Why is function.call.call not a function?

Question

Code:

let fun = x => x * x;
-> undefined
typeof fun.call.call
-> "function"
fun.call.call()
VM251:1 Uncaught TypeError: fun.call.call is not a function

Why is fun.call.call

not a function when typeof fun.call.call -> "function"

?

+3

javascript

Saravana 29 Mar 17 at 16:57

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