Frontend
Frontend related technologies and learning records.

Why YouTube and Netflix Behave Differently on Safari and Chrome
2025-07-14
Netflix, which supports 4K on Safari, is limited to 1080p on Chrome. Conversely, YouTube supports 4K even on Chrome. What's the reason? Let's find out.

Deep Dive into the Differences Between Observers and Event Handlers in Event Processing!
2025-06-23
Examining the differences between observers and event handlers in event processing, and providing clear reasoning for when to use each.

Is React a Framework?: A Question for Investment, Not Debt
2024-12-24
An article exploring whether React is a framework. It also describes the importance of establishing a basis for making technology an investment rather than technical debt.

Circular Dependencies Problem in JavaScript
2024-11-18
Let's learn what circular dependencies are in JavaScript and how to solve them.

Revisiting Closures
2024-01-07
Closures are one of the characteristics of functional programming. I want to reorganize the parts I misunderstood.