Fully Understanding the this Keyword | Nettuts+
This tutorial from Cody Lindley's "JavaScript Enlightenment" explains how the `this` keyword works in JavaScript by linking functions to the objects they operate on, and how its value is determined by the context in which a function is called at runtime. It covers common scenarios including method calls on objects, nested functions (where `this` unexpectedly refers to the global window object in pre-ES5 code), and how to override `this` using `call()` and `apply()` methods or the `new` keyword in constructor functions. The guide also demonstrates how `this` behaves differently in prototype methods, where it refers to the specific instance invoking the method rather than the global scope.