This commit is contained in:
Philippe Torrel
@@ -1,5 +1,6 @@
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# Tastenkürzel in VSCode
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- `STRG + #` Ein- und Auskommentieren.
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- `ALT + W` - Markierung in HTML mit einem Element ummanteln
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- `ALT + SHIFT + ↑` Kopie von Zeile über aktuelle Markierung
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- `ALT + SHIFT + ↓` Kopie von Zeile unter aktuelle Markierung
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@@ -27,17 +27,55 @@
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Dialogfenster mit einem