javascript

I had occasionally used FSM (Finite State Machine) when implementing UIs. I applied the basic concepts using enum and conditional statements. In situations with many defined states and different possi...

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...

Recently, during a code review, a discussion arose about the use of undefined. Personally, for a very long time, I had quite clearly distinguished between null and undefined and used them according to...

Recently, I've been spending my weekends creating a simple game for my child using React. My child was so engrossed in a game called "Infinite Stairs" that I decided to create a version that retains t...

A few months ago, the final specification for ECMAScript 2021 was released. Some features are immediately usable, while others allow for deeper utilization of the language. It's good to see these chan...