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Philippe Torrel
2026-09-08 17:13:21 +02:00
parent e3321adea5
commit 627096ba41
4 changed files with 82 additions and 2 deletions
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58
01_grundlagen/unterricht/tag02/08_typeof.html
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<!doctype html>
<html lang="de">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Datentypen und der Befehl "typeof" in JS</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/css/bootstrap.min.css" rel="stylesheet" />
</head>
<body>
<main>
<div class="container py-5">
<h1>Datentypen und der Befehl "typeof" in JS</h1>
<div class="output alert alert-secondary my-3"></div>
</div>
</main>
<script>
'use strict';
let outputEl = document.querySelector('.output');
console.log(typeof 3764); // => 'number';
console.log(typeof 'beautiful JS'); // => 'string';
console.log(typeof 27.31); // => 'number';
console.log(typeof -3.14); // => 'number';
console.log(typeof '-3.14'); // => 'string';
console.log(typeof '3.14'); // => 'string';
// prettier-ignore
console.log(typeof "123"); // => 'string'
console.log(typeof `123 + 1`); // => 'string'
console.log(typeof `${123 + 1}`); // => 'string'
console.log(typeof true); // => 'boolean'
console.log(typeof false); // => 'boolean'
console.log(typeof function () {}); // => 'function'
console.log(typeof 0b1001); //=> 'number'
console.log(typeof 123n); // => 'bigint' (2020)
// =======================
console.log(typeof 4 + 4); // => 'number4'
console.log(typeof (4 + 4)); // => 'number'
console.log(typeof undefined); // => 'undefined'
console.log(typeof var2); // => 'undefined'
console.log(typeof [1, 2, 3]); //=> 'object' vom Typ Array
console.log(typeof { firstName: 'John', age: 30 }); //=> 'object' vom Typ Object
console.log(typeof null); //=> 'object' vom Typ Null
console.log(typeof outputEl); //=> 'object' vom Typ HTMLDivElement (Node)
console.log(typeof outputEl.classList); //=> 'object' vom Typ DOMTokenList
console.log('b' + 'a' + +'a' + 'a'); //=> 'baNaNa'
</script>
</body>
</html>

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01_grundlagen/unterricht/tag02/09_prioritaetsreihenfolge.html Normal file
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<!doctype html>
<html lang="de">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Prioritäten-Tabelle</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/css/bootstrap.min.css" rel="stylesheet" />
</head>
<body>
<main>
<div class="container py-5">
<h1>Prioritäten-Tabelle</h1>
<!-- TODO: Tabelle in HTML aus Lektion (3.7.2) erstellen -->
</div>
</main>
<script>
'use strict';
</script>
</body>
</html>