promise rejections effectively. Let’s start with a simple example using the Fetch API: fetch('/data.json') .then(response => { console.log(response.status) }) But what if an error occurs during the fetch() call?...
Selling digital products independently on the internet can be a challenging task, especially when it comes to handling Value Added Tax (VAT) in the European Union (EU). As a European citizen paying taxes in the EU, particularly in Italy, the complexities surrounding VAT can be overwhelming. This article aims to shed light on the issue and offer a solution for creators. When selling digital goods, such as software or online courses, above the 10,000€ threshold, it is necessary to collect the correct VAT amount based on factors like the buyer’s location and whether they are a consumer or a business....
Understanding the process of HTTP requests when you type a URL in the browser tags: HTTP requests, browser, URL, DNS lookup, TCP connection, request, response, HTML parsing When you type something into the Google search box and press enter, have you ever wondered what happens behind the scenes? This article will explain the step-by-step process of how browsers perform page requests using the HTTP/1.1 protocol. The HTTP protocol Note that this article focuses on HTTPS connections differ from regular HTTP connections....
Tags: dark mode, website design, CSS, JavaScript, media queries Introduction In this blog post, I will explain how I added dark mode to my website. Dark mode has become a popular feature that allows users to switch between a light and dark color scheme for better readability and reduced eye strain. I will discuss the new prefers-color-scheme media feature as well as the method I used before it was available. So, let’s get started!...
I have developed numerous applications in the past few years, ranging from iOS to Mac to Web applications. Some of them had the potential to become bigger than expected, but most ended up being abandoned. This is because software has an expiration date and needs continuous updates to keep up with evolving operating systems. In recent years, I have shifted my focus towards training developers to create web applications, which has brought me immense satisfaction....
A Quest to Tackle JavaScript Fatigue For the longest time, I dreaded working with JavaScript. The overwhelming changes in the JavaScript ecosystem caused me to experience what is known as “JavaScript Fatigue.” This feeling persisted for years until one day, everything changed. Finding Love for JavaScript My introduction to JavaScript dates back to the nineties when document.write statements filled my books. Around 2012-2013, the impending arrival of ES6 (ECMAScript 2015) flooded discussions everywhere....