devmentor-pl · ArturDevCraft · Sep 30, 2025 · Sep 30, 2025 · Sep 30, 2025 · Sep 30, 2025
diff --git a/01/assets/js/app.js b/01/assets/js/app.js
@@ -1,4 +1,54 @@
 const a = '4.2';
 const b = 9;
 
-console.log(a, b);
+console.log(a, b);
+
+console.log(typeof a, typeof b);
+
+let addition = parseFloat(a) + b;
+let substraction = a - b;
+let multiplication = a * b;
+let division = a / b;
+let modulo = a % b;
+let increment = a;
+increment++;
+let decrement = a;
+decrement--;
+
+console.log(
+	addition,
+	substraction,
+	multiplication,
+	division,
+	modulo,
+	increment,
+	decrement
+);
+
+if (addition > 20) {
+	console.log('Addition result is grtater than 20');
+}
+
+if (substraction > 20) {
+	console.log('Substraction result is grtater than 20');
+}
+
+if (multiplication > 20) {
+	console.log('Multiplication result is grtater than 20');
+}
+
+if (division > 20) {
+	console.log('Division result is grtater than 20');
+}
+
+if (modulo > 20) {
+	console.log('Modulo result is grtater than 20');
+}
+
+if (increment > 20) {
+	console.log('Incrementation result is grtater than 20');
+}
+
+if (decrement > 20) {
+	console.log('Decrementation result is grtater than 20');
+}
diff --git a/01/index.html b/01/index.html
@@ -1,12 +1,15 @@
 <!DOCTYPE html>
 <html lang="pl">
+
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <meta http-equiv="X-UA-Compatible" content="ie=edge">
     <title>devmentor.pl - JS BASICS - #01</title>
 </head>
+
 <body>
-
+    <script src="assets/js/app.js"></script>
 </body>
+
 </html>
diff --git a/02/app.js b/02/app.js
@@ -1,7 +1,40 @@
-
 /* rozwiązanie z pętlą for */
-const x = 4;
+const x = parseInt(prompt('Podaj liczbę do mnożenia (od 1 do 9)'));
+
+if (x > 0 && x <= 9) {
+	for (let i = 1; i <= 9; i++) {
+		console.log(`${x} x ${i} = ${x * i}`);
+	}
+} else {
+	alert('Podana liczba nie jest z zakresu od 1 do 9');
+}
+
+/* rozwiązanie z pętlą while  */
+
+const a = parseInt(prompt('Podaj podstawę potęgi'));
+const n = parseInt(prompt('Podaj wykładnik potęgi'));
 
+let i = 1;
+let result = a;
+let resultMethod = a;
 
+if (n === 0) {
+	result = 1;
+} else if (n < 0) {
+	i = -1;
+	while (i > n) {
+		result *= a;
+		resultMethod = resultMethod + ' x ' + a;
+		i--;
+	}
+	resultMethod = '1 / (' + resultMethod + ')';
+	result = 1 / result;
+} else {
+	while (i < n) {
+		result *= a;
+		resultMethod = resultMethod + ' x ' + a;
+		i++;
+	}
+}
 
-/* rozwiązanie z pętlą while  */
+console.log(resultMethod + ' = ' + result);
diff --git a/02/index.html b/02/index.html
@@ -1,12 +1,16 @@
 <!DOCTYPE html>
 <html lang="pl">
+
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <meta http-equiv="X-UA-Compatible" content="ie=edge">
     <title>devmentor.pl - JS BASICS - #02</title>
 </head>
+
 <body>
-
+
+    <script src="app.js"></script>
 </body>
+
 </html>
diff --git a/03/app.js b/03/app.js
@@ -7,12 +7,47 @@ const c = randomNumber(min, max);
 
 console.log(a, b, c);
 
