1. Event propagation Event propagation is the way events travel through the DOM tree. There are two directions of propagation: Example of event propagation Let’s assume we have the following HTML: And we add two event listeners: If you click on #child, you will see in the console: This happens because the event bubbles (it […]

In CSS, the background property is used very often. It lets you add background colors, images, gradients, and many other visual effects. By using background-image together with background-color, you can create nice-looking sections, banners, hero images, layouts, and full website designs. Background-color This is the simplest and most commonly used type of background. The background […]

Data- attributes in HTML – what are they and what are they used for? When writing a website in HTML, we often need to store some extra information about an element. This can be information that is not visible to the user but is useful in JavaScript or CSS – for example, it can be […]

Object destructuring is a syntax in JavaScript that allows you to extract values from objects and assign them to variables in a straightforward way. This enables easy access to data stored in objects without having to reference the object’s properties each time.

Midnight Commander (MC) is a free and open-source file manager that provides a text-based user interface. It is available on numerous Unix-like systems, including Linux and macOS. It uses a two-panel layout, allowing users to view the contents of two directories simultaneously. This design makes it easy to move or copy files between directories. Due […]

If you’re reading this post then you probably have problem with slider, that don’t work correctly if occurs several times on the same page. I have a solution to you – simple jQuery slider, that you can put on page as many times, as you want and it will be work as it should.

To have full control over displaying posts in WordPress we can use WP_Query class and create our own query. According to documentation, if we want to to display posts in random order, we must pass suitable arguments to the query:

When you write your own plugin, you often want to add dedicated page for its settings. In this post I will show you how to do this.

Ajax ( Asynchronous JavaScript and XML ) allows us do action in asynchronous way – without page reloading. It is very useful and has affect on better user experience. We can for example add, hide or delete some content from site and there’s no need to reload whole page.

When you write your own plugin, you may want to send users to settings page after they activate the plugin. Here’s a simple tutorial of how to add additional links to your plugin on plugin page in wordpress.