Love Coding – programming blog

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.

Infinite scroll gallery is a simple and difficult task at the same time. It all depends on how you want to display it. For start, let’s write the basic assumptions:

UseCallback, same as useMemo hook, is useful in situation, when you want to improve performance of your app. Thanks to it, you can avoid useless renders, so app can works faster.

UseMemo hook returns memoized value. That’s why you can use it to optimize performance of your app. If you have large calculations to get value that you need, you can do it only once and use useMemo hook to remember this value.

UseRef hook can be used in two ways. First, it allows to directly access to DOM element, so we can manipulate it. Second, it can keep any mutable value in its .current property, that is not change between renders.

UseEffect hook runs after first render and after every other completed render (but we can change that, so it can runs after first render and only when certain values have changed). We may put in it piece of code, that runs after component render, so we can change state or manipulate DOM tree before it […]

UseContext hook provides a way to pass data through the component tree without having to pass props down manually at every level. It helps maintaining cleaner code. In other words – it provides a way to share values between components without having to explicitly pass a prop through every level of the tree.