Untitled

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>

<script id="jsbin-javascript">
function personMaker() {
  var person = {
    firstName: 'Paul',
    lastName: 'Jones',
    // replace `null` with a function that uses self reference to return
    // full name
    fullName: function() {
      return this.firstName + " " + this.lastName;
    }
  };
  return person;
}


/* From here down, you are not expected to
   understand.... for now :)


   Nothing to see here!

*/

(function testPersonMaker() {
  var person = personMaker();
  if (typeof person !== 'object') {
    console.error('ERROR: `personMaker` must return an object');
    return false
  }
  if (typeof person.fullName !== 'function') {
    console.error('ERROR: `fullName` must be a method');
    return false
  }
  if (person.fullName() !== 'Paul Jones') {
    console.error('ERROR: The value for `fullName` should be "Paul Jones" but was ' + person.fullName());
    return false;
  }
  person.firstName = 'Lisa';
  person.lastName = 'Simpson';
  if (person.fullName() !== 'Lisa Simpson') {
    console.error(
      '`personMaker` is not using self reference correctly. ' +
      'When firstName set to "Lisa" and lastName set to "Simpson", ' +
      'should return "Lisa Simpson" but returned ' + person.fullName()
    )
  }
  console.log('SUCCESS: `updateObject` works correctly!');

})();
</script>


<script id="jsbin-source-javascript" type="text/javascript">function personMaker() {
  var person = {
    firstName: 'Paul',
    lastName: 'Jones',
    // replace `null` with a function that uses self reference to return
    // full name
    fullName: function() {
      return this.firstName + " " + this.lastName;
    }
  };
  return person;
}


/* From here down, you are not expected to
   understand.... for now :)


   Nothing to see here!

*/

(function testPersonMaker() {
  var person = personMaker();
  if (typeof person !== 'object') {
    console.error('ERROR: `personMaker` must return an object');
    return false
  }
  if (typeof person.fullName !== 'function') {
    console.error('ERROR: `fullName` must be a method');
    return false
  }
  if (person.fullName() !== 'Paul Jones') {
    console.error('ERROR: The value for `fullName` should be "Paul Jones" but was ' + person.fullName());
    return false;
  }
  person.firstName = 'Lisa';
  person.lastName = 'Simpson';
  if (person.fullName() !== 'Lisa Simpson') {
    console.error(
      '`personMaker` is not using self reference correctly. ' +
      'When firstName set to "Lisa" and lastName set to "Simpson", ' +
      'should return "Lisa Simpson" but returned ' + person.fullName()
    )
  }
  console.log('SUCCESS: `updateObject` works correctly!');

})();</script></body>
</html>