reorganizing some more

Chapter 2/Code Samples/ch2_boolean_and_comparison.js

@@ -0,0 +1,11 @@
+let bool1 = false;
+let bool2 = true;
+console.log(typeof bool1)
+
+let str1 = "JavaScript is fun!";
+let str2 = "JavaScript is fun!";
+console.log("These two strings are the same:", str1 === str2);
+
+let sym1 = Symbol("JavaScript is fun!");
+let sym2 = Symbol("JavaScript is fun!");
+console.log("These two Symbols are the same:", sym1 === sym2);

Chapter 2/Code Samples/ch2_calculations_conversions.js

@@ -0,0 +1,43 @@
+// let nr1 = 2;
+// let nr2 = "2";
+// console.log(nr1 * nr2);
+
+// let nr1 = 2;
+// let nr2 = "2";
+// console.log(nr1 + nr2);
+
+// let nrToStr = 6;
+// nrToStr = String(nrToStr);
+// console.log(nrToStr, typeof nrToStr);
+
+// let strToNr = "12";
+// strToNr = Number(strToNr);
+// console.log(strToNr, typeof strToNr);
+
+// let strToBool = "any string will return true";
+// strToBool = Boolean(strToBool);
+// console.log(strToBool, typeof strToBool);
+
+// let nullToNr = null;
+// nullToNr = Number(nullToNr);
+// console.log("null", nullToNr, typeof nullToNr);
+
+// let strToNr = "";
+// strToNr = Number(strToNr);
+// console.log("empty string", strToNr, typeof strToNr);
+
+// let strToNr2 = "hello";
+// strToNr2 = Number(strToNr2);
+// console.log(strToNr2, typeof strToNr2);
+
+// let strToBool = "";
+// strToBool = Boolean(strToBool);
+// console.log(strToBool, typeof strToBool);
+
+// let strToBool2 = "false";
+// strToBool2 = Boolean(strToBool2);
+// console.log(strToBool2, typeof strToBool2);
+
+// let nr1 = 2;
+// let nr2 = "2";
+// console.log(nr1 + Number(nr2));

Chapter 2/Code Samples/ch2_snippets.js

@@ -1,184 +0,0 @@
-// let firstname = "Maria";
-// firstname = "Jacky";
-
-// let nr1 = 12;
-// var nr2 = 8;
-// const pi = 3.14159;
-
-// throws a TypeError
-// const someConstant = 3;
-// someConstant = 4;
-
-// let singleString = 'Hi there!';
-// let doubleString = "How are you?";
-
-// let language = "JavaScript";
-// let message = `Let's learn ${language}`;
-// console.log(message);
-
-// let intNr = 1;
-// let decNr = 1.5;
-// let expNr = 1.4e15;
-
-// let bigNr = 90071992547409920n;
-// typeError
-// let result = bigNr + intNr;
-
-// let bool1 = false;
-// let bool2 = true;
-// console.log(typeof bool1)
-
-// let str1 = "JavaScript is fun!";
-// let str2 = "JavaScript is fun!";
-// console.log("These two strings are the same:", str1 === str2);
-
-// let sym1 = Symbol("JavaScript is fun!");
-// let sym2 = Symbol("JavaScript is fun!");
-// console.log("These two Symbols are the same:", sym1 === sym2);
-
-// let unassigned;
-// console.log(unassigned);
-
-// let terribleThingToDo = undefined;
-// let lastname;
-// console.log("Same undefined:", lastname === terribleThingToDo);
-
-// let betterOption = null;
-// console.log("Same null:", lastname === betterOption);
-
-// let empty = null;
-
-// let nr1 = 2;
-// let nr2 = "2";
-// console.log(nr1 * nr2);
-
-// let nr1 = 2;
-// let nr2 = "2";
-// console.log(nr1 + nr2);
-
-// let nrToStr = 6;
-// nrToStr = String(nrToStr);
-// console.log(nrToStr, typeof nrToStr);
-
-// let strToNr = "12";
-// strToNr = Number(strToNr);
-// console.log(strToNr, typeof strToNr);
-
-// let strToBool = "any string will return true";
-// strToBool = Boolean(strToBool);
-// console.log(strToBool, typeof strToBool);
-
-// let nullToNr = null;
-// nullToNr = Number(nullToNr);
-// console.log("null", nullToNr, typeof nullToNr);
-
-// let strToNr = "";
-// strToNr = Number(strToNr);
-// console.log("empty string", strToNr, typeof strToNr);
-
-// let strToNr2 = "hello";
-// strToNr2 = Number(strToNr2);
-// console.log(strToNr2, typeof strToNr2);
-
-// let strToBool = "";
-// strToBool = Boolean(strToBool);
-// console.log(strToBool, typeof strToBool);
-
-// let strToBool2 = "false";
-// strToBool2 = Boolean(strToBool2);
-// console.log(strToBool2, typeof strToBool2);
-
-// let nr1 = 2;
-// let nr2 = "2";
-// console.log(nr1 + Number(nr2));
-
-// let str = "Hello, what's your name? Is it \"Mike\"?";
-// console.log(str);
-// let str2 = 'Hello, what\'s your name? Is it "Mike"?';
-// console.log(str2);
-
-// let str3 = "New \nline."
-// let str4 = "I'm containing a backslash: \\!";
-// console.log(str3);
-// console.log(str4);
-
-// let str = "Hello";
-// let nr = 7;
-// let bigNr = 12345678901234n;
-// let bool = true;
-// let sym = Symbol("unique");
-// let undef = undefined;
-// let unknown = null;
-
-// console.log("str", typeof str);
-// console.log("nr", typeof nr);
-// console.log("bigNr", typeof bigNr);
-// console.log("bool", typeof bool);
-// console.log("sym", typeof sym);
-// console.log("undef", typeof undef);
-// console.log("unknown", typeof unknown);
-
-// let nr1 = 12;
-// let nr2 = 14;
-// let str1 = "Hello ";
-// let str2 = "addition";
-// let result1 = nr1 + nr2;
-// let result2 = str1 + str2;
-// console.log(result1, result2);
-
-// let nr1 = 20;
-// let nr2 = 4;
-// let str1 = "Hi ";
-// let nr3 = 3;
-// let result1 = nr1 - nr2;
-// let result2 = str1 - nr3;
-// console.log(result1, result2);
-
-// let nr1 = 15;
-// let nr2 = 10;
-// let str1 = "Hi";
-// let nr3 = 3;
-// let result1 = nr1 * nr2;
-// let result2 = str1 * nr3;
-// console.log(result1, result2);
-
-// let nr1 = 30;
-// let nr2 = 5;
-// let result1 = nr1 / nr2;
-// console.log(result1);
-
-// let nr1 = 2;
-// let nr2 = 3;
-// let result1 = nr1 ** nr2;
-// console.log(result1);
-
-// let nr1 = 10;
-// let nr2 = 3;
-// let result1 = nr1 % nr2;
-// console.log(`${nr1} % ${nr2} = ${result1}`);
-
-// let nr3 = 8;
-// let nr4 = 2;
-// let result2 = nr3 % nr4;
-// console.log(`${nr3} % ${nr4} = ${result2}`);
-
-// let nr5 = 15;
-// let nr6 = 4;
-// let result3 = nr5 % nr6;
-// console.log(`${nr5} % ${nr6} = ${result3}`);
-
-// let nr = 4;
-// nr++;
-// console.log(nr);
-
-// let nr = 2;
-// console.log(nr++);
-// console.log(nr);
-
-// let nr = 2;
-// console.log(++nr);
-
-let nr1 = 4;
-let nr2 = 5;
-let nr3 = 2;
-console.log(nr1++ + ++nr2 * nr3++);

