reorganizing

Chapter 03/Code Samples/ch3_arrays.js

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+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 03/Code Samples/ch3_objects.js

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+let dog = { dogName: "JavaScript", 
+            weight: 2.4, 
+            color: "brown", 
+            breed: "chihuahua", 
+            age: 3, 
+            burglarBiter: true 
+          };
+
+let dogColor1 = dog["color"];
+let dogColor2 = dog.color;
+
+
+dog["color"] = "blue";
+dog.weight = 2.3;
+
+let company = { companyName: "Healthy Candy",
+                activity: "food manufacturing",
+                address: {
+                  street: "2nd street",
+                  number: "123",
+                  zipcode: "33116",
+                  city: "Miami",
+                  state: "Florida"
+                },
+                yearOfEstablishment: 2021 
+              };
+
+company.address.zipcode = "33117";
+company["address"]["number"] = "100";
+
+console.log(company);
+
+let company2 = { companyName: "Healthy Candy",
+                activities: ["food manufacturing", "improving kids' health", "manufacturing toys"],
+                address: {
+                  street: "2nd street",
+                  number: "123",
+                  zipcode: "33116",
+                  city: "Miami",
+                  state: "Florida"
+                },
+                yearOfEstablishment: 2021 
+              };
+
+let activity = company2.activities[1];
+console.log(activity);
+
+let addresses = [{
+    street: "2nd street",
+    number: "123",
+    zipcode: "33116",
+    city: "Miami",
+    state: "Florida"
+  },
+  {
+    street: "1st West avenue",
+    number: "5",
+    zipcode: "75001",
+    city: "Addison",
+    state: "Texas"
+  }];
+
+  let company3 = { companyName: "Healthy Candy",
+                    activities: ["food manufacturing", "improving kids' health", "manufacturing toys"],
+                    address: [{
+                      street: "2nd street",
+                      number: "123",
+                      zipcode: "33116",
+                      city: "Miami",
+                      state: "Florida"
+                    },
+                    {
+                      street: "1st West avenue",
+                      number: "5",
+                      zipcode: "75001",
+                      city: "Addison",
+                      state: "Texas"
+                    }],
+                    yearOfEstablishment: 2021 
+                  };