update js_array-objects-1md

1. objects/1.md

@@ -2,72 +2,127 @@
 
 ```js
 // your code goes here
+// Creating an object
+
+var myPenguin = {
+	"character name": "Captain Cook, Greta",
+	origin: "Mr. Popper's Penguin",
+	author: "Richard and Florence Atwater",
+	} 
+
 ```
 
 2. Use console.log() to print the penguin's name to the console as part of a welcome message, like "Hello, I'm a penguin and my name is [NAME HERE]!"
 
 ```js
 // your code goes here
+
+console.log(` "Hello, I'm a penguin and my name is, myPenguin ("character name")`;
+
 ```
 
 3. Write another line of code that adds a new property to your penguin called canFly and set it to false.
 
 ```js
 // your code goes here
+
+var myPenguin = {
+	"character name": "Captain Cook, Greta",
+	origin: "Mr. Popper's Penguin",
+	author: "Richard and Florence Atwater",
+}
+
+myPenguin .canFly = "false";
 ```
 
 4. Add a method to your penguin called chirp that prints to the console: "CHIRP CHIRP! Is this what penguins sound like?"
 
 ```js
 // your code goes here
+myPenguin.chirp = function() {
+	alert("Chirp Chirp! Is this what penguins sound like?")
+}
+
+myPenguin.chirp()
 ```
 
 6. Next, call your penguin's sayHello() method and make sure that it works!
 
 ```js
 // your code goes here
+myPenguin.sayHello = function() {
+	alert("Hello");
+}
+
+myPenguin.sayHello()
+
 ```
 
-7. Without modifying any of your previous code, change the penguin's name to "Penguin McPenguinFace" and then call your penguin's sayHello() function one more time to make sure it still works.
+7. Without modifying any of your previous code, change the penguin's name to "Penguin McPenguinFace" and then call your function sayHello() one more time to make sure it still works.
 
 ```js
 // your code goes here
+myPenguin.name = "Penguin McPenguinFace";
+
+myPenguin.sayHello()
+
+
 ```
 
 8. Write another method called fly, and inside that method, use an if / else statement to print "I can fly!" to the console if your penguin's canFly property is true, or "No flying for me!" if its canFly property is false.
 
 ```js
 // your code goes here
+myPenguin.fly = function() {
+	if (myPenguin.canFly === true) {
+		alert("I can fly");
+	} else {
+		alert("No flying for me");
+	}
+}
+
 ```
 
 9. Call your penguin's fly() method and make sure it works!
 
 ```js
 // your code goes here
+
+myPenguin.fly() 
 ```
 
 10. Change the canFly property to true -- again, without modifying any of your previous code!
 
 ```js
 // your code goes here
+myPenguin.canFly = false;
 ```
 
 11. Now call your penguin's fly() method again and make sure it works as expected!
 
 ```js
 // your code goes here
+myPenguin.fly()
 ```
 
 12. Write a for ... in loop to print each key to the console. (Hint: See this page for an example of this special type of loop.)
 
 ```js
 // your code goes here
+
+for (let key in myPenguin) {
+	console.log(key);
+	}
 ```
 
 13. Write another for ... in loop to print the value of each key to the console. (Hint: You'll need to use bracket notation to access the values this way, instead of dot notation!)
 
 ```js
 // your code goes here
+
+for (let key in myPenguin) {
+	console.log(myPenguin[key]);
+	}
 ```
 
 ## Exercise 2
@@ -84,6 +139,15 @@
 
 ```js
 // your code goes here
+var favoriteRecipes = {
+	title: "chicken",
+	serves: 2,
+	ingredients: ["cinnamon, cumin, code"],
+	}
+
+	console.log(favoriteRecipes.title);
+	console.log(favoriteRecipes.serves);
+	console.log(favoriteRecipes.ingredients);
 ```
 
  15. Keep track of which books you read and which books you want to read!
@@ -94,4 +158,55 @@
 
  ```js
 // your code goes here
+var allBooks = [];
+
+allBooks.push(book1)
+allBooks.push(book2)
+allBooks.push(book3)
+allBooks.push(book4)
+allBooks.push(book5)
+
+var booksToRead = [];
+
+var book1 = {
+	title: "Ullyses", 
+	author: "James Joyce",
+	alreadyRead: true,
+	}
+var book2 = {
+	title: "one good deed", 
+	author: "David Baldacci",
+	alreadyRead: true,
+}
+
+var book3 = {
+	title: "Under Currents", 
+	author: "Nora Roberts",
+	alreadyRead: true,
+}
+
+var book4 = {
+	title: "Thin Air", 
+	author: "Lisa Gray",
+	alreadyRead: false,
+}
+
+var book5 = {
+	title: "The Last Widow", 
+	author: "Karin Slaughter",
+	alreadyRead: false,
+}
+
+var booksAlreadyRead = [];
+
+for (i = 0; i < allBooks.length; i++) {
+
+	if (allBooks[i].alreadyRead) {
+		booksAlreadyRead.push(allBooks[i]);
+	} else {
+		booksToRead.push(allBooks[i]);
+	}
+}
+
+
 ```