Chapter 2/Code Samples/ch2_strings_and_types.js

@@ -0,0 +1,25 @@
+let str = "Hello, what's your name? Is it \"Mike\"?";
+console.log(str);
+let str2 = 'Hello, what\'s your name? Is it "Mike"?';
+console.log(str2);
+
+let str3 = "New \nline."
+let str4 = "I'm containing a backslash: \\!";
+console.log(str3);
+console.log(str4);
+
+let str = "Hello";
+let nr = 7;
+let bigNr = 12345678901234n;
+let bool = true;
+let sym = Symbol("unique");
+let undef = undefined;
+let unknown = null;
+
+console.log("str", typeof str);
+console.log("nr", typeof nr);
+console.log("bigNr", typeof bigNr);
+console.log("bool", typeof bool);
+console.log("sym", typeof sym);
+console.log("undef", typeof undef);
+console.log("unknown", typeof unknown);

Chapter 2/Code Samples/ch2_types_and_operations.js

@@ -0,0 +1,64 @@
+// let nr1 = 12;
+// let nr2 = 14;
+// let str1 = "Hello ";
+// let str2 = "addition";
+// let result1 = nr1 + nr2;
+// let result2 = str1 + str2;
+// console.log(result1, result2);
+
+// let nr1 = 20;
+// let nr2 = 4;
+// let str1 = "Hi ";
+// let nr3 = 3;
+// let result1 = nr1 - nr2;
+// let result2 = str1 - nr3;
+// console.log(result1, result2);
+
+// let nr1 = 15;
+// let nr2 = 10;
+// let str1 = "Hi";
+// let nr3 = 3;
+// let result1 = nr1 * nr2;
+// let result2 = str1 * nr3;
+// console.log(result1, result2);
+
+// let nr1 = 30;
+// let nr2 = 5;
+// let result1 = nr1 / nr2;
+// console.log(result1);
+
+// let nr1 = 2;
+// let nr2 = 3;
+// let result1 = nr1 ** nr2;
+// console.log(result1);
+
+// let nr1 = 10;
+// let nr2 = 3;
+// let result1 = nr1 % nr2;
+// console.log(`${nr1} % ${nr2} = ${result1}`);
+
+// let nr3 = 8;
+// let nr4 = 2;
+// let result2 = nr3 % nr4;
+// console.log(`${nr3} % ${nr4} = ${result2}`);
+
+// let nr5 = 15;
+// let nr6 = 4;
+// let result3 = nr5 % nr6;
+// console.log(`${nr5} % ${nr6} = ${result3}`);
+
+// let nr = 4;
+// nr++;
+// console.log(nr);
+
+// let nr = 2;
+// console.log(nr++);
+// console.log(nr);
+
+// let nr = 2;
+// console.log(++nr);
+
+let nr1 = 4;
+let nr2 = 5;
+let nr3 = 2;
+console.log(nr1++ + ++nr2 * nr3++);

Chapter 2/Code Samples/ch2_undefined_null.js

@@ -0,0 +1,11 @@
+let unassigned;
+console.log(unassigned);
+
+let terribleThingToDo = undefined;
+let lastname;
+console.log("Same undefined:", lastname === terribleThingToDo);
+
+let betterOption = null;
+console.log("Same null:", lastname === betterOption);
+
+let empty = null;

Chapter 2/Code Samples/ch2_variables_basics.js

@@ -0,0 +1,10 @@
+let firstname = "Maria";
+firstname = "Jacky";
+
+let nr1 = 12;
+var nr2 = 8;
+const pi = 3.14159;
+
+// throws a TypeError
+const someConstant = 3;
+someConstant = 4;

Chapter 2/Code Samples/ch2_variables_number.js

@@ -0,0 +1,7 @@
+let intNr = 1;
+let decNr = 1.5;
+let expNr = 1.4e15;
+
+let bigNr = 90071992547409920n;
+// typeError
+let result = bigNr + intNr;

Chapter 2/Code Samples/ch2_variables_string.js

@@ -0,0 +1,6 @@
+let singleString = 'Hi there!';
+let doubleString = "How are you?";
+
+let language = "JavaScript";
+let message = `Let's learn ${language}`;
+console.log(message);

