reorganizing

PacktPublishing · Dec 2, 2021 · 67a8d8a · 67a8d8a
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diff --git a/.DS_Store b/.DS_Store
diff --git a/Chapter 01/.DS_Store b/Chapter 01/.DS_Store
diff --git a/...r 01/Code Samples/Please put your code files in this directory with naming_convention.txt b/...r 01/Code Samples/Please put your code files in this directory with naming_convention.txt
diff --git a/Chapter 01/Code Samples/ch1_alert.js b/Chapter 01/Code Samples/ch1_alert.js
@@ -0,0 +1,2 @@
+//alert("Saying hi from a different file!");
+prompt("Hi! How are you?");
diff --git a/Chapter 01/Code Samples/ch1_popup1_hithere.html b/Chapter 01/Code Samples/ch1_popup1_hithere.html
@@ -0,0 +1,5 @@
+<html>
+  <script type="text/javascript">
+    alert("Hi there!");
+  </script>
+</html>
diff --git a/Chapter 01/Code Samples/ch1_popup2_prompt.html b/Chapter 01/Code Samples/ch1_popup2_prompt.html
@@ -0,0 +1,3 @@
+<html>
+  <script type="text/javascript" src="ch1_alert.js"></script>
+</html>
diff --git a/Chapter 01/Code Samples/ch1_welcome_new_scared.js b/Chapter 01/Code Samples/ch1_welcome_new_scared.js
@@ -0,0 +1,13 @@
+let status = "new";
+let scared = true;
+if (status === "new") {
+  console.log("Welcome to JavaScript!");
+  if (scared) {
+    console.log("Don't worry you will be fine!");
+  } else {
+    console.log("You're brave! You are going to do great!");
+  }
+} else {
+  console.log("Welcome back, I new you'd like it!");
+}
+
diff --git a/Chapter 02/Code Samples/ch2_boolean_and_comparison.js b/Chapter 02/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);
diff --git a/Chapter 02/Code Samples/ch2_calculations_conversions.js b/Chapter 02/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));
diff --git a/Chapter 02/Code Samples/ch2_strings_and_types.js b/Chapter 02/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);
diff --git a/Chapter 02/Code Samples/ch2_types_and_operations.js b/Chapter 02/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++);
diff --git a/Chapter 02/Code Samples/ch2_undefined_null.js b/Chapter 02/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;
diff --git a/Chapter 02/Code Samples/ch2_variables_basics.js b/Chapter 02/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;
diff --git a/Chapter 02/Code Samples/ch2_variables_number.js b/Chapter 02/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;
diff --git a/Chapter 02/Code Samples/ch2_variables_string.js b/Chapter 02/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);
diff --git a/Chapter 03/Code Samples/ch3_arrays.js b/Chapter 03/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);
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		//alert("Saying hi from a different file!");
		prompt("Hi! How are you?");