devmentor-pl · MstowskaSandra · Aug 18, 2025 · Aug 18, 2025 · Aug 18, 2025 · Aug 18, 2025
diff --git a/01/assets/js/app.js b/01/assets/js/app.js
@@ -1,4 +1,75 @@
 const a = '4.2';
 const b = 9;
 
-console.log(a, b);
+console.log(a, b);
+console.log("Constant a is of type:", typeof(a), ". Constant b is of type:", typeof(b));
+
+function sum(a, b) {
+    return Number(a) + b;
+}
+
+function difference(a, b) {
+    return Number(a) - b;
+}
+
+function product(a, b) {
+    return Number(a) * b;
+}
+
+function quotient(a, b) {
+    return Number(a) / b;
+}
+
+function remainder(a, b) {
+    return Number(a) % b;
+}
+
+function increment(a, b) {
+    let numA = Number(a);
+    numA++;
+    let numB = b;
+    numB++;
+    return [numA, numB];
+}
+
+function decrement(a, b) {
+    let numA = Number(a);
+    numA--;
+    let numB = b;
+    numB--;
+    return [numA, numB];
+}
+
+const addition = sum(a, b);
+const subtraction = difference(a, b);
+const multipliplication = product(a, b);
+const division = quotient(a, b);
+const modulo = remainder(a, b);
+const postIncrement = increment(a, b);
+const postDecrement = decrement(a, b);
+
+console.log("Score of addition:", addition);
+console.log("Score of subtraction:", subtraction);
+console.log("Score of multipliplication:", multipliplication.toFixed(2));
+console.log("Score of division:", division.toFixed(2));
+console.log("Score of modulo:", modulo);
+console.log("Scores od increment:", postIncrement);
+console.log("Scores of decrement:", postDecrement);
+
+const results = [
+    { name: "Addition", value: addition},
+    { name: "Substraction", value: subtraction},
+    { name: "Multipliplication", value: multipliplication},
+    { name: "Division", value: division},
+    { name: "Modulo", value: modulo},
+    { name: "postIncrement", value: postIncrement},
+    { name: "postDecrement", value: postDecrement},
+];
+
+for (const result of results) {
+    if (result.value > 20) {
+        console.log(`${result.name} is greater than 20`);
+    } else {
+        console.log(`${result.name} is less than or equal to 20`)
+    }
+}
diff --git a/01/index.html b/01/index.html
@@ -4,9 +4,10 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <meta http-equiv="X-UA-Compatible" content="ie=edge">
+    <link rel="stylesheet" href="./assets/css/style.css">
     <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 +1,37 @@
 
 /* rozwiązanie z pętlą for */
-const x = 4;
+const x = Number(prompt('Podaj liczbę od 1 do 9!'));
 
+if(x > 9) {
+   alert("Za duża liczba, uczymy się do 9!");
+} else {
+    for(let i =  1; i <= 9; i++) {
+        const results = x * i;
+        console.log(`${x} x ${i} = ${results}`);
+    }
+}
 
 
-/* rozwiązanie z pętlą while  */
+
+/* rozwiązanie z pętlą while  */
+
+const a = Number(prompt('Podaj podstawę potęgowania! (max liczba 10)'));
+const n = Number(prompt('Podaj wykładnij potęgowania! (max liczba 5)'));
+
+let result = 1;
+let sequence = '';
+
+
+if(a < 1 || a > 10 && n < 1 || n > 5) {
+    alert('Prosze podac prawidłowe liczby!');
+} else {
+    let i = 1;
+    while(i <= n) {
+        result *= a;
+        sequence += a;
+        if( i < n) sequence += ' * ';
+        i++;
+    }
+    console.log(`${sequence} = ${result}`);
+}
+
diff --git a/02/index.html b/02/index.html
@@ -7,6 +7,6 @@
     <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
@@ -7,10 +7,44 @@ const c = randomNumber(min, max);
 
 console.log(a, b, c);
 