Chapter 3/Code Samples/ch3_arrays.js

@@ -0,0 +1,100 @@
+arr1 = new Array("purple", "green", "yellow");
+arr2 = ["black", "orange", "pink"];
+
+arr3 = new Array(10);
+arr4 = [10];
+
+console.log(arr3);
+console.log(arr4);
+
+cars = ["Toyota", "Renault", "Volkswagen"];
+console.log(cars[0]);
+console.log(cars[1]);
+console.log(cars[2]);
+console.log(cars[3]);
+console.log(cars[-1]);
+
+cars[0] = "Tesla";
+console.log(cars[0]);
+
+cars[3] = "Kia";
+cars[-1] = "Fiat";
+console.log(cars[3]);
+console.log(cars[-1]);
+
+colors = ["black", "orange", "pink"]
+booleans = [true, false, false, true];
+emptyArray = [];
+
+console.log("Length of colors:", colors.length);
+console.log("Length of booleans:", booleans.length);
+console.log("Length of emtpy array:", emptyArray.length);
+
+lastElement = colors[colors.length - 1];
+console.log(lastElement);
+
+numbers = [12, 24, 36];
+numbers[-1] = 0;
+numbers[5] = 48;
+console.log(numbers.length);
+
+console.log("numbers", numbers);
+
+favoriteFruits = ["grapefruit", "orange", "lemon"];
+favoriteFruits.push("tangerine");
+
+let lengthOfFavoriteFruits = favoriteFruits.push("lime");
+console.log(lengthOfFavoriteFruits);
+console.log(favoriteFruits);
+
+let arrOfShapes = ["circle", "triangle", "rectangle", "pentagon"];
+arrOfShapes.splice(2, 0, "square", "trapezoid");
+console.log(arrOfShapes);
+
+let arr5 = [1, 2, 3];
+let arr6 = [4, 5, 6];
+let arr7 = arr5.concat(arr6);
+console.log(arr7);
+
+let arr8 = arr7.concat(7, 8, 9);
+console.log(arr8);
+
+arr8.pop();
+console.log(arr8);
+
+arr8.shift();
+console.log(arr8);
+
+arr8.splice(1, 3);
+console.log(arr8);
+
+delete arr8[0];
+console.log(arr8); 
+
+let findValue = arr8.find(() => e === 6);
+let findValue2 = arr8.find(() => e === 8);
+console.log(findValue, findValue2);
+
+let findIndex = arr8.indexOf(6);
+let findIndex2 = arr8.indexOf(10);
+let findIndex3 = arr8.indexOf(6, 2);
+console.log(findIndex, findIndex2, findIndex3);
+
+let animals = ["dog", "horse", "cat", "platypus", "dog"]
+let lastDog = animals.lastIndexOf("dog");
+console.log(lastDog);
+
+
+let names = ["James", "Alicia", "Fatiha", "Maria", "Bert"];
+names.sort();
+
+let ages = [18, 72, 33, 56, 40];
+ages.sort();
+
+console.log(names);
+console.log(ages);
+
+names.reverse();
+console.log(names);
+
+console.log(typeof arr1);

Chapter 3/Code Samples/ch3_objects.js

@@ -1,104 +1,3 @@
-arr1 = new Array("purple", "green", "yellow");
-arr2 = ["black", "orange", "pink"];
-
-arr3 = new Array(10);
-arr4 = [10];
-
-console.log(arr3);
-console.log(arr4);
-
-cars = ["Toyota", "Renault", "Volkswagen"];
-console.log(cars[0]);
-console.log(cars[1]);
-console.log(cars[2]);
-console.log(cars[3]);
-console.log(cars[-1]);
-
-cars[0] = "Tesla";
-console.log(cars[0]);
-
-cars[3] = "Kia";
-cars[-1] = "Fiat";
-console.log(cars[3]);
-console.log(cars[-1]);
-
-colors = ["black", "orange", "pink"]
-booleans = [true, false, false, true];
-emptyArray = [];
-
-console.log("Length of colors:", colors.length);
-console.log("Length of booleans:", booleans.length);
-console.log("Length of emtpy array:", emptyArray.length);
-
-lastElement = colors[colors.length - 1];
-console.log(lastElement);
-
-numbers = [12, 24, 36];
-numbers[-1] = 0;
-numbers[5] = 48;
-console.log(numbers.length);
-
-console.log("numbers", numbers);
-
-favoriteFruits = ["grapefruit", "orange", "lemon"];
-favoriteFruits.push("tangerine");
-
-let lengthOfFavoriteFruits = favoriteFruits.push("lime");
-console.log(lengthOfFavoriteFruits);
-console.log(favoriteFruits);
-
-let arrOfShapes = ["circle", "triangle", "rectangle", "pentagon"];
-arrOfShapes.splice(2, 0, "square", "trapezoid");
-console.log(arrOfShapes);
-
-let arr5 = [1, 2, 3];
-let arr6 = [4, 5, 6];
-let arr7 = arr5.concat(arr6);
-console.log(arr7);
-
-let arr8 = arr7.concat(7, 8, 9);
-console.log(arr8);
-
-arr8.pop();
-console.log(arr8);
-
-arr8.shift();
-console.log(arr8);
-
-arr8.splice(1, 3);
-console.log(arr8);
-
-delete arr8[0];
-console.log(arr8); 
-
-let findValue = arr8.find(() => e === 6);
-let findValue2 = arr8.find(() => e === 8);
-console.log(findValue, findValue2);
-
-let findIndex = arr8.indexOf(6);
-let findIndex2 = arr8.indexOf(10);
-let findIndex3 = arr8.indexOf(6, 2);
-console.log(findIndex, findIndex2, findIndex3);
-
-let animals = ["dog", "horse", "cat", "platypus", "dog"]
-let lastDog = animals.lastIndexOf("dog");
-console.log(lastDog);
-
-
-let names = ["James", "Alicia", "Fatiha", "Maria", "Bert"];
-names.sort();
-
-let ages = [18, 72, 33, 56, 40];
-ages.sort();
-
-console.log(names);
-console.log(ages);
-
-names.reverse();
-console.log(names);
-
-console.log(typeof arr1);
-
 let dog = { dogName: "JavaScript", 
             weight: 2.4, 
             color: "brown", 

