Iman week 9

week-9/Homework/mandatory/1-practice/2-code-reading.md

@@ -15,6 +15,10 @@ Take a look at the following code:
 
 Explain why line 4 and line 6 output different numbers.
 
+line 6 log first variable, the first variable is global variable and can be use evrywhere in code,
+but om line 4 the second variable been logged which is local variable.
+means it's just been defined inside the square bracets.
+
 ## Question 2
 
 Take a look at the following code:
@@ -34,6 +38,9 @@ console.log(y)
 
 What will be the output of this code. Explain your answer in 50 words or less.
 
+the first log's output is 10, it's been defined globally and used inside the function.
+the second log's output is not defined because it tries to log a local variable outside the function.
+
 ## Question 3
 
 Take a look at the following code:
@@ -61,3 +68,5 @@ console.log(y);
 ```
 
 What will be the output of this code. Explain your answer in 50 words or less.
+first console.log output is 9,
+second console.log is an object: x: 9

week-9/Homework/mandatory/2-exercises/1-shopping-cart.js

@@ -11,9 +11,15 @@ The output of running your code should be:
 
 class ShoppingCart {
   // Add your code here
-
+  constructor() {
+    this.myBasket = [];
+  }
+  addItem(item) {
+    this.myBasket.push(item);
+  }
   cartContains() {
     // Use console.log() to output everything contained in your cart
+    console.log(this.myBasket);
   }
 }
 

week-9/Homework/mandatory/2-exercises/2-convertion.js

@@ -22,6 +22,15 @@
 */
 
 // Write your code here
+class Person {
+  constructor(name) {
+    this.name = name;
+  }
+
+  greeting() {
+    console.log("Hi! I'm " + this.name + ".");
+  }
+}
 
 // Do not edit this section
 const simon = new Person("simon");

week-9/Homework/mandatory/2-exercises/3-atm.js

@@ -12,8 +12,29 @@
  */
 
 class ATM {
-    // Add your code here
-
+  // Add your code here
+  constructor(amount) {
+    this.amount = amount;
+    this.balance = 100;
+  }
+
+  make_deposit(amount) {
+    this.balance += amount;
+    console.log(`Your New Balance Is ${this.balance}`);
+  }
+
+  check_balance() {
+    console.log(`Your Balance Is ${this.balance}`);
+  }
+
+  make_withdrawl(amount) {
+    if (amount > this.balance || amount < 0) {
+      console.log(`Sorry You Dont Have Enough Money In Your Account`);
+    } else {
+      this.balance -= amount;
+      console.log(`Your New Balance Is ${this.balance}`);
+    }
+  }
 }
 
 let atm = new ATM(); // Create the ATM
@@ -22,4 +43,4 @@ atm.make_deposit(200);
 atm.check_balance();
 atm.make_withdrawl(100);
 
-atm.make_withdrawl(500); // Your ATM should be able to handle this scenario
+atm.make_withdrawl(500); // Your ATM should be able to handle this scenario

week-9/Homework/mandatory/2-exercises/4-music-player.js

@@ -18,36 +18,55 @@ This means the order the songs are played in will be random, but each song will
 
  */
 
-
 class MusicPlayer {
-    // Add your code here
-
+  // Add your code here
+  constructor() {
+    this.playList = [];
+    this.i = 0;
+  }
+  add(song, singer) {
+    this.playList.push(`${song} by ${singer}`);
+  }
+  play() {
+    if (this.playList.length == 0) {
+      this.playList[this.i] = "There Is No Song To Play";
+    } else {
+      console.log(`Currently playing: ` + this.playList[this.i]);
+    }
+  }
+  skip() {
+    this.i += 1;
+    if (this.i == this.playList.length) {
+      this.i = 0;
+    } else if (this.playList.length == 0) {
+      this.playList[this.i] = "There Is No Song To Play";
+    }
+    console.log(`Currently playing: ` + this.playList[this.i]);
+  }
+  previous() {
+    this.i -= 1;
+    if (this.i < 0) {
+      this.i = this.playList.length - 1;
+    } else if (this.playList.length == 0) {
+      this.playList[this.i] = "There Is No Song To Play";
+    }
+    console.log(`Currently playing: ` + this.playList[this.i]);
+  }
 }
 
 let myMusicPlayer = new MusicPlayer(); // Create an empty playlist
 
-// Add some songs to your playlist
-myMusicPlayer.add("Bohemian Rhapsody","Queen");
-myMusicPlayer.add("Yesterday","The Beatles");
-myMusicPlayer.add("Vogue","Madonna");
-
-myMusicPlayer.play();      // Output: "Currently playing: Bohemian Rhapsody by Queen"
-
-myMusicPlayer.skip();      // Output: "Currently playing: Yesterday by The Beatles"
-
-myMusicPlayer.previous();  // Output: "Currently playing: Bohemian Rhapsody by Queen"
-
-myMusicPlayer.skip();      // Output: "Currently playing: Yesterday by The Beatles"
-
-myMusicPlayer.skip();      // Output: "Currently playing: Vogue by Madonna"
-
-
-
-
-
-
+//Add some songs to your playlist
+myMusicPlayer.add("Bohemian Rhapsody", "Queen");
+myMusicPlayer.add("Yesterday", "The Beatles");
+myMusicPlayer.add("Vogue", "Madonna");
 
+myMusicPlayer.play(); //Output: "Currently playing: Bohemian Rhapsody by Queen";
 
+myMusicPlayer.skip(); // Output: "Currently playing: Yesterday by The Beatles"
 
+myMusicPlayer.previous(); // Output: "Currently playing: Bohemian Rhapsody by Queen"
 
+myMusicPlayer.skip(); // Output: "Currently playing: Yesterday by The Beatles"
 
+myMusicPlayer.skip(); // Output: "Currently playing: Vogue by Madonna"