devmentor-pl · AlexKry96 · Sep 10, 2025 · Sep 10, 2025 · Sep 11, 2025 · Sep 11, 2025
diff --git a/01/assets/js/app.js b/01/assets/js/app.js
@@ -1,4 +1,44 @@
 const a = '4.2';
 const b = 9;
 
-console.log(a, b);
+const y = parseFloat(a);
+
+console.log('a = ' + typeof(a));
+console.log('b = ' + typeof(b));
+console.log('y = ' + typeof(y));
+
+console.log(a, b);
+
+const res1 = b + y;
+const res2 = a - b;
+const res3 = a * b;
+const res4 = a / b;
+const res5 = b % y;
+let res6 = 1; res6++;
+let res7 = 2; res7--;
+const res8 = a + b;
+
+console.log('konkatenacja: ' + res8);
+console.log('Dodawanie: ' + res1);
+console.log('Odejmowanie: ' + res2);
+console.log('Mnożenie: ' + res3);
+console.log('Dzielenie: ' + res4);
+console.log('Reszta z dzielenia: ' + res5);
+console.log('Inkrementacja: ' + res6);
+console.log('Dekrementacja: ' + res7);
+
+
+function checkResult(name, value) {
+    if (value > 20) {
+        console.log(name + value + ' jest większy od 20');
+    } else {
+        console.log(name + value +  ' jest mniejszy od 20');
+    }
+
+}
+
+checkResult('Dodawanie', res1);
+checkResult('Odejmowanie', res2);
+checkResult('Mnożenie ', res3);
+checkResult('Dzielenie', res4);
+checkResult('Reszta z dzielenia', res5);
diff --git a/01/index.html b/01/index.html
@@ -7,6 +7,6 @@
     <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 +1,33 @@
 
 /* rozwiązanie z pętlą for */
-const x = 4;
+const x = prompt('Podaj numer');
 
 
+for(i=1; i<10; i++){
+    console.log(x + 'x' + i + '=' + i * x);
+}
+
+/* rozwiązanie z pętlą while  */
+
+const a = parseInt(prompt('Podaj podstawe'));
+const n = parseInt(prompt('Podaj wykładnik'));
+
+
+if(isNaN(a) || isNaN(n) || n < 0 ){
+    console.log('podaj poprawne liczby');
+}else {
+    let result = 1;
+    let expression = "";
+    let j = 0;
+
+    while (j < n) {
+        result *= a;
+        expression += a;
+        if (j < n - 1) {
+            expression += " * ";
+        }
+        j++;
+    }
+    console.log(expression + " = " + result);
+}
 
-/* rozwiązanie z pętlą while  */
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
@@ -5,10 +5,46 @@ const a = randomNumber(min, max);
 const b = randomNumber(min, max);
 const c = randomNumber(min, max);
 
-console.log(a, b, c);
-
-
-
+const result = getSum(a, b, c);
+const even = isEven(result);
+
+showInfo(result, even)
+
+
+
+function getSum(a, b, c){
+    a = parseInt(a);
+    b = parseInt(b);
+    c = parseInt(c);
+
+    const sorted = [a, b, c].sort((x, y) => y - x);
+
+    return sorted[0] + sorted[1];
+}
+
+function isEven(num) {
+    if (typeof num !== "number") {
+        return null;
+    }
+    return num % 2 === 0;
+}
+
+
+function showInfo(value, flag) {
+    switch (flag) {
+        case null:
+            console.log(`Podany argument ${value} nie jest liczbą`);
+            break;
+        case true:
+            console.log(`Podany argument ${value} jest parzysty`);
+            break;
+        case false:
+            console.log(`Podany argument ${value} jest nieparzysty`);
+            break;
+        default:
+            console.log("Nieprawidłowa wartość drugiego parametru");
+    }
+}
 
 
 

diff --git a/04/app.js b/04/app.js
@@ -0,0 +1,33 @@
+
+
+
+function createArray(min, max) {
+    const arr = [];
+    for (let i = 0; i < 20; i++) {
+        const random = Math.floor(Math.random() * (max - min + 1)) + min;
+        arr.push(random);
+    }
+    return arr;
+}
+
+
+function getLargest(arr) {
+    return arr
+        .sort((a, b) => b - a)
+        .slice(0, 10)        
+}
+
+function getAvg(arr) {
+    const sum = arr.reduce((acc, num) => acc + num, 0);
+    return sum / arr.length;
+}
+
+
+const arr = createArray(10, 200);
+console.log( 'Tabela ', arr);
+
+const largest = getLargest(arr);
+console.log(largest);
+
+const avg = getAvg(largest);
+console.log("Średnia arytmetyczna ", avg);
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 +1,51 @@
+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) {
+    if (typeof subject !== 'undefined') {
+
+        const grades = this.grades[subject];
+        if (!grades || grades.length === 0) return 0;
+
+        const sum = grades.reduce((acc, g) => acc + g, 0);
+        return (sum / grades.length).toFixed(2);
+    } else {
+
+        let allGrades = [];
+        for (const key in this.grades) {
+            allGrades = allGrades.concat(this.grades[key]);
+        }
+        if (allGrades.length === 0) return 0;
+
+        const sum = allGrades.reduce((acc, g) => acc + g, 0);
+        return (sum / allGrades.length).toFixed(2);
+    }
+};
+
+Student.prototype.getFullName = function() {
+    return `${this.firstName} ${this.lastName}`;
+};
+
+
+const student = new Student('Jan', 'Kowalski');
+
+student.addGrade('maths', 4);
+student.addGrade('maths', 6);
+student.addGrade('english', 3);
+
+
+console.log(student.getFullName());
+console.log(student.getAverageGrade('maths')); 
+console.log(student.getAverageGrade());        
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 - #01</title>
     </head>
     <body>
+        <script src="./assets/js/app.js"></script>
     </body>
     </html>