JavaScript String Method Temporarily Boxes Primitives

While revisiting JavaScript fundamentals, I had a small but interesting realization. When we do something like: "hello world".toUpperCase() we are calling a method on a primitive value. But primitives don’t actually have methods. Behind the scenes, JavaScript temporarily boxes the primitive into its object wrapper (like String) so the method can run, and then discards it. Small detail, but it explains why methods like toUpperCase() work on strings without us ever creating new String(). Sometimes revisiting the basics reveals the most elegant parts of JavaScript. #JavaScript #WebDevelopment #Programming #JSFundamentals

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