frontend

Event handlers are always used when developing UIs. Not just on the web, but native applications also use nearly identical abstractions, albeit with slight differences. As frequently as they are used,...

The Page Visibility API, as the name suggests, allows you to determine whether a page is currently visible to the user. More precisely, it tells you if the page can be seen on the monitor. There's no...

Web storage, consisting of sessionStorage and localStorage, is now very familiar. Unlike cookies, which were difficult to handle, web storage clarifies its use as client-side storage and has already b...

Every time I start a frontend project, there are things that need to be decided. Defining the development environment and stack, choosing a version control tool (usually Git), deciding how to manage b...

While developing, you frequently encounter red error messages due to mistakes in the code. It's fortunate if bugs are found during development, but seeing an error message in a live service can make a...