That's probably one of the most popular questions that an engineer may ask when learning either JavaScript or TypeScript languages. In some situations, when you don't know if the variable is defined, you may need to check if it exists. That can occur when you are working with objects that were passed into function. Another …
As a web developer, you have to interact with the CSS units very often. In a typical project, almost any CSS rule contains specific values that are assigned to the properties. As a result, you should know which units are available in the CSS and how they can be used. In this article, we will …
If your goal is to make a visually pleasant website, then adding custom CSS shadows may be a great choice. It's a much better option than using images or backgrounds with shadow effects drawn in some graphical editor. The CSS code is rendered by the browser and is faster to load over the network. But …
Today, we will describe what the PHP programming language is. You probably have heard a lot about it, and even wrote some basic scripts. But if you'd like to learn history or language concepts, then reading this article is the right choice to do. The first version of this language was released many years ago, …