From 9b049e0d2f80bf96f8403838a7e71c5c51cbbd8f Mon Sep 17 00:00:00 2001
From: Md-Almasri <mohieddin.almasri@hotmail.com>
Date: Thu, 16 Mar 2017 23:42:27 +0000
Subject: [PATCH] answers

---
 exercises.js | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/exercises.js b/exercises.js
index be10a41..9f8dd66 100644
--- a/exercises.js
+++ b/exercises.js
@@ -7,61 +7,93 @@ function makeCat(name, age) {
   //add an age property to the object with the value set to the age argument
   //add a method called meow that returns the string 'Meow!'
   //return the object
+  var cat = {
+    name: name,
+    age: age,
+    meow: function () {
+      return 'Meow!';
+    }
+  };
+  return cat;
 }
 
 function addProperty(object, property) {
   //add the property to the object with a value of null
   //return the object
   //note: the property name is NOT 'property'.  The name is the value of the argument called property (a string)
+  object[property] = null;
+  return object;
 }
 
 function invokeMethod(object, method) {
   //method is a string that contains the name of a method on the object
   //invoke this method
   //nothing needs to be returned
+  object[method]();
 }
 
 function multiplyMysteryNumberByFive(mysteryNumberObject) {
   //mysteryNumberObject has a property called mysteryNumber
   //multiply the mysteryNumber property by 5 and return the product
+  return mysteryNumberObject.mysteryNumber *= 5;
 }
 
 function deleteProperty(object, property) {
   //remove the property from the object
   //return the object
+  delete object[property];
+  return object;
 }
 
 function newUser(name, email, password) {
   //create a new object with properties matching the arguments passed in.
   //return the new object
+  var obj = {
+    name: name,
+    email: email,
+    password: password
+  };
+  return obj;
 }
 
 function hasEmail(user) {
   //return true if the user has a value for the property 'email'
   //otherwise return false
+  return user.email ? true : false;
 }
 
 function hasProperty(object, property) {
   //return true if the object has the value of the property argument
   //property is a string
   //otherwise return false
+  for (var key in object) {
+    if (key === property) {
+      return true;
+    }
+  }
+  return false;
 }
 
 function verifyPassword(user, password) {
   //check to see if the provided password matches the password property on the user object
   //return true if they match
   //otherwise return false
+  return user.password === password;
 }
 
 function updatePassword(user, newPassword) {
   //replace the existing password on the user object with the value of newPassword
   //return the object
+  user.password = newPassword;
+  return user;
 }
 
 function addFriend(user, newFriend) {
   //user has a property called friends that is an array
   //add newFriend to the end of the friends array
   //return the user object
+  user.friends.push(newFriend);
+  return  user;
 }
 
 function setUsersToPremium(users) {
@@ -69,6 +101,10 @@ function setUsersToPremium(users) {
   //each user object has the property 'isPremium'
   //set each user's isPremium property to true
   //return the users array
+  for (var i = 0; i < users.length; i++) {
+    users[i].isPremium = true;
+  }
+  return users;
 }
 
 function sumUserPostLikes(user) {
@@ -77,6 +113,11 @@ function sumUserPostLikes(user) {
   //each post object has an integer property called 'likes'
   //sum together the likes from all the post objects
   //return the sum
+  var sum = 0;
+  for (var i = 0; i < user.posts.length; i++) {
+    sum += user.posts[i].likes;
+  }
+  return sum;
 }
 
 function addCalculateDiscountPriceMethod(storeItem) {
@@ -87,6 +128,10 @@ function addCalculateDiscountPriceMethod(storeItem) {
   //price -> 20
   //discountPercentage -> .2
   //discountPrice = 20 - (20 * .2)
+  storeItem.calculateDiscountPrice = function() {
+    return (storeItem.price - (storeItem.price * storeItem.discountPercentage));
+  };
+  return storeItem;
 }
 
 //Do not modify code below this line.