London Class 10- Yulia Hospodar - JavaScript-Core-1-Coursework-Week1

mandatory/1-syntax-errors.js

@@ -1,18 +1,21 @@
 // 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 "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;
+  total = a + b;
 
-  return "The total is total";
+  return "The total is " + total;
 }
 
+
 /* 
 ===================================================
 ======= TESTS - DO NOT MODIFY BELOW THIS LINE =====

mandatory/2-logic-error.js

@@ -1,16 +1,15 @@
 // The syntax for these functions is valid but there are some errors, find them and fix them
 
 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;
 }
 
 /* 

mandatory/3-function-output.js

@@ -9,10 +9,12 @@ function combine2Words(word1, word2) {
 }
 
 function concatenate(firstWord, 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.
+  return firstWord + ' ' + secondWord + ' ' + thirdWord;
 }
 
+
+
+
 /* 
 ===================================================
 ======= TESTS - DO NOT MODIFY BELOW THIS LINE =====

mandatory/4-tax.js

@@ -1,12 +1,18 @@
 /*
   SALES TAX
   =========
-  A business requires a program that calculates how much the price of a product is including sales tax
-  Sales tax is 20% of the price of the product.
+  A business requires a program = information
+
+  that calculates = what the function will do = the return
+
+  how much the price of a product is = step 1
+   including sales tax = step 2
+  Sales tax is 20% of the price of the product. = information for step 2
 */
 
-function calculateSalesTax() {}
-
+function calculateSalesTax(price) {
+   return price * 1.2;
+}
 /*
   CURRENCY FORMATTING
   ===================
@@ -17,7 +23,11 @@ function calculateSalesTax() {}
   Remember that the prices must include the sales tax (hint: you already wrote a function for this!)
 */
 
-function addTaxAndFormatCurrency() {}
+function addTaxAndFormatCurrency(price) {
+  let priceWithTax = calculateSalesTax(price);
+  return '£' + priceWithTax.toFixed(2);
+
+}
 
 /* 
 ===================================================