Node.js This Binding

Arrow functions do not bind their own this and instead inherit it from the surrounding scope. This makes them useful for callbacks but unsuitable for object methods.

• Arrow functions use lexical this from the outer scope.
• Not suitable for object methods because this won’t refer to the object.
• ES6 method shorthand should be used for defining methods.
• Ideal for callbacks like forEach where outer this access is needed.

Filename: index.js

Run index.js file using the following command:

node index.js

• Arrow functions use lexical this, so they access the object’s this correctly.
• In eventOne, this.name works because the arrow function inherits this.
• Normal functions have their own this, so context is lost inside forEach.
• In eventTwo, this.nanome becomes undefined inside the callback.

So this is how 'this' binding works on arrow functions and normal functions.