Lekcja 1 - ćwiczenia i zadanie

Lekcja_01/cwA.html

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+<!DOCTYPE html>
+<html lang="pl">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>jQuery Lekcja 1</title>
+    <script src="lib/jquery.js"></script>
+    <script>
+        $(document).ready(function () {
+            let size = 100;
+
+            $("#b1").on("click", function() {
+                let enlarge = confirm("Shall I enlarge, sir?")
+                size = enlarge ? size*2 : size/3
+                $("#d1").css("width", `${size}px`)
+                $("#d1").css("height", `${size}px`)
+            })
+        })
+    </script>
+    <style>
+        #d1 {
+            background-color: green;
+            width: 100px;
+            height: 100px;
+        }
+    </style>
+</head>
+<body>
+    <button id="b1">Zmiana rozmiaru</button><br>
+    <div id="d1"></div>
+</body>
+</html>