-
-
-
-
-
+const isEven = function (num) {
+	if (typeof num !== 'number') {
+		return null;
+	} else {
+		return num % 2 === 0;
+	}
+};
+
+const sum = getSum(a, b, c);
+const even = isEven(sum);
+
+showInfo(sum, even);
+
+function getSum(a, b, c) {
+	a = parseInt(a);
+	b = parseInt(b);
+	c = parseInt(c);
+
+	if (a <= b && a <= c) {
+		return b + c;
+	} else if (b < a && b <= c) {
+		return a + c;
+	} else {
+		return a + b;
+	}
+}
+
+function showInfo(x, bool) {
+	switch (bool) {
+		case null:
+			console.log(`Podany argument ${x} nie jest liczbą`);
+			break;
+		case true:
+			console.log(`Podany argument ${x} jest parzysty`);
+			break;
+		case false:
+			console.log(`Podany argument ${x} jest nieparzysty`);
+			break;
+	}
+}
 
 function randomNumber(min, max) {
-    return Math.round((Math.random() * (max - min)) + min);
-}
+	return Math.round(Math.random() * (max - min) + min);
+}
diff --git a/04/app.js b/04/app.js
@@ -0,0 +1,28 @@
+const min = 10;
+const max = 200;
+
+const arr = createArray(min, max);
+const largest = getLargest(arr);
+const avg = getAvg(largest);
+
+console.log('Array: ' + arr);
+console.log('10 Largest numbers: ' + largest);
+console.log('Average value: ' + avg);
+
+function getAvg(arr) {
+	return arr.reduce((a, b) => a + b) / arr.length;
+}
+
+function getLargest(arr) {
+	return arr.sort((a, b) => b - a).slice(0, 10);
+}
+
+function createArray(min, max) {
+	const arr = [];
+	let number;
+	for (let i = 0; i < 20; i++) {
+		number = Math.round(Math.random() * (max - min)) + min;
+		arr.push(number);
+	}
+	return arr;
+}
diff --git a/04/index.html b/04/index.html
@@ -1,12 +1,15 @@
 <!DOCTYPE html>
 <html lang="pl">
+
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <meta http-equiv="X-UA-Compatible" content="ie=edge">
     <title>devmentor.pl - JS BASICS - #04</title>
 </head>
+
 <body>
-
+    <script src="app.js"></script>
 </body>
+
 </html>
diff --git a/05/app.js b/05/app.js
@@ -0,0 +1,38 @@
+function Student(firstName, lastName) {
+	this.firstName = firstName;
+	this.lastName = lastName;
+	this.grades = {};
+}
+
+Student.prototype.addGrade = function (subject, grade) {
+	if (typeof this.grades[subject] === 'undefined') {
+		this.grades[subject] = [];
+	}
+	this.grades[subject].push(grade);
+};
+
+Student.prototype.getAverageGrade = function (subject = null) {
+	let gradesArr;
+	if (subject !== null) {
+		gradesArr = this.grades[subject];
+	} else {
+		gradesArr = Object.values(this.grades).flat();
+	}
+
+	return (
+		gradesArr.reduce((acc, curr) => acc + curr, 0) / gradesArr.length
+	).toFixed(2);
+};
+
+const artur = new Student('Artur', 'Testowy');
+
+artur.addGrade('maths', 5);
+artur.addGrade('maths', 5);
+artur.addGrade('maths', 4);
+artur.addGrade('maths', 4);
+artur.addGrade('physics', 4);
+artur.addGrade('physics', 3);
+artur.addGrade('physics', 5);
+
+console.log(artur.getAverageGrade('maths'));
+console.log(artur.getAverageGrade());
diff --git a/05/index.html b/05/index.html
@@ -1,12 +1,15 @@
 <!DOCTYPE html>
 <html lang="pl">
+
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <meta http-equiv="X-UA-Compatible" content="ie=edge">
     <title>devmentor.pl - JS BASICS - #05</title>
 </head>
+
 <body>
-
+    <script src="app.js"></script>
 </body>
+
 </html>