Chapter 4/Code Samples/ch4_if.js

@@ -0,0 +1,49 @@
+// let rain = true;
+
+// if(rain){
+//   console.log("** Taking my umbrella when I need to go outside **");
+// } else {
+//   console.log("** I can leave my umbrella at home **");
+// }
+
+// if(expression) {
+//   // code associated with the if block
+//   // will only be executed if the expression is true
+// } else {
+//   // code associated with the else block
+//   // we don't need an else block, it is optional
+//   // this code will only be executed if the expression is false
+// }
+
+let age = 16;
+
+if(age < 18) {
+  console.log("We're very sorry, but you can't get in under 18");
+} else {
+  console.log("Welcome!");
+}
+
+if(age < 3){
+  console.log("Access is free under three.");
+} else if(age >=3 && age < 12) {
+  console.log("With the child discount, the access fee is 5 dollar");
+} else if(age >=12 && age < 65) {
+  console.log("A regular ticket costs 10 dollar.");
+} else if(age >= 65) {
+  console.log("A ticket is 7 dollars.");
+}
+
+if(age < 3){
+  console.log("Access is free under three.");
+} else if(age < 12) {
+  console.log("With the child discount, the access fee is 5 dollar");
+} else if(age < 65) {
+  console.log("A regular ticket costs 10 dollar.");
+} else if(age >= 65) {
+  console.log("A ticket is 7 dollars.");
+}
+
+let access = age < 18 ? "denied" : "allowed";
+console.log(access);
+
+age < 18 ? console.log("denied") : console.log("allowed");

Chapter 4/Code Samples/ch4_switch.js

@@ -1,53 +1,3 @@
-// let rain = true;
-
-// if(rain){
-//   console.log("** Taking my umbrella when I need to go outside **");
-// } else {
-//   console.log("** I can leave my umbrella at home **");
-// }
-
-// if(expression) {
-//   // code associated with the if block
-//   // will only be executed if the expression is true
-// } else {
-//   // code associated with the else block
-//   // we don't need an else block, it is optional
-//   // this code will only be executed if the expression is false
-// }
-
-let age = 16;
-
-if(age < 18) {
-  console.log("We're very sorry, but you can't get in under 18");
-} else {
-  console.log("Welcome!");
-}
-
-if(age < 3){
-  console.log("Access is free under three.");
-} else if(age >=3 && age < 12) {
-  console.log("With the child discount, the access fee is 5 dollar");
-} else if(age >=12 && age < 65) {
-  console.log("A regular ticket costs 10 dollar.");
-} else if(age >= 65) {
-  console.log("A ticket is 7 dollars.");
-}
-
-if(age < 3){
-  console.log("Access is free under three.");
-} else if(age < 12) {
-  console.log("With the child discount, the access fee is 5 dollar");
-} else if(age < 65) {
-  console.log("A regular ticket costs 10 dollar.");
-} else if(age >= 65) {
-  console.log("A ticket is 7 dollars.");
-}
-
-let access = age < 18 ? "denied" : "allowed";
-console.log(access);
-
-age < 18 ? console.log("denied") : console.log("allowed");
-
 let activity = "Lunch";
 
 if(activity === "Get up") {

Chapter 5/Code Samples/ch5_break_continue_nested.js

@@ -1,127 +1,3 @@
-let i = 0;
-while (i < 10) {
-  console.log(i);
-  i++;
-}
-
-let someArray = ["Mike", "Antal", "Marc", "Emir", "Louiza", "Jacky"];
-let notFound = true;
-
-while (notFound && someArray.length > 0) {
-  if (someArray[0] === "Louiza") {
-    console.log("Found her!");
-    notFound = false;
-  } else {
-    someArray.shift();
-  }
-}
-
-console.log(someArray);
-
-let nr1 = 0;
-let nr2 = 1;
-let temp;
-fibonacciArray = [];
-
-while (fibonacciArray.length < 25) {
-  fibonacciArray.push(nr1);
-  temp = nr1 + nr2;
-  nr1 = nr2;
-  nr2 = temp;
-}
-
-console.log(fibonacciArray);
-
-do {
-  // code to be executed if the condition is true
-} while (true);
-
-let number;
-do {
-  number = prompt("Please enter a number between 0 and 100: ");
-} while (!(number >= 0 && number < 100));
-
-for (let i = 0; i < 10; i++) {
-  console.log(i);
-}
-
-let arr = [];
-for (let i = 0; i < 100; i++) {
-  arr.push(i);
-}
-
-let arr = [];
-for (let i = 0; i < 100; i = i + 2) {
-  arr.push(i);
-}
-
-let arrOfArrays = [];
-for (let i = 0; i < 3; i++) {
-  arrOfArrays.push([]);
-  for (let j = 0; j < 7; j++) {
-    arrOfArrays[i].push(j);
-  }
-}
-
-console.log(arrOfArrays);
-
-let names = ["chantal", "john", "maxime", "bobbi", "jair"];
-for (let i = 0; i < names.length; i++) {
-  console.log(names[i]);
-}
-
-//let names = ["chantal", "john", "maxime", "bobbi", "jair"];
-for (let i = 0; i < names.length; i++) {
-  names[i] = "hello " + names[i];
-}
-console.log(names);
-
-for (let name of names) {
-  console.log(name);
-}
-
-let car = {
-  model: "Golf",
-  make: "Volkswagen",
-  year: 1999,
-  color: "black",
-};
-
-for (let prop in car) {
-  console.log(car[prop]);
-}
-
-for (let prop in car) {
-  console.log(prop);
-}
-
-let cars = [
-  {
-    model: "Golf",
-    make: "Volkswagen",
-    year: 1999,
-    color: "black",
-  },
-  {
-    model: "Picanto",
-    make: "Kia",
-    year: 2020,
-    color: "red",
-  },
-  {
-    model: "Peugeot",
-    make: "208",
-    year: 2021,
-    color: "black",
-  },
-  {
-    model: "Fiat",
-    make: "Punto",
-    year: 2020,
-    color: "black",
-  },
-];
-
 for (let i = 0; i < 10; i++) {
   console.log(i);
   if (i === 4) {

Chapter 5/Code Samples/ch5_do_while.js

@@ -0,0 +1,8 @@
+do {
+  // code to be executed if the condition is true
+} while (true);
+
+let number;
+do {
+  number = prompt("Please enter a number between 0 and 100: ");
+} while (!(number >= 0 && number < 100));

