What is the reason that Object.keys(window) or for(k in window) does not include the Math object?

As I work on creating a JavaScript editor autocomplete feature, my goal is to showcase all available top-level elements. So far, I've experimented with:

Object.keys(window)

as well as

for (k in window) 

However, it seems like neither method includes entries such as 'Math' or 'Array'. How can I access all properties from the window object?

Answer №1

The method Object.getOwnPropertyNames() includes Math, Array, and more.

For further information, you can refer to this question: Object.getOwnPropertyNames vs Object.keys

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