1. objects/2.js

@@ -1,23 +1,53 @@
 // Using the different way of accessing and assigning a value to the object using `.` or `[]`
+var user = {
+	name: "John",
+	age: 40	
+}
+
+user.age // 40
+user.name // John
+user["Native Place"] = "Dhramshala";
+user["Native Place"] //Dhramshala
 
 // 1. Define a variable named `user` and assign a blank object to it.
 
+var user = {};
+
 // 2. Add a key of `user name` and a value of `Black Panther` to that object.
 
+user["user name"] = "Black Panther";
+
 // 3. Using `console.log` log the value of `user name` key from the user object.
 
+console.log(user["user name"]) 
+
 // 4. Add a key of the value of variable `batch` in the object with the value of 10.
-var batch = "myBatch";
+
+var myBatch = {
+	batch: 10
+} 
 
 // 5. Using the alert function alert the value of the key added above.
 
+alert(myBatch.batch);
+
 // 6. Add a key of `42` to the object with a value of `The answer to the meaning of life 🧸`.
 
+myBatch[42] = "The answer to the meaning of life 🧸"
+
 // 7. Using the function console.log log the value of the key `42`.
 
+console.log([42]);
+
 // 8. Add a key in your object with the value of the variable `city`. The value of the key should be `true`.
-var city = prompt("Enter the city name you visited las time.");
+
+
+myBatch.city = "true";
+
 
 // 9. Uisng console.log log the value of the key defined above.
 
+console.log(myBatch.city);
+
 // 10. Can you define a key of `let or var` in any object? Reason.
+Yes, it can be defined becuase in object there's no restrictions like in the variables.

2. array/1.md

@@ -2,70 +2,112 @@
 
 ```js
 // your code goes here
+
+var colors = ["Purple", "Red", "Pink", "Blue", "Green"]
 ```
 
 2. Access the first color in the array and print it to the console using console.log()
 
 ```js
 // your code goes here
+
+console.log(colors[0]);
 ```
 
 3.Now do the same with the third color in the list. (Remember that array indexes start at 0, not at 1!)
 
 ```js
 // your code goes here
+
+console.log(colors[2]);
+
 ```
 
 4.Write one line of code that changes the value of the last color in the list to "ultraviolet" (overwriting the previous value).
 
 ```js
 // your code goes here
+
+colors[4] = "ultraviolet";
+
 ```
 
 5. Create a new variable called fourthColor and set it equal to the fourth color in the list.
 
 ```js
 // your code goes here
+
+var fourthColor = colors[3];
+
 ```
 
 6.Add another color to the end of the list.
 
 ```js
 // your code goes here
+
+colors.push("orange")
+
 ```
 
 7.Add another color to the beginning of the list.
 
 ```js
 // your code goes here
+
+colors.unshift("dark blue")
+
 ```
 
 8. Print the length of the array to the console with console.log()
 
 ```js
 // your code goes here
+
+console.log(colors.length);
+
 ```
 
 9.Remove the last color from the end of list, and then print the length of the array to the console one more time.
 
 ```js
 // your code goes here
+
+colors.pop("brown")
+
+console.log(colors.length);
+
 ```
 
 10.Write a for loop to iterate through every color in the array and print each color's value to the console.
 
 ```js
 // your code goes here
+
+for (i = 0; i >= colors.length; i++) {
+	console.log(colors.length);
+}
+
 ```
 
 11.Copying from that loop you just wrote, modify it to print every color's value and every color's index in this format: 3, purple or 0, blue etc.
 
 ```js
 // your code goes here
+
+for(i=0; i<colors.length;i++) {
+	console.log(`${i}, ${colors[i]]`);
+}
+
+
 ```
 
 12.Create a variable named lastColor that will always point to the last element of the colors array, no matter how many colors are in the list. (Hint: make use of the array's length property for this!)
 
 ```js
 // your code goes here
+
+var lastColor=colors[colors.length -1]
+console.log(lastColor);
+
 ```