Chapter 5/Code Samples/ch5_for.js

@@ -0,0 +1,34 @@
+for (let i = 0; i < 10; i++) {
+  console.log(i);
+}
+
+let arr = [];
+for (let i = 0; i < 100; i++) {
+  arr.push(i);
+}
+
+let arr = [];
+for (let i = 0; i < 100; i = i + 2) {
+  arr.push(i);
+}
+
+let arrOfArrays = [];
+for (let i = 0; i < 3; i++) {
+  arrOfArrays.push([]);
+  for (let j = 0; j < 7; j++) {
+    arrOfArrays[i].push(j);
+  }
+}
+
+console.log(arrOfArrays);
+
+let names = ["chantal", "john", "maxime", "bobbi", "jair"];
+for (let i = 0; i < names.length; i++) {
+  console.log(names[i]);
+}
+
+//let names = ["chantal", "john", "maxime", "bobbi", "jair"];
+for (let i = 0; i < names.length; i++) {
+  names[i] = "hello " + names[i];
+}
+console.log(names);

Chapter 5/Code Samples/ch5_for_in_for_of.js

@@ -0,0 +1,45 @@
+for (let name of names) {
+  console.log(name);
+}
+
+let car = {
+  model: "Golf",
+  make: "Volkswagen",
+  year: 1999,
+  color: "black",
+};
+
+for (let prop in car) {
+  console.log(car[prop]);
+}
+
+for (let prop in car) {
+  console.log(prop);
+}
+
+let cars = [
+  {
+    model: "Golf",
+    make: "Volkswagen",
+    year: 1999,
+    color: "black",
+  },
+  {
+    model: "Picanto",
+    make: "Kia",
+    year: 2020,
+    color: "red",
+  },
+  {
+    model: "Peugeot",
+    make: "208",
+    year: 2021,
+    color: "black",
+  },
+  {
+    model: "Fiat",
+    make: "Punto",
+    year: 2020,
+    color: "black",
+  },
+];

Chapter 5/Code Samples/ch5_while.js

@@ -0,0 +1,33 @@
+let i = 0;
+while (i < 10) {
+  console.log(i);
+  i++;
+}
+
+let someArray = ["Mike", "Antal", "Marc", "Emir", "Louiza", "Jacky"];
+let notFound = true;
+
+while (notFound && someArray.length > 0) {
+  if (someArray[0] === "Louiza") {
+    console.log("Found her!");
+    notFound = false;
+  } else {
+    someArray.shift();
+  }
+}
+
+console.log(someArray);
+
+let nr1 = 0;
+let nr2 = 1;
+let temp;
+fibonacciArray = [];
+
+while (fibonacciArray.length < 25) {
+  fibonacciArray.push(nr1);
+  temp = nr1 + nr2;
+  nr1 = nr2;
+  nr2 = temp;
+}
+
+console.log(fibonacciArray);

Chapter 6/Code Samples/ch6_anonymous_nested_callbacks.js

@@ -0,0 +1,59 @@
+function doingStuffAnonymously() {
+  console.log("Not so secret though.");
+}
+
+let functionVariable = function () {
+  console.log("Not so secret though.");
+};
+
+functionVariable();
+
+function doFlexibleStuff(executeStuff) {
+  executeStuff();
+  console.log("Inside doFlexibleStuffFunction.");
+}
+
+doFlexibleStuff(functionVariable);
+
+let anotherFunctionVariable = function () {
+  console.log("Another anonymous function implementation.");
+};
+
+doFlexibleStuff(anotherFunctionVariable);
+
+function doOuterFunctionStuff(nr) {
+  console.log("Outer function");
+  doInnerFunctionStuff(nr);
+  function doInnerFunctionStuff(x) {
+    console.log(x + 7);
+    console.log("I can access outer variables:", nr);
+  }
+}
+
+doOuterFunctionStuff(2);
+
+function doOuterFunctionStuff(nr) {
+  doInnerFunctionStuff(nr);
+  function doInnerFunctionStuff(x) {
+    let z = 10;
+  }
+  console.log("Not accessible:", z);
+}
+
+doOuterFunctionStuff(2);
+
+function doOuterFunctionStuff(nr) {
+  doInnerFunctionStuff(nr);
+  function doInnerFunctionStuff(x) {
+    let z = 10;
+  }
+}
+
+doInnerFunctionStuff(3);
+
+let youGotThis = function () {
+  console.log("You're doing really well, keep coding!");
+};
+
+setTimeout(youGotThis, 1000);
+setInterval(youGotThis, 1000);

Chapter 6/Code Samples/ch6_functions_params.js

@@ -0,0 +1,51 @@
+function hiThere() {
+  let you = prompt("What's your name? ");
+  console.log("Hello", you, "!");
+}
+
+hiThere();
+
+console.log("this is an argument");
+prompt("argument here too");
+
+let arr = [];
+arr.push("argument");
+
+function addTwoNumbers(x, y) {
+  console.log(x + y);
+}
+
+addTwoNumbers(3, 4);
+addTwoNumbers(12, -90);
+
+function myFunc(param1, param2) {
+  // code of the function;
+}
+
+myFunc("arg1", "arg2");
+
+function addTwoNumbers(x = 2, y = 3) {
+  console.log(x + y);
+}
+
+addTwoNumbers();
+addTwoNumbers(6, 6);
+addTwoNumbers(10);
+
+let favoriteSubject = prompt("What is your favorite subject?");
+
+let result = addTwoNumbers(4, 5);
+console.log(result);
+
+function addTwoNumbers(x, y) {
+  return x + y;
+}
+
+let results = [];
+
+for (let i = 0; i < 10; i++) {
+  let result = addTwoNumbers(i, 2 * i);
+  results.push(result);
+}
+
+console.log(results);

