Palestine Class - Ibrahim Isleem - JavaScript Core 1 - Week 1

exercises/B-hello-world/exercise.js

@@ -1 +1 @@
-console.log("Hello world");
+console.log("Hello world");

exercises/C-variables/exercise.js

@@ -1,3 +1,5 @@
 // Start by creating a variable `greeting`
-
+var greeting = "Hello, World";
 console.log(greeting);
+console.log(greeting);
+console.log(greeting);

exercises/D-strings/exercise.js

@@ -1,3 +1,5 @@
 // Start by creating a variable `message`
-
+let message = "This is a string";
 console.log(message);
+let messgeType = typeof message;
+console.log(messgeType);

exercises/E-strings-concatenation/exercise.js

@@ -1,3 +1,7 @@
 // Start by creating a variable `message`
+let greeting = "Hello, my name is ";
+let name = "Ibrahim Isleem";
 
-console.log(message);
+let message = greeting + name;
+
+console.log(message);

exercises/F-strings-methods/exercise.js

@@ -1,3 +1,5 @@
 // Start by creating a variable `message`
-
-console.log(message);
+let name = "Ibrahim";
+let namelenght = name.length;
+let message = `My ${name} is Daniel and my name is ${namelenght} characters long`;
+console.log(message);

exercises/F-strings-methods/exercise2.js

@@ -1,3 +1,3 @@
 const name = " Daniel  ";
-
-console.log(message);
+let message = name.trim();
+console.log(message);

exercises/G-numbers/exercise.js

@@ -1 +1,7 @@
 // Start by creating a variables `numberOfStudents` and `numberOfMentors`
+let numberOfStudents = 15;
+let numberOfMentors = 8;
+let sum = numberOfStudents + numberOfMentors;
+console.log(`Number of students: ${numberOfStudents}`);
+console.log(`Number of Mentors: ${numberOfMentors}`);
+console.log(`Total numnber of students and mentors: ${sum}`);

exercises/I-floats/exercise.js

@@ -1,2 +1,10 @@
 var numberOfStudents = 15;
 var numberOfMentors = 8;
+var percentageOfStudents = Math.round(
+    (numberOfStudents / (numberOfStudents + numberOfMentors)) * 100
+);
+var percentageOfMentors = Math.round(
+    (numberOfMentors / (numberOfStudents + numberOfMentors)) * 100
+);
+console.log(`Percentage students: ${percentageOfStudents}%`);
+console.log(`Percentage Mentors: ${percentageOfMentors}%`);

exercises/J-functions/exercise.js

@@ -1,7 +1,8 @@
 function halve(number) {
-  // complete the function here
+    // complete the function here
+    return number / 2;
 }
 
 var result = halve(12);
 
-console.log(result);
+console.log(result);

exercises/J-functions/exercise2.js

@@ -1,7 +1,8 @@
 function triple(number) {
-  // complete function here
+    // complete function here
+    return number * 3;
 }
 
 var result = triple(12);
 
-console.log(result);
+console.log(result);

exercises/K-functions-parameters/exercise.js

@@ -1,9 +1,10 @@
 // Complete the function so that it takes input parameters
-function multiply() {
-  // Calculate the result of the function and return it
+function multiply(num1, num2) {
+    // Calculate the result of the function and return it
+    return num1 * num2;
 }
 
 // Assign the result of calling the function the variable `result`
 var result = multiply(3, 4);
 
-console.log(result);
+console.log(result);

exercises/K-functions-parameters/exercise2.js

@@ -1,5 +1,7 @@
 // Declare your function first
-
+function divide(num1, num2) {
+    return num1 / num2;
+}
 var result = divide(3, 4);
 
-console.log(result);
+console.log(result);

exercises/K-functions-parameters/exercise3.js

@@ -1,5 +1,7 @@
 // Write your function here
+function createGreeting(name) {
+    return `Hello, my name is ${name}`;
+}
+var greeting = createGreeting("Ibrahim");
 
-var greeting = createGreeting("Daniel");
-
-console.log(greeting);
+console.log(greeting);

exercises/K-functions-parameters/exercise4.js

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

exercises/K-functions-parameters/exercise5.js

@@ -1,5 +1,8 @@
 // Declare your function here
+function createLongGreeting(name, age) {
+    return `Hello, my name is ${name} and I'm ${age} years old`;
+}
 
-const greeting = createLongGreeting("Daniel", 30);
+const greeting = createLongGreeting("Ibrahim", 24);
 
-console.log(greeting);
+console.log(greeting);

exercises/L-functions-nested/exercise.js

@@ -3,3 +3,17 @@ var mentor2 = "Irina";
 var mentor3 = "Mimi";
 var mentor4 = "Rob";
 var mentor5 = "Yohannes";
+
+function greeting(name) {
+    return `hello ${name}`;
+}
+
+function greetingUpperCase(name) {
+    return greeting(name).toUpperCase();
+}
+
+console.log(greetingUpperCase(mentor1));
+console.log(greetingUpperCase(mentor2));
+console.log(greetingUpperCase(mentor3));
+console.log(greetingUpperCase(mentor4));
+console.log(greetingUpperCase(mentor5));

extra/1-currency-conversion.js

@@ -5,7 +5,9 @@
   Write a function that converts a price to USD (exchange rate is 1.4 $ to £)
 */
 
