session 20: event exercices

Jeeppy · Apr 21, 2023 · 24f9291 · 24f9291
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diff --git a/session20/exercice1/index.html b/session20/exercice1/index.html
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+</head>
+<body>
+    <button>Lancer le décompte</button>
+    <script src="script.js"></script>
+</body>
+</html>
diff --git a/session20/exercice1/script.js b/session20/exercice1/script.js
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+let button = document.querySelector("button");
+let secondes = 10;
+let interval;
+
+button.addEventListener('click', start);
+
+function start() {
+    interval = setInterval(decompte, 1000);
+}
+
+function decompte() {
+    secondes--;
+    if (secondes > 0) {
+        document.querySelector('body').innerHTML += "<br/>" + secondes;
+    } else {
+        stop();
+    }
+}
+
+function stop() {
+    clearInterval(interval);
+}
diff --git a/session20/exercice2/index.html b/session20/exercice2/index.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+</head>
+<body>
+    <button>Afficher</button>
+    <p>Le texte caché.</p>
+    <script src="script.js"></script>
+</body>
+</html>
diff --git a/session20/exercice2/script.js b/session20/exercice2/script.js
@@ -0,0 +1,16 @@
+let button  = document.querySelector("button");
+let p       = document.querySelector("p");
+let hidden  = true;
+
+p.style.display = "none";
+
+button.addEventListener('click', () => {
+    if (hidden) {
+        button.textContent = "Cacher";
+        p.style.display = "";
+    } else {
+        button.textContent = "Afficher";
+        p.style.display = "none";
+    }
+    hidden = !hidden;
+});