-
-
-
-
+function getSum(a, b, c) {
+    const numbers = [a, b, c];
+    numbers.sort(function(a, b){ return b-a;});
+    console.log("Sort numbers:", numbers);
+    const sum = numbers[0] + numbers[1];
+    return sum;
+}
+const sum = getSum(a, b, c);
+console.log("Sum of two greater numbers:", sum);
+
+function isEven(num) {
+    if(typeof(num) === Number) {
+        return null;
+    } else {
+        if (num % 2 === 0 ) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+}
+const isSumEven = isEven(sum);
+console.log("Sum is even?", isSumEven);
+
+
+function showInfo(sum, isSumEven) {
+    switch(isSumEven) {
+        case null:
+            console.log(`Podany argument ${sum} nie jest liczbą`);
+            break;
+        case true:
+            console.log(`Podany argument ${sum} jest parzysty`);
+            break;
+        case false:
+            console.log(`Podany argument ${sum} jest nieparzysty`);   
+    }
+}
+const completeInfo = showInfo(sum, isSumEven);
 
 
 function randomNumber(min, max) {

diff --git a/04/app.js b/04/app.js
@@ -0,0 +1,28 @@
+
+function randomNumber(min, max) {
+    return Math.round((Math.random() * (max - min)) + min);
+}
+
+const arr = [];
+
+for(let i = 0; i < 20; i++) {
+   arr.push(randomNumber(1, 200));
+}
+console.log("Full array random 20 numbers:", arr);
+
+
+function sortNumbers(arr) {
+    return arr.sort(function(a, b){return b-a}).slice(0, 9);
+}
+const largestNumbers = sortNumbers(arr);
+console.log("Largest numbers:", largestNumbers);
+
+
+
+function arithmeticMean(arr) {
+    if( arr.length === 0) {
+        return 0;
+    }
+    return arr.reduce((acc, curr) => acc + curr, 0) / arr.length;
+}
+console.log(`Arithmetic mean of ${arr} is ${arithmeticMean(arr)}`);
diff --git a/04/index.html b/04/index.html
@@ -7,6 +7,6 @@
     <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 +1,41 @@
+function Student(initFirstName, initLastName, initGrades) {
+    this.firstName = initFirstName;
+    this.lastName = initLastName;
+    this.grades = {};
+}
+
+Student.prototype.addGrade = function(subject, grade) {
+    if (typeof this.grades[subject] === 'undefined') {
+        this.grades[subject] = [];
+    }
+    this.grades[subject].push(grade);
+};
+
+const student = new Student('Sandra', 'Mstowska');
+student.addGrade('maths', 4);
+student.addGrade('maths', 5);
+student.addGrade('english', 3);
+student.addGrade('english', 5);
+
+Student.prototype.calculateAverage = function(grades) {
+    if (!grades || grades.length === 0) return 0;
+        const sum = grades.reduce((acc, val) => acc + val, 0);
+        return sum /grades.length;
+};
+
+
+Student.prototype.getAverageGrade = function(subject) {
+    if (subject) {
+        return this.calculateAverage(this.grades[subject]);      
+    } else {
+        const allGrades = Object.values(this.grades).flat();
+        return this.calculateAverage(allGrades);
+    }
+};
+
+student.addGrade('polish', 1);
+
+console.log(student);
+console.log("Średnia wszytskich ocen:", student.getAverageGrade());
+console.log("Średnia ocen z matmy:", student.getAverageGrade('maths'));
+console.log("Średnia ocen z polski język:", student.getAverageGrade('polish'));
diff --git a/05/index.html b/05/index.html
@@ -7,6 +7,6 @@
     <title>devmentor.pl - JS BASICS - #05</title>
 </head>
 <body>
-
+    <script src="./app.js"></script>
 </body>
 </html>
-Original file line number
+Diff line change
@@ Expand Up / @@ -7,6 +7,6 @@ @@
         <title>devmentor.pl - JS BASICS - #02</title>
     </head>
     <body>
+        <script src="./app.js"></script>
     </body>
     </html>