-function convertToUSD() {}
+function convertToUSD(price) {
+    return price * 1.4;
+}
 
 /*
   CURRENCY CONVERSION
@@ -15,7 +17,9 @@ 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(currency) {
+    return currency * 0.99 * 5.7;
+}
 
 /* ======= TESTS - DO NOT MODIFY ===== 
 There are some Tests in this file that will help you work out if your code is working.
@@ -25,17 +29,17 @@ To run these tests type `npm run extraTo run the tests for just this one file, t
 */
 
 test("convertToUSD function works for £32", () => {
-  expect(convertToUSD(32)).toEqual(44.8);
+    expect(convertToUSD(32)).toEqual(44.8);
 });
 
 test("convertToUSD function works for £50", () => {
-  expect(convertToUSD(50)).toEqual(70);
+    expect(convertToUSD(50)).toEqual(70);
 });
 
 test("convertToBRL function works for £30", () => {
-  expect(convertToBRL(30)).toEqual(169.29);
+    expect(convertToBRL(30)).toEqual(169.29);
 });
 
 test("convertToBRL function works for £1.50", () => {
-  expect(convertToBRL(1.5)).toEqual(8.46);
-});
+    expect(convertToBRL(1.5)).toEqual(8.46);
+});

extra/2-piping.js

@@ -16,58 +16,59 @@
   the final result to the variable goodCode
 */
 
-function add() {
-
+function add(a, b) {
+    return a + b;
 }
 
-function multiply() {
-
+function multiply(a, b) {
+    return a * b;
 }
 
-function format() {
-
+function format(number) {
+    return "£" + number;
 }
 
 const startingValue = 2;
 
 // Why can this code be seen as bad practice? Comment your answer.
-let badCode =
+// its not reusable
+let badCode = "£" + (startingValue + 10) * 2;
 
 /* BETTER PRACTICE */
-
-let goodCode =
-
+let addNum = add(startingValue, 10);
+let multiplyNum = multiply(addNum, 2);
+let goodCode = format(multiplyNum);
 /* ======= TESTS - DO NOT MODIFY ===== 
-There are some Tests in this file that will help you work out if your code is working.
+                  There are some Tests in this file that will help you work out if your code is working.
 
-To run these tests type `npm run extraTo run the tests for just this one file, type `npm run extra-tests -- --testPathPattern 2-piping` into your terminal
-(Reminder: You must have run `npm install` one time before this will work!)
-*/
+                  To run these tests type `npm run extraTo run the tests for just this one file, type `npm run extra-tests -- --testPathPattern 2-piping` into your terminal
+                  (Reminder: You must have run `npm install` one time before this will work!)
+                  */
 
 test("add function - case 1 works", () => {
-  expect(add(1, 3)).toEqual(4);
+    expect(add(1, 3)).toEqual(4);
 });
 
 test("add function - case 2 works", () => {
-  expect(add(2.4, 5)).toEqual(7.4);
+    expect(add(2.4, 5)).toEqual(7.4);
 });
 
 test("multiply function works", () => {
-  expect(multiply(2, 3)).toEqual(6);
+    expect(multiply(2, 3)).toEqual(6);
 });
 
 test("format function works for whole number", () => {
-  expect(format(16)).toEqual("£16");
+    expect(format(16)).toEqual("£16");
 });
 
 test("format function works for decimal number", () => {
-  expect(format(10.1)).toEqual("£10.1");
+    expect(format(10.1)).toEqual("£10.1");
 });
 
 test("badCode variable correctly assigned", () => {
-  expect(badCode).toEqual("£24");
+    expect(badCode).toEqual("£24");
 });
 
 test("goodCode variable correctly assigned", () => {
-  expect(goodCode).toEqual("£24");
-});
+    expect(goodCode).toEqual("£24");
+});

mandatory/1-syntax-errors.js

@@ -1,16 +1,16 @@
 // There are syntax errors in this code - can you fix it to pass the tests?
 
-function addNumbers(a b c) {
-  return 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";
+return "Hello, my name is " + name + "and I am " + age + "years old";
 
 function getTotal(a, b) {
-  total = a ++ b;
+    total = a + b;
 
-  return "The total is total";
+    return "The total is " + total;
 }
 
 /* 
@@ -26,15 +26,15 @@ To run the tests for just this one file, type `npm test -- --testPathPattern 1-s
 */
 
 test("addNumbers adds numbers correctly", () => {
-  expect(addNumbers(3, 4, 6)).toEqual(13);
+    expect(addNumbers(3, 4, 6)).toEqual(13);
 });
 
 test("introduceMe function returns the correct string", () => {
-  expect(introduceMe("Sonjide", 27)).toEqual(
-    "Hello, my name is Sonjide and I am 27 years old"
-  );
+    expect(introduceMe("Sonjide", 27)).toEqual(
+        "Hello, my name is Sonjide and I am 27 years old"
+    );
 });
 
 test("getTotal returns a string describing the total", () => {
-  expect(getTotal(23, 5)).toEqual("The total is 28");
-});
+    expect(getTotal(23, 5)).toEqual("The total is 28");
+});