this & Object Prototypes chapter 1

YDKJSY this & Object Prototypes

Chapter 1 : this or that?

The this keyword is a special identifier keyword that's automatically defined in the scope of every function.

Why `this`?

Let's try to illustrate the motivation and utility of...

this

This code snippet allows the identify() and speak() functions to be re-used against multiple context (me and you) objects, rather than needing a separate version of the function for each object.

The this mechanism provides a more elegant way of implicitly "passing along" an object reference, leading to cleaner API design and easier re-use.

What's `this`

this is neither a reference to the function itself, nor is it a reference to the function's lexical scope.

this is actually a binding that is made when a function is invoked, and what it references is determined entirely by the call-site where the function is called.

YDKJSY this & Object Prototypes Chapter 1 this or that?