Chapter 6/Code Samples/ch6_recursion.js

@@ -0,0 +1,35 @@
+function getRecursive(nr) {
+  console.log(nr);
+  getRecursive(--nr);
+}
+
+getRecursive(3);
+
+function logRecursive(nr) {
+  console.log("Started function:", nr);
+  if (nr > 0) {
+    logRecursive(nr - 1);
+  } else {
+    console.log("done with recursion");
+  }
+  console.log("Ended function:", nr);
+}
+
+logRecursive(3);
+
+function getRecursive(nr) {
+  console.log(nr);
+  if (nr > 0) {
+    getRecursive(--nr);
+  }
+}
+
+getRecursive(3);
+
+function calcFactorial(nr) {
+  if (nr === 0) {
+    return 1;
+  } else {
+    return nr * calcFactorial(--nr);
+  }
+}

Chapter 6/Code Samples/ch6_scope.js

@@ -0,0 +1,72 @@
+function testAvailability(x) {
+  console.log("Available here:", x);
+}
+
+testAvailability("Hi!");
+console.log("Not available here:", x);
+
+function testAvailability() {
+  let y = "Local variable!";
+  console.log("Available here:", y);
+}
+
+testAvailability();
+console.log("Not available here:", y);
+
+function testAvailability() {
+  let y = "I'll return";
+  console.log("Available here:", y);
+  return y;
+}
+
+let z = testAvailability();
+console.log("Outside the function:", z);
+console.log("Not available here:", y);
+
+let globalVar = "Accessible everywhere!";
+console.log("Outside function:", globalVar);
+
+function creatingNewScope(x) {
+  console.log("Access to global variables from inside functions.", globalVar);
+}
+
+creatingNewScope("some parameter");
+
+console.log("Still available:", globalVar);
+
+function doingStuff() {
+  if (true) {
+    var x = "local";
+  }
+  console.log(x);
+}
+
+doingStuff();
+
+function doingStuff() {
+  if (true) {
+    let x = "local";
+  }
+  console.log(x);
+}
+
+doingStuff();
+
+let x = "global";
+
+function doingStuff() {
+  let x = "local";
+  console.log(x);
+}
+
+doingStuff();
+
+var x = "global";
+
+function confuseReader() {
+  x = "Guess my scope...";
+  console.log("Inside the function:", x);
+}
+
+confuseReader();
+console.log("Outside of function:", x);

Chapter 6/Code Samples/ch6_snippets.js

@@ -1,220 +0,0 @@
-function hiThere() {
-  let you = prompt("What's your name? ");
-  console.log("Hello", you, "!");
-}
-
-hiThere();
-
-console.log("this is an argument");
-prompt("argument here too");
-
-let arr = [];
-arr.push("argument");
-
-function addTwoNumbers(x, y) {
-  console.log(x + y);
-}
-
-addTwoNumbers(3, 4);
-addTwoNumbers(12, -90);
-
-function myFunc(param1, param2) {
-  // code of the function;
-}
-
-myFunc("arg1", "arg2");
-
-function addTwoNumbers(x = 2, y = 3) {
-  console.log(x + y);
-}
-
-addTwoNumbers();
-addTwoNumbers(6, 6);
-addTwoNumbers(10);
-
-let favoriteSubject = prompt("What is your favorite subject?");
-
-let result = addTwoNumbers(4, 5);
-console.log(result);
-
-function addTwoNumbers(x, y) {
-  return x + y;
-}
-
-let results = [];
-
-for (let i = 0; i < 10; i++) {
-  let result = addTwoNumbers(i, 2 * i);
-  results.push(result);
-}
-
-console.log(results);
-
-function testAvailability(x) {
-  console.log("Available here:", x);
-}
-
-testAvailability("Hi!");
-console.log("Not available here:", x);
-
-function testAvailability() {
-  let y = "Local variable!";
-  console.log("Available here:", y);
-}
-
-testAvailability();
-console.log("Not available here:", y);
-
-function testAvailability() {
-  let y = "I'll return";
-  console.log("Available here:", y);
-  return y;
-}
-
-let z = testAvailability();
-console.log("Outside the function:", z);
-console.log("Not available here:", y);
-
-let globalVar = "Accessible everywhere!";
-console.log("Outside function:", globalVar);
-
-function creatingNewScope(x) {
-  console.log("Access to global variables from inside functions.", globalVar);
-}
-
-creatingNewScope("some parameter");
-
-console.log("Still available:", globalVar);
-
-function doingStuff() {
-  if (true) {
-    var x = "local";
-  }
-  console.log(x);
-}
-
-doingStuff();
-
-function doingStuff() {
-  if (true) {
-    let x = "local";
-  }
-  console.log(x);
-}
-
-doingStuff();
-
-let x = "global";
-
-function doingStuff() {
-  let x = "local";
-  console.log(x);
-}
-
-doingStuff();
-
-var x = "global";
-
-function confuseReader() {
-  x = "Guess my scope...";
-  console.log("Inside the function:", x);
-}
-
-confuseReader();
-console.log("Outside of function:", x);
-
-function getRecursive(nr) {
-  console.log(nr);
-  getRecursive(--nr);
-}
-
-getRecursive(3);
-
-function logRecursive(nr) {
-  console.log("Started function:", nr);
-  if (nr > 0) {
-    logRecursive(nr - 1);
-  } else {
-    console.log("done with recursion");
-  }
-  console.log("Ended function:", nr);
-}
-
-logRecursive(3);
-
-function getRecursive(nr) {
-  console.log(nr);
-  if (nr > 0) {
-    getRecursive(--nr);
-  }
-}
-
-getRecursive(3);
-
-function calcFactorial(nr) {
-  if (nr === 0) {
-    return 1;
-  } else {
-    return nr * calcFactorial(--nr);
-  }
-}
-
-function doingStuffAnonymously() {
-  console.log("Not so secret though.");
-}
-
-let functionVariable = function () {
-  console.log("Not so secret though.");
-};
-
-functionVariable();
-
-function doFlexibleStuff(executeStuff) {
-  executeStuff();
-  console.log("Inside doFlexibleStuffFunction.");
-}
-
-doFlexibleStuff(functionVariable);
-
-let anotherFunctionVariable = function () {
-  console.log("Another anonymous function implementation.");
-};
-
-doFlexibleStuff(anotherFunctionVariable);
-
-function doOuterFunctionStuff(nr) {
-  console.log("Outer function");
-  doInnerFunctionStuff(nr);
-  function doInnerFunctionStuff(x) {
-    console.log(x + 7);
-    console.log("I can access outer variables:", nr);
-  }
-}
-
-doOuterFunctionStuff(2);
-
-function doOuterFunctionStuff(nr) {
-  doInnerFunctionStuff(nr);
-  function doInnerFunctionStuff(x) {
-    let z = 10;
-  }
-  console.log("Not accessible:", z);
-}
-
-doOuterFunctionStuff(2);
-
-function doOuterFunctionStuff(nr) {
-  doInnerFunctionStuff(nr);
-  function doInnerFunctionStuff(x) {
-    let z = 10;
-  }
-}
-
-doInnerFunctionStuff(3);
-
-let youGotThis = function () {
-  console.log("You're doing really well, keep coding!");
-};
-
-setTimeout(youGotThis, 1000);
-setInterval(youGotThis, 1000);

