In this tutorial, we will explore the concept of variables and constants in Swift. Variables allow us to assign a value to a label, while constants are used when the assigned value should not be changed. Variables in Swift In Swift, variables are defined using the var keyword followed by the variable name. For example: var name = "Roger" var age = 8 Once a variable is defined, its value can be changed by simply reassigning it....
The this keyword in JavaScript has different values based on its context. Ignoring this important detail can lead to confusion and bugs in your code. In this article, we will explore the different behaviors of this and how to use it effectively. The this Keyword in Strict Mode In strict mode, the this keyword outside of any object is always undefined. However, in the default sloppy mode, this refers to the global object (window in a browser context), unless specific cases override this behavior....
In JavaScript, an ArrayBuffer is a data structure that represents a collection of bytes in memory. Similar to a Blob, which represents data available on disk, an ArrayBuffer serves as an opaque representation of bytes available in memory. To create an ArrayBuffer, you need to provide its length in bytes as a parameter in the constructor. Here’s an example: const buffer = new ArrayBuffer(64); Once you have an ArrayBuffer, you can access its length in bytes using the byteLength property, which is read-only....
The ArrayBufferView object serves as a subset of the ArrayBuffer, comprising an offset and a specific length. By creating an instance of the ArrayBufferView object, you gain access to three read-only properties: buffer: This property points to the original ArrayBuffer. byteOffset: It represents the offset on the buffer. byteLength: This property reveals the content’s length in bytes. Two examples of ArrayBufferView instances are Typed Arrays and DataViews. These objects play a crucial role in working with binary data and offer efficient ways to manipulate and interpret that data....
One common question that comes up when working on a local website is related to the behavior of the npm run dev command. Each time this command is executed, it starts a long-running process that spins up a local development server. This practice is widely used in web development, and many tools like Astro and Next.js rely on the same command. However, one observation developers make is that each time they run npm run dev, the localhost port gets incremented....
In web development, it is essential to understand the CSS Box Model and how it affects the sizing and layout of elements. The CSS Box Model explains the structure of every element as a box, consisting of several properties. The Box Model is organized into four layers, going from the inside out: Content Area: This is the innermost layer of the box. It represents the actual content of the element. When you set a width or height for an element, it is applied to the content area....
When you come across the term “declarative approach” in relation to React, it refers to the way React allows you to build user interfaces (UIs). React made the declarative approach popular in the frontend development world by introducing it as a fundamental concept. However, it is not a completely new concept. In comparison to using HTML templates, React takes the declarative approach to a whole new level. With React, you can create web interfaces without directly manipulating the DOM....
What sets primitive types apart from objects in JavaScript? Let’s take a closer look. First, let’s define what primitive types are: Strings Numbers (Number and BigInt) Booleans (true or false) Undefined Symbol values While null is considered a special primitive type, calling typeof null actually returns 'object', even though it is a primitive type. In JavaScript, anything that is not a primitive type is an object, including functions. Functions can have properties and methods assigned to them....
When it comes to handling DOM events in JavaScript, it’s common to get confused about when to use event.stopPropagation(), event.preventDefault(), or simply return false. In this blog, we’ll clarify the purpose of each and guide you on their appropriate usage. event.stopPropagation() The stopPropagation() method of an Event object allows you to prevent event bubbling. Event bubbling is the natural propagation of an event from a specific element to its parent elements....
In this blog post, I aim to provide you with a conceptual understanding of the transition from frontend to backend web development in the realm of web development. Let’s start by defining frontend. Frontend refers to the programming that takes place within the browser. We often refer to it as client-side web development. In frontend development, the focus is on creating and distributing an application that runs on the client’s machine, whether it be a laptop, desktop computer, or mobile device....