JavaScript this demo #1

javascript_this_1.js

var user = {
  greet: function() {
    // this refers to the calling object - user
    console.log("Hello there " + this.name + "!");
  }
};

var name;

var get_name = function() {
  // this refers to the calling object - window
  this.name = prompt("What's your name?");
};

get_name();

user.name = name;

user.greet();

console.log(name);
console.log(user);