Chapter 8/Code Samples/ch8_arrays.js

@@ -0,0 +1,41 @@
+let arr = ["grapefruit", 4, "hello", 5.6, true];
+function printStuff(element, index) {
+    console.log("Printing stuff:", element, "on array position:", index);
+}
+
+let arr = ["squirrel", 5, "Tjed", new Date(), true];
+function checkString(element, index) {
+return typeof element === "string";
+}
+let filterArr = arr.filter(checkString);
+console.log(filterArr);
+
+console.log(arr.every(checkString));
+
+arr = ["grapefruit", 4, "hello", 5.6, true];
+arr.copyWithin(0, 3, 4);
+
+arr = ["grapefruit", 4, "hello", 5.6, true];
+arr.copyWithin(0, 3, 5);
+
+let arr = ["grapefruit", 4, "hello", 5.6, true, false];
+arr.copyWithin(0, 3);
+console.log(arr);
+
+let arr = [1, 2, 3, 4];
+let mapped_arr = arr.map(x => x + 1);
+console.log(mapped_arr);
+
+let bb = ["so", "bye", "bye", "love"];
+console.log(bb.lastIndexOf("bye"));
+
+let bb = ["so", "bye", "bye", "love"];
+console.log(bb.lastIndexOf("hi"));
+
+let letters = ["a", "b", "c"];
+let x = letters.join();
+console.log(x);
+
+let letters = ["a", "b", "c"];
+let x = letters.join('-');
+console.log(x);

Chapter 8/Code Samples/ch8_dates.js

@@ -0,0 +1,50 @@
+let currentDateTime = new Date();
+console.log(currentDateTime);
+
+let now2 = Date.now();
+console.log(now2);
+
+let milliDate = new Date(1000);
+console.log(milliDate);
+
+let stringDate = new Date("Sat Jun 05 2021 12:40:12 GMT+0200");
+console.log(stringDate);
+
+let specificDate = new Date(2022, 1, 10, 12, 10, 15, 100);
+console.log(specificDate);
+
+let d = new Date();
+console.log("Day of week:", d.getDay());
+console.log("Day of month:", d.getDate());
+console.log("Month:", d.getMonth());
+console.log("Year:", d.getFullYear());
+console.log("Seconds:", d.getSeconds());
+console.log("Milliseconds:", d.getMilliseconds());
+console.log("Time:", d.getTime());
+
+d.setFullYear(2010);
+console.log(d);
+
+d.setMonth(9);
+console.log(d);
+
+d.setDate(10);
+console.log(d);
+
+d.setHours(10);
+console.log(d);
+
+d.setTime(1622889770682);
+console.log(d);
+
+let d1 = Date.parse("June 5, 2021");
+console.log(d1);
+
+let d2 = Date.parse("6/5/2021");
+console.log(d2);
+
+console.log(d.toDateString());
+
+console.log(d.toLocaleDateString());
+
+

Chapter 8/Code Samples/ch8_decode_encode.js

@@ -0,0 +1,12 @@
+let uri = "https://www.example.com/submit?name=maaike van putten";
+let encoded_uri = encodeURI(uri);
+console.log("Encoded:", encoded_uri);
+let decoded_uri = decodeURI(encoded_uri);
+console.log("Decoded:", decoded_uri);
+
+let uri = "https://www.example.com/submit?name=maaike van putten";
+let encoded_uri = encodeURIComponent(uri);
+console.log("Encoded:", encoded_uri);
+let decoded_uri = decodeURIComponent(encoded_uri);
+console.log("Decoded:", decoded_uri);
+

Chapter 8/Code Samples/ch8_eval.html

@@ -0,0 +1,12 @@
+<html>
+
+<body>
+    <input onchange="go(this)"></input>
+    <script>
+        function go(e) {
+            eval(e.value);
+        }
+    </script>
+</body>
+
+</html>

Chapter 8/Code Samples/ch8_examples.js

@@ -0,0 +1,7 @@
+let s = "Hello";
+console.log(
+    s.concat(" there!")
+        .toUpperCase()
+        .replace("THERE", "you")
+        .concat(" You're amazing!")
+);

Chapter 8/Code Samples/ch8_global_nan.js

@@ -0,0 +1,3 @@
+let x = 7;
+console.log(Number.isNaN(x));
+console.log(isNaN(x));

Chapter 8/Code Samples/ch8_math.js

@@ -0,0 +1,43 @@
+let highest = Math.max(2, 56, 12, 1, 233, 4);
+console.log(highest);
+
+let lowest = Math.min(2, 56, 12, 1, 233, 4);
+console.log(lowest);
+
+let highestOfWords = Math.max("hi", 3, "bye");
+console.log(highestOfWords);
+
+let result = Math.sqrt(64);
+console.log(result);
+
+let result2 = Math.pow(5, 3);
+console.log(result2);
+
+let x = 6.78;
+let y = 5.34;
+console.log("X:", x, "becomes", Math.round(x));
+console.log("Y:", y, "becomes", Math.round(y));
+
+console.log("X:", x, "becomes", Math.ceil(x));
+console.log("Y:", y, "becomes", Math.ceil(y));
+
+let negativeX = -x;
+let negativeY = -y;
+console.log("negativeX:", negativeX, "becomes", Math.ceil(negativeX));
+console.log("negativeY:", negativeY, "becomes", Math.ceil(negativeY));
+
+console.log("X:", x, "becomes", Math.floor(x));
+console.log("Y:", y, "becomes", Math.floor(y));
+
+console.log("negativeX:", negativeX, "becomes", Math.floor(negativeX));
+console.log("negativeY:", negativeY, "becomes", Math.floor(negativeY));
+
+console.log("X:", x, "becomes", Math.trunc(x));
+console.log("Y:", y, "becomes", Math.trunc(y));
+
+let x = 2;
+let exp = Math.exp(x);
+console.log("Exp:", exp);
+let log = Math.log(exp);
+console.log("Log:", log);
+

