this - Part 1 - Implicit Binding

this-implicit.js

// Implicit Binding
// Left of the dot at call time

// Ask yourself...
// where is this function invoked?

// Example 1
var me = {
  name: 'Nate',
  age: 25,
  sayName: function() {
    console.log(this.name);
  }
};

// me.sayName();

// Example 2
var person1 = {
  name: 'Jeff',
  age: 30
};

var person2 = {
  name: 'Jason',
  age: 32
};

var sayNameMixin = function(obj) {
  obj.sayName = function() {
    console.log(this.name);
  };
};

sayNameMixin(person1);
sayNameMixin(person2);

person1.sayName();
person2.sayName();

// Example 3
var Person = function(name, age) {
  return {
    name: name,
    age: age,
    sayName: function() {
      console.log(this.name)
    },
    mother: {
      name: "Stacy",
      sayName: function() {
        console.log(this.name);
      }
    }
  }
};

var jim = Person('Jim', 36);
jim.sayName();
jim.mother.sayName();