The Document Object Model (DOM) is like a living map of all the elements on a webpage. It lets JavaScript talk to the page, find elements, and change them in real time. Every HTML element can have a unique identifier called an ID. Think of an ID as the element’s personal name tag — no […]
JavaScript DOM: Getting Elements by ID Read More »
In modern web development, controlling what appears inside an element—be it a heading, a paragraph, or a button—is a key part of how we build interfaces. This inner content is what users read, click, or interact with, and JavaScript gives us direct tools to read and change this content on the fly. When we talk
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In HTML, classes are attributes assigned to elements that allow developers to group elements for styling or scripting. A class can be thought of as a label that marks one or more elements, telling the browser or JavaScript what styles or behaviors apply to them. For example, if you want several buttons to look the
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In HTML, data-* attributes are a way to store custom data on elements. These attributes don’t affect how the page looks or behaves directly, but they allow developers to store extra information in the HTML, such as user IDs, product types, language preferences, or access levels. This makes them ideal for use with JavaScript when
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HTML elements are more than just tags — they carry extra information through attributes. Attributes define how an element behaves or appears. You’ve seen them everywhere: Here’s what each attribute does: Attributes like these give meaning to elements and guide how they behave in the browser. With JavaScript, we can go a step further —
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The JavaScript bind() method creates a new function that has its this keyword set to a specific value. This helps control what this refers to when the function runs. The goal of this article is to show you how to use the bind() method to fix the value of this in functions. This is especially
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When you write CSS for a web page, you can give styles to elements in many different ways. You can use classes, IDs, tags, or even add styles directly in HTML. Sometimes, more than one rule might apply to the same element. When that happens, the browser has to choose which style to use. It
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JavaScript timers let us schedule code to run after a certain amount of time. They’re useful for delays, repeated tasks, and adding a bit of life to our code—like waiting before showing a message or running something every few seconds. In this article, we’ll focus on how to use two built-in JavaScript functions: setTimeout and
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Process management is an important part of working with operating systems, and Python makes it easy using the psutil library. This powerful tool lets you access and control system processes directly by their Process IDs, or PIDs. With psutil, you can find running processes, read detailed information about them, and even manage their state—like suspending,
Python: Accessing and Managing Processes by PID with psutil Read More »
When working with multiple processes in Python, sometimes one process needs to tell others to start or stop doing something. This is called signaling. The multiprocessing.Event is a simple tool that lets one process send a signal, and other processes wait for that signal before continuing. In this article, you will learn how to create
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