Primitives are called that basically because they are represented as is in the underlying C++ code, or bytecode.
But in JS, everything is an object. undefined, for example is a property that lives in the window object of a browser. Naturally, in JS primitives are wrapped in their [forgot the ECMA-naming-convention] object. But as long as you assign a primitive to a variable or use () or return it (thus wrapping it in an object), it becomes an object on its own automatically because of the prototypical nature of the language.
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"Everything is an object"
No, primitives aren't object.
yeah but they are wrapped in object
Yep, you can add methods to numbers
Primitives are called that basically because they are represented as is in the underlying C++ code, or bytecode.
But in JS, everything is an object.
undefined, for example is a property that lives in the window object of a browser. Naturally, in JS primitives are wrapped in their [forgot the ECMA-naming-convention] object. But as long as you assign a primitive to a variable or use () or return it (thus wrapping it in an object), it becomes an object on its own automatically because of the prototypical nature of the language.