London 9 Turing - Zahraa Tayyar - JavaScript 1

exercises/B-hello-world/exercise.js

@@ -1 +1,7 @@
 console.log("Hello world");
+
+console.log("Hi, my name is Zahraa.")
+
+// console.log(Hi, my name is Zahraa.)
+
+console.log(50)

exercises/C-variables/exercise.js

@@ -1,3 +1,5 @@
 // Start by creating a variable `greeting`
-
+var greeting = "Hi, how are you?"
+console.log(greeting);
+console.log(greeting);
 console.log(greeting);

exercises/D-strings/exercise.js

@@ -1,3 +1,7 @@
 // Start by creating a variable `message`
 
+var message = "This is a lovely day!";
+var messageType = typeof message;
+
 console.log(message);
+console.log(messageType);

exercises/E-strings-concatenation/exercise.js

@@ -1,3 +1,8 @@
 // Start by creating a variable `message`
 
+var messageStart = "Hello, my name is ";
+var name = "Zahraa";
+
+var message = messageStart + name;
+
 console.log(message);

exercises/F-strings-methods/exercise.js

@@ -1,3 +1,7 @@
 // Start by creating a variable `message`
 
+var name = "Zahraa";
+var nameLength = name.length;
+var message = `Hello, my name is ${name} which is ${nameLength} characters long.`
+
 console.log(message);

exercises/F-strings-methods/exercise2.js

@@ -1,3 +1,7 @@
 const name = " Daniel  ";
+var nameLength = name.length;
+// var message = "My name is " + name + "and my name is " + nameLength + " characters long"
 
-console.log(message);
+var message = `Hello, my name is ${name} which is ${nameLength} characters long.`
+
+console.log(message.trim());

exercises/G-numbers/exercise.js

@@ -1 +1,10 @@
 // Start by creating a variables `numberOfStudents` and `numberOfMentors`
+
+var numberOfStudents = 60;
+var numberOfMentors = 5;
+
+var sumStudentsAndMentors = numberOfStudents + numberOfMentors;
+
+console.log(`Number of students: ${numberOfStudents}`)
+console.log(`Number of mentors: ${numberOfMentors}`)
+console.log(`Total number of students and mentors: ${sumStudentsAndMentors}`)

exercises/I-floats/exercise.js

@@ -1,2 +1,13 @@
 var numberOfStudents = 15;
 var numberOfMentors = 8;
+
+var total = numberOfStudents + numberOfMentors;
+
+var percentStudents = numberOfStudents / total * 100;
+var percentMentors = numberOfMentors / total * 100;
+
+var roundedPercentStudents = Math.round(percentStudents);
+var roundedPercentMentors = Math.round(percentMentors);
+
+console.log(`${roundedPercentStudents}%`);
+console.log(`${roundedPercentMentors}%`);

exercises/J-functions/exercise.js

@@ -1,5 +1,5 @@
 function halve(number) {
-  // complete the function here
+  return number / 2;
 }
 
 var result = halve(12);

exercises/J-functions/exercise2.js

@@ -1,5 +1,5 @@
 function triple(number) {
-  // complete function here
+  return number * 3;
 }
 
 var result = triple(12);

exercises/K-functions-parameters/exercise.js

@@ -1,6 +1,6 @@
-// Complete the function so that it takes input parameters
-function multiply() {
-  // Calculate the result of the function and return it
+
+function multiply(a, b) {
+  return a * b;
 }
 
 // Assign the result of calling the function the variable `result`

exercises/K-functions-parameters/exercise2.js

@@ -1,4 +1,6 @@
-// Declare your function first
+function divide(a, b) {
+    return a / b;
+}
 
 var result = divide(3, 4);
 

exercises/K-functions-parameters/exercise3.js

@@ -1,4 +1,6 @@
-// Write your function here
+function createGreeting(name) {
+    return `Hello, my name is ${name}`;
+}
 
 var greeting = createGreeting("Daniel");
 

exercises/K-functions-parameters/exercise4.js

@@ -1,5 +1,7 @@
-// Declare your function first
+function addition(a, b) {
+    return a + b;
+}
 
-// Call the function and assign to a variable `sum`
+let sum = addition(13, 124);
 
 console.log(sum);

exercises/K-functions-parameters/exercise5.js

@@ -1,4 +1,6 @@
-// Declare your function here
+function createLongGreeting(name, age) {
+    return `Hello, my name is ${name} and I am ${age} years old`;
+}
 
 const greeting = createLongGreeting("Daniel", 30);
 

exercises/L-functions-nested/exercise.js

@@ -3,3 +3,13 @@ var mentor2 = "Irina";
 var mentor3 = "Mimi";
 var mentor4 = "Rob";
 var mentor5 = "Yohannes";
+
+function greeting(name) {
+    return `Hello ${name}`.toUpperCase();
+}
+
+console.log(greeting(mentor1))
+console.log(greeting(mentor2))
+console.log(greeting(mentor3))
+console.log(greeting(mentor4))
+console.log(greeting(mentor5))

extra/1-currency-conversion.js

@@ -5,7 +5,12 @@
   Write a function that converts a price to USD (exchange rate is 1.4 $ to £)
 */
 
-function convertToUSD() {}
+function convertToUSD(pounds) {
+  dollars = pounds * 1.4;
+  return "$" + dollars.toFixed(2);
+}
+
+console.log(convertToUSD(32))
 
 /*
   CURRENCY CONVERSION
@@ -15,7 +20,13 @@ function convertToUSD() {}
   They have also decided that they should add a 1% fee to all foreign transactions, which means you only convert 99% of the £ to BRL.
 */
 
