How does this keyword work in JavaScript ?

In JavaScript, the this keyword refers to the object that is executing the current function.

The this keyword refers to different objects depending on how it is used:

1. Global Context:
   • When you’re not inside any function or object, this refers to the big global environment.
   • Example in a browser: Imagine the global environment as the entire window. So, this would be like pointing to the window in a browser.
2. Function Context:
   • Inside a function, what this is pointing to depends on how that function is being used.
   • Regular Function: If it’s a regular function, this can also be pointing to the global environment (like the window), or if you’re in strict mode, it might be undefined.
   • Method of an Object: If the function is part of an object (a method), then this is pointing to that object.
3. Event Handlers:
   • In events like clicking a button on a webpage, this often points to the specific button you clicked.
4. Constructor Functions:
   • When you’re creating objects using a constructor function (with new), this refers to the particular object that is being created at that moment.