Call () and apply () methods

Source: Internet
Author: User

is still in the initial stage of learning JavaScript, so understanding is relatively superficial, is a simple pattern of understanding. Take a note here and let yourself remember it more when you look back.

The form of call () and apply () (B, "", "", "") a.apply (b,[])

Enables an object in B to use A's method, that is, a to provide a method, B to provide an object

The difference is that the second argument of apply must be an array


Call () and apply () methods

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