Posts

Understanding and utilizing lifecycle events in Svelte is crucial for implementing desired functionalities in components. Svelte provides several lifecycle events that we can hook into to execute specific actions at different stages of component rendering and destruction. The key lifecycle events in Svelte are: onMount: Fired after the component is rendered. onDestroy: Fired after the component is destroyed. beforeUpdate: Fired before the DOM is updated. afterUpdate: Fired after the DOM is updated....

C, the programming language, offers three ways to perform loops: for loops, while loops, and do while loops. These loops allow you to iterate over arrays, but with slight differences. Let’s dive into the details of each loop. For Loops The most common way to perform a loop in C is through for loops. Using the for keyword, you can define the looping rules upfront and then provide the block of code to be executed repeatedly....

Learn how to effectively work with loops in Svelte templates to dynamically display data. Creating Loops In Svelte templates, you can create loops using the {#each}{/each} syntax. Here’s an example: <script> let goodDogs = ['Roger', 'Syd']; </script> {#each goodDogs as goodDog} <li>{goodDog}</li> {/each} This syntax is similar to what you might have used in other frameworks that use templates. Getting the Index of Iteration You can also get the index of the current iteration using the following syntax:...

MySQL, a popular relational database, can be seamlessly integrated with Node.js. In this article, we will explore the basics of working with MySQL using the mysqljs/mysql package, a widely-used package that has been around for years and has over 12,000 GitHub stars. Installing the Node mysql package To install the package, simply run the following command in your terminal: npm install mysql Initializing the connection to the database To establish a connection to the MySQL database, you need to first include the mysql package in your code:...

Learn two modern techniques for working with arrays and objects in JavaScript. You can expand an array, object, or string using the spread operator .... Let’s start with an example for arrays: const a = [1, 2, 3]; To create a new array, you can use: const b = [...a, 4, 5, 6]; You can also create a copy of an array using: const c = [...a]; This also works for objects....

Learn how to effectively use reactive statements in Svelte to listen for changes in component state and update other variables. In Svelte, you can easily track changes in component state and update related variables. Let’s take an example of a count variable: <script> let count = 0; </script> To update the count variable when a button is clicked, you can use the following code: <script> let count = 0; const incrementCount = () => { count = count + 1; } </script> {count} <button on:click={incrementCount}>+1</button> In order to listen for changes on the count variable, Svelte provides the special syntax $:....

Learn how to effectively interact with scrolling on web pages, including how to react to scroll events and utilize throttling techniques. Introduction Scrolling a webpage to view content beyond the visible area, commonly referred to as “below the fold,” is one of the most common user actions. Understanding how to work with scrolling is crucial for building a seamless user experience. In this article, we will explore how to listen for scroll events, retrieve scroll positions, and implement throttling techniques for improved performance....

In C programming, static variables play a crucial role in maintaining data across function calls. They are initialized with the static keyword and have a default value of 0 if not explicitly specified. Let’s dive into the details of static variables and how they can be used effectively. Introduction to Static Variables A static variable retains its value between multiple function calls, unlike local variables that are re-initialized each time a function is called....

In this blog post, we will explore how to work with the float property in CSS and the concept of clearing. The float property has been a crucial topic in the past, used in various hacks and creative ways to implement layouts. However, with the introduction of Flexbox and Grid, the scope of the float property has changed to its original purpose - placing content on one side of the container and making its siblings appear around it....

Every browser provides a console that allows you to interact with the Web Platform APIs and view messages generated by your JavaScript code. In this article, we will explore how to work with the DevTools console and the Console API to improve your debugging and development process. Overview of the console The console toolbar provides several useful features. There is a button to clear the console messages, which can also be done by clicking cmd-K in macOS or ctrl-K on Windows....