-function convertToBRL() {}
+function convertToBRL(pounds) {
+  let taxedPounds = pounds / 0.99;
+  let brazilianReal = taxedPounds * 5.7;
+  return "$" + brazilianReal.toFixed(2);
+}
+
+console.log(convertToBRL(9))
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.

extra/2-piping.js

@@ -16,26 +16,34 @@
   the final result to the variable goodCode
 */
 
-function add() {
-
+function add(a, b) {
+  return a + b;
 }
 
-function multiply() {
-
+function multiply(c, d) {
+  return c * d;
 }
 
-function format() {
-
+function format(e) {
+  return "£" + e;
 }
 
 const startingValue = 2;
 
 // Why can this code be seen as bad practice? Comment your answer.
-let badCode =
+let badCode = format(multiply(add(10, startingValue), 2))
+
+console.log(badCode)
 
 /* BETTER PRACTICE */
 
-let goodCode =
+let added = add(10, startingValue);
+let multiplied = multiply(2, added);
+let formatted = format(multiplied);
+
+let goodCode = formatted;
+
+console.log(goodCode)
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.

extra/3-magic-8-ball.js

@@ -43,10 +43,43 @@
     Very doubtful.
 */
 
+const veryPositiveAnswers = [
+  "It is certain.",
+  "It is decidedly so.",
+  "Without a doubt.",
+  "Yes - definitely.",
+  "You may rely on it."
+]
+
+const positiveAnswers = [
+  "As I see it, yes.",
+  "Most likely.",
+  "Outlook good.",
+  "Yes.",
+  "Signs point to yes."
+]
+
+const negative = [
+  "Reply hazy, try again.",
+  "Ask again later.",
+  "Better not tell you now.",
+  "Cannot predict now.",
+  "Concentrate and ask again."
+]
+
+const veryNegative = [
+  "Don't count on it.",
+  "My reply is no.",
+  "My sources say no.",
+  "Outlook not so good.",
+  "Very doubtful."
+]
+
 // This should log "The ball has shaken!"
 // and return the answer.
 function shakeBall() {
-  //Write your code in here
+  answer = "The ball has shaken!";
+  return answer;
 }
 
 /* 

mandatory/1-syntax-errors.js

@@ -1,18 +1,25 @@
 // There are syntax errors in this code - can you fix it to pass the tests?
 
-function addNumbers(a b c) {
+function addNumbers(a, b, c) {
   return a + b + c;
 }
 
-function introduceMe(name, age)
-  return "Hello, my name is " + name "and I am " age + "years old";
+console.log(addNumbers(3, 4, 5))
+
+function introduceMe(name, age) {
+  return "Hello, my name is " + name + "and I am " + age + " " + "years old";
+}
+
+console.log(introduceMe("Zahraa ", 24))
 
 function getTotal(a, b) {
-  total = a ++ b;
+  total = a + b;
 
-  return "The total is total";
+  return `The total is ${total}`;
 }
 
+console.log(getTotal(3, 4))
+
 /* 
 ===================================================
 ======= TESTS - DO NOT MODIFY BELOW THIS LINE =====

mandatory/2-logic-error.js

@@ -1,18 +1,23 @@
 // The syntax for this function is valid but it has an error, find it and fix it.
 
 function trimWord(word) {
-  return wordtrim();
+  return word.trim();
 }
 
+console.log(trimWord(  "CodeYourFuture"   ))
+
 function getStringLength(word) {
-  return "word".length();
+  return word.length;
 }
 
+console.log(getStringLength("Zahraa"))
+
 function multiply(a, b, c) {
-  a * b * c;
-  return;
+  return a * b * c;
 }
 
+console.log(multiply(2, 3, 4))
+
 /* 
 ===================================================
 ======= TESTS - DO NOT MODIFY BELOW THIS LINE =====

mandatory/3-function-output.js

@@ -1,18 +1,23 @@
 // Add comments to explain what this function does. You're meant to use Google!
 function getRandomNumber() {
   return Math.random() * 10;
-}
+} // This function picks a random number between 0 and 1, then multiplies it by 10.
+
+console.log(getRandomNumber(9))
 
 // Add comments to explain what this function does. You're meant to use Google!
 function combine2Words(word1, word2) {
   return word1.concat(word2);
-}
+} // Joins 2 or more strings together >>>>>> `word1word2`
 
 function concatenate(firstWord, secondWord, thirdWord) {
+  return firstWord.concat(secondWord, thirdWord)
   // Write the body of this function to concatenate three words together.
   // Look at the test case below to understand what this function is expected to return.
 }
 
+console.log(concatenate("hello", "wassup", "Zahraa"))
+
 /* 
 ===================================================
 ======= TESTS - DO NOT MODIFY BELOW THIS LINE =====

mandatory/4-tax.js

@@ -5,7 +5,10 @@
   Sales tax is 20% of the price of the product.
 */
 
-function calculateSalesTax() {}
+function calculateSalesTax(price) {
+  let tax = price + (price * 20) / 100;
+  return tax;
+}
 
 /*
   CURRENCY FORMATTING
@@ -17,7 +20,12 @@ function calculateSalesTax() {}
   Remember that the prices must include the sales tax (hint: you already wrote a function for this!)
 */
 
-function addTaxAndFormatCurrency() {}
+function addTaxAndFormatCurrency(price) {
+  const tax = price * 0.2;
+  const priceWithTax = tax + price;
+  const totalPrice = `£` + priceWithTax.toFixed(2); // `.toFixed(2)` allows you to get number to 2 decimal places//
+  return totalPrice;
+}
 
 /* 
 ===================================================