prset

README.md

@@ -6,12 +6,24 @@ Answer short response questions directly in this markdown file. Answer questions
 
 **1. What is encapsulation? Why do we use it? How do objects enable it?**
 
+      Encapsulation is the concept of collecting information and creating object methods that have restrictive access to said data.
+      A good example of this is the Math object. Math is an object with data that is held privately and cannot be accessed unless you use
+      one of Math's object methods, like Math.Sqrt or Math.random. These methods execute code that we cannot see from the outside but have access to
+      solely because we used the proper method to access it.
+
 **2. How do objects encapsulate state? How do they encapsulate behavior?**
+
+
 
 **3. How do we create _private data_ within JavaScript objects? What is the role of _accessor properties_?**
 
 **4. What are factory functions and why are they useful?**
 
+      A factory function is essentially a function that returns a new object.
+      (incomplete).
+
+Factory functions have always been attractive in JavaScript because they
+
 ### Coding Practice
 Answer the questions in this section in the `exercises.js` file in this directory. Test are included. Install with `npm install`. Test with `npm test`. Lint with `npx eslint exercises.js`
 

exercises.js

@@ -1,4 +1,52 @@
+const cellphone = {
+  phoneNumber: '7462826352',
+  addContact(name, phoneNumber) {
+    cellphone.contacts.push({ name, phoneNumber });
+    return `${name} successfully added`;
+  },
+  numberOfContacts() {
+    return this.contacts.length;
+  },
+  lookUp(str) {
+    for(key of this.contacts) {
+      if(key.name == str) {
+        return key.phoneNumber;
+      }
+    }
+    return "Contact not found."
+  },
+  deleteContact(str) {
+    for(key of this.contacts) {
+      if(key.name == str) {
+        delete key.name;
+        delete key.phoneNumber;
+        // this.contacts.filter( (data) => { return data != undefined || null || NaN || "" }); 
+        // Above line is to remove empty objects within array.
+        return `${str} successfully deleted.`
+      }
+    }
+    return 'Contact not found.'
+  },
+  call(str) {
+    for(key of this.contacts) {
+      if(key.name == str || key.phoneNumber == str) return `Calling ${name} at ${phoneNumber}`
+      else { return 'Contact not found.'}
+    }
+  },
+  makeCellPhone(phoneNumber, model) {
+    return {};
+    This function should return an object with all of the properties and methods that we defined above. 
+    This function should take two string arguments such that 
+    the resulting cellphone object should be initialized with a phoneNumber and a model.
+  }
+};
 
+cellphone.model = 'iPhone X iOS 13.2.2 #Checkra1n';
+cellphone.contacts = [];
+cellphone.contacts.push({name:'Peter',phoneNumber:'3474236107'});
+cellphone.addContact('Pete', '1234567890');
+cellphone.addContact('Petra', '1234567890');
+cellphone.addContact('Pelican', '1234567890');
 
 module.exports = {
   cellphone,