Chapter 8/Code Samples/ch8_numbers.js

@@ -0,0 +1,36 @@
+let x = 34;
+console.log(isNaN(x));
+console.log(!isNaN(x));
+let str = "hi";
+console.log(isNaN(str));
+
+let str1 = "5";
+console.log(isNaN(str1));
+
+let x = 3;
+let str = "finite";
+console.log(isFinite(x));
+console.log(isFinite(str));
+console.log(isFinite(Infinity));
+console.log(isFinite(10 / 0));
+
+let x = 3;
+let str = "integer";
+console.log(Number.isInteger(x));
+console.log(Number.isInteger(str));
+console.log(Number.isInteger(Infinity));
+console.log(Number.isInteger(2.4));
+
+let x = 1.23456;
+let newX = x.toFixed(2);
+
+let x = 1.23456;
+let newX = x.toFixed(3);
+console.log(x, newX);
+
+let x = 1.23456;
+let newX = x.toPrecision(2);
+
+let x = 1.23456;
+let newX = x.toPrecision(4);
+console.log(newX)

Chapter 8/Code Samples/ch8_parsing.js

@@ -0,0 +1,36 @@
+let str_int = "6";
+let int_int = parseInt(str_int);
+console.log("Type of ", int_int, "is", typeof int_int);
+
+
+let str_float = "7.6";
+let int_float = parseInt(str_float);
+console.log("Type of", int_float, "is", typeof int_float);
+
+let str_binary = "0b101";
+let int_binary = parseInt(str_binary);
+console.log("Type of", int_binary, "is", typeof int_binary);
+
+let str_nan = "hello!";
+let int_nan = parseInt(str_nan);
+console.log("Type of", int_nan, "is", typeof int_nan);
+
+let str_float = "7.6";
+let float_float = parseFloat(str_float);
+console.log("Type of", float_float, "is", typeof float_float);
+
+let str_version_nr = "2.3.4";
+let float_version_nr = parseFloat(str_version_nr);
+console.log("Type of", float_version_nr, "is", typeof float_version_nr);
+
+let str_int = "6";
+let float_int = parseFloat(str_int);
+console.log("Type of", float_int, "is", typeof float_int);
+
+let str_binary = "0b101";
+let float_binary = parseFloat(str_binary);
+console.log("Type of", float_binary, "is", typeof float_binary);
+
+let str_nan = "hello!";
+let float_nan = parseFloat(str_nan);
+console.log("Type of", float_nan, "is", typeof float_nan);

Chapter 8/Code Samples/ch8_strings.js

@@ -0,0 +1,95 @@
+let s1 = "Hello ";
+let s2 = "JavaScript";
+let result = s1.concat(s2);
+console.log(result);
+
+let result = "Hello JavaScript";
+let arr_result = result.split(" ");
+console.log(arr_result);
+
+let favoriteFruits = "strawberry,watermelon,grapefruit";
+let arr_fruits = favoriteFruits.split(",");
+console.log(arr_fruits);
+
+let letters = ["a", "b", "c"];
+let x = letters.join();
+console.log(x);
+
+let letters = ["a", "b", "c"];
+let x = letters.join('-');
+console.log(x);
+
+let poem = "Roses are red, violets are blue, if I can do JS, then you can too!";
+let index_re = poem.indexOf("re");
+console.log(index_re);
+
+let indexNotFound = poem.indexOf("python");
+console.log(indexNotFound);
+
+if (poem.indexOf("python") != -1) {
+    // do stuff
+}
+
+let searchStr = "When I see my fellow, I say hello";
+let pos = searchStr.search("lo");
+console.log(pos);
+
+let notFound = searchStr.search("JavaScript");
+console.log(notFound);
+
+let lastIndex_re = poem.lastIndexOf("re");
+console.log(lastIndex_re);
+
+let pos1 = poem.charAt(10);
+console.log(pos1);
+
+let pos2 = poem.charAt(1000);
+console.log(pos2);
+
+let str = "Create a substring";
+let substr1 = str.slice(5);
+let substr2 = str.slice(0,3);
+console.log("1:", substr1);
+console.log("2:", substr2);
+
+let hi = "Hi buddy";
+let new_hi = hi.replace("buddy", "Pascal");
+console.log(new_hi);
+
+let new_hi2 = hi.replace("not there", "never there");
+console.log(new_hi2);
+
+let s3 = "hello hello";
+let new_s3 = s3.replace("hello", "oh");
+console.log(new_s3);
+
+let s3 = "hello hello";
+let new_s3 = s3.replaceAll("hello", "oh");
+console.log(new_s3);
+
+let low_bye = "bye!";
+let up_bye = low_bye.toUpperCase();
+console.log(up_bye);
+
+let caps = "HI HOW ARE YOU?";
+let fixed_caps = caps.toLowerCase();
+console.log(fixed_caps);
+
+let caps = "HI HOW ARE YOU?";
+let fixed_caps = caps.toLowerCase();
+let first_capital = fixed_caps.charAt(0).toUpperCase().concat(fixed_caps.slice(1));
+console.log(first_capital);
+
+let encouragement = "You are doing great, keep up the good work!";
+let bool_start = encouragement.startsWith("You");
+console.log(bool_start);
+
+let bool_start2 = encouragement.startsWith("you");
+console.log(bool_start2);
+
+let bool_start3 = encouragement.toLowerCase().startsWith("you");
+console.log(bool_start3);
+
+let bool_end = encouragement.endsWith("Something else");
+console.log(bool_end);
+