north-west-5/davood.moradi/js.week1

exercises/C-variables/exercise.js

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

exercises/D-strings/exercise.js

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

exercises/E-strings-concatenation/exercise.js

@@ -1,3 +1,4 @@
 // Start by creating a variable `message`
-
-console.log(message);
+const name1="Bahareh"
+const message="hello i am a "
+console.log(message+ name1);

exercises/F-strings-methods/exercise.js

@@ -1,3 +1,5 @@
 // Start by creating a variable `message`
+var name1= "bahareh";
+var nameLength = name1.length;
 
-console.log(message);
+console.log(nameLength)

exercises/F-strings-methods/exercise2.js

@@ -1,3 +1,4 @@
-const name = " Daniel  ";
-
-console.log(message);
+const name1 = " Daniel  ";
+const message= "hello i am a ";
+var nameLength = name1.length;
+console.log("my name is" +" "+ name1.trim() + " and my name is "+ nameLength + "character.");

exercises/G-numbers/exercise.js

@@ -1 +1,5 @@
 // Start by creating a variables `numberOfStudents` and `numberOfMentors`
+const numberOfStudents=40;
+const numberOfMentors = 8;
+
+console.log(numberOfMentors + numberOfStudents);

exercises/I-floats/exercise.js

@@ -1,2 +1,5 @@
-var numberOfStudents = 15;
+const numberOfStudents = 15;
 var numberOfMentors = 8;
+var preciseNum=(numberOfMentors / numberOfStudents) *100;
+var roughNum = Math.round(preciseNum);
+console.log(roughNum , preciseNum);

exercises/J-functions/exercise.js

@@ -1,7 +1,8 @@
 function halve(number) {
   // 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
+  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
-}
-
-// Assign the result of calling the function the variable `result`
-var result = multiply(3, 4);
-
-console.log(result);
+function multiply(a , b) {
+  return a*b;
+    // Calculate the result of the function and return it
+  }
+
+  // Assign the result of calling the function the variable `result`
+  var result = multiply(3, 4);
+
+  console.log(result);

exercises/K-functions-parameters/exercise2.js

@@ -1,5 +1,8 @@
 // Declare your function first
 
+function divide(a , b) {
+    return a/b;
+}
 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
-
-var greeting = createGreeting("Daniel");
-
-console.log(greeting);
+function createGreeting(name){
+    return "hello i am a " + name;
+    }
+    var greeting = createGreeting("Daniel");
+
+    console.log(greeting);

exercises/K-functions-parameters/exercise4.js

@@ -1,5 +1,9 @@
 // Declare your function first
 
 // Call the function and assign to a variable `sum`
-
-console.log(sum);
+function addNumbers(a , b){
+    return a + b;
+    }
+    const sum=addNumbers(13 ,124)
+
+    console.log(sum);

exercises/K-functions-parameters/exercise5.js

@@ -1,5 +1,7 @@
 // Declare your function here
+function createLongGreeting(name , number){
+    return "My name is " + name +" "+ "and i am " + number +" "+"years old!"
+}
+    const greeting = createLongGreeting("Daniel", 30);
 
-const greeting = createLongGreeting("Daniel", 30);
-
-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 createCreeting(name) {
+    const upperName= name.toUpperCase();
+    const message =
+      "hello " + upperName;
+    return message;
+  }
+  console.log(createCreeting(mentor1));
+  console.log(createCreeting(mentor2));
+  console.log(createCreeting(mentor3));
+  console.log(createCreeting(mentor4));
+  console.log(createCreeting(mentor5));
+

mandatory/1-syntax-errors.js

@@ -1,27 +1,24 @@
 // 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";
-
+function introduceMe(name, age){
+  return "Hello, my name is " + name + " "+"and I am "+ age +" " +"years old";
+}
 function getTotal(a, b) {
-  total = a ++ b;
+ const total = a + b;
 
-  return "The total is total";
+  return "The total is " + total;
 }
 
 /* 
 ===================================================
 ======= TESTS - DO NOT MODIFY BELOW THIS LINE =====
-
 There are some Tests in this file that will help you work out if your code is working.
-
 To run the tests for just this one file, type `npm test -- --testPathPattern 1-syntax-errors` into your terminal
 (Reminder: You must have run `npm install` one time before this will work!)
-
 ===================================================
 */
 
@@ -37,4 +34,4 @@ test("introduceMe function returns the correct string", () => {
 
 test("getTotal returns a string describing the total", () => {
   expect(getTotal(23, 5)).toEqual("The total is 28");
-});
+});

mandatory/2-logic-error.js

@@ -1,24 +1,22 @@
 // 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();
 }
 
 function getStringLength(word) {
-  return "word".length();
+  return word.length;
 }
 
 function multiply(a, b, c) {
-  a * b * c;
-  return;
+ return a * b * c;
+
 }
 
 /* 
 ===================================================
 ======= TESTS - DO NOT MODIFY BELOW THIS LINE =====
-
 There are some Tests in this file that will help you work out if your code is working.
-
 To run the tests for just this one file, type `npm test -- --testPathPattern 2-logic-error` into your terminal
 (Reminder: You must have run `npm install` one time before this will work!)
 ===================================================
@@ -48,4 +46,4 @@ test("multiply multiplies numbers", () => {
 
 test("multiply multiplies different numbers", () => {
   expect(multiply(2, 3, 4)).toEqual(24);
-});
+});

mandatory/3-function-output.js

@@ -9,16 +9,16 @@ function combine2Words(word1, word2) {
 }
 
 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.
 }
 
 /* 
 ===================================================
 ======= TESTS - DO NOT MODIFY BELOW THIS LINE =====
-
 There are some Tests in this file that will help you work out if your code is working.
-
 To run the tests for just this one file, type `npm test -- --testPathPattern 3-function-output` into your terminal
 (Reminder: You must have run `npm install` one time before this will work!)
 ==================================
@@ -34,4 +34,4 @@ test("concatenate example #2", () => {
 
 test("concatenate doesn't only accept strings", () => {
   expect(concatenate("I", "am", 13)).toEqual("I am 13");
-});
+});

mandatory/4-tax.js

@@ -5,26 +5,30 @@
   Sales tax is 20% of the price of the product.
 */
 
-function calculateSalesTax() {}
+function calculateSalesTax(price) {
+  const tax=(20*price) / 100;
+  return price + tax;
+}
 
 /*
   CURRENCY FORMATTING
   ===================
   The business has informed you that prices must have 2 decimal places
   They must also start with the currency symbol
   Write a function that adds tax to a number, and then transforms the total into the format £0.00
-
   Remember that the prices must include the sales tax (hint: you already wrote a function for this!)
 */
 
-function addTaxAndFormatCurrency() {}
+
+  function addTaxAndFormatCurrency(price) {
+
+    return   `£${calculateSalesTax(price).toFixed(2)}`;
+}
 
 /* 
 ===================================================
 ======= TESTS - DO NOT MODIFY BELOW THIS LINE =====
-
 There are some Tests in this file that will help you work out if your code is working.
-
 To run the tests for just this one file, type `npm test -- --testPathPattern 4-tax` into your terminal
 (Reminder: You must have run `npm install` one time before this will work!)
 ===================================================
@@ -52,4 +56,4 @@ test("addTaxAndFormatCurrency for £17.50", () => {
 
 test("addTaxAndFormatCurrency for £34", () => {
   expect(addTaxAndFormatCurrency(34)).toEqual("£40.80");
-});
+});