Object Drills

CreateMyObjectDrill.js

// Create My Object Drill

// Write a function that returns an object with key/value pairs: foo=>bar, answerToUniverse=>42, olly olly=>oxen, and
// sayHello=> function that returns the string 'hello'

function createMyObject() {
  return myObject = {
    foo: 'bar',
    answerToUniverse: 42,
    'olly olly': 'oxen free',
    sayHello: function myHello() {
      return 'hello';
  }
  };
}

// Just corrected the sayHello key, in this case, the assignmt
// asked to write a function as a value for that key.

DeletingKeys.js

// Modify the keyDeleter function so that it deletes keys 
// for foo and bar for any object passed in, and then 
// returns the modified object.

function keyDeleter(obj) {
  delete obj.foo;
  delete obj.bar;
  return obj;
}


var sampleObj = {
  foo: 'foo',
  bar: 'bar',
  bizz: 'bizz',
  bang: 'bang'
};

SelfReference.js

// Modify the personMaker.fullName to be a function that uses self reference
// (via this) in order to return the firstName and lastName properties 
// separated by a space.

// So, for instance, if firstName was 'Jane' and lastName was 'Doe', 
// fullName() should return 'Jane Doe'.


function personMaker() {
  var person = {
    firstName: 'Paul',
    lastName: 'Jones',
    fullName: null
  };
  this.fullName = function myFullName(firstName,lastName) {
    return firstName + "" + lastName;
  };
  return person;
}

// Was reading problem wrong, states: 'Modify personMaker.fullname...'


// Correct Solution:

function personMaker() {
  var person = {
    firstName: 'Paul',
    lastName: 'Jones',
    fullName: function() {
      return this.firstName + ' ' + this.lastName
    }
  };
  return person;
}

UpdateObject.js

//Modify the updateObject (which takes a single argument (obj)) 
//so that it adds the following key/value pairs to obj and 
//returns it:

// foo => 'foo'
// bar => 'bar'
// bizz => 'bizz'
// bang => 'bang'

function updateObject(obj) {
  obj.foo = 'foo';
  obj.bar = 'bar';
  obj.bizz = 'bizz';
  obj.bang = 'bang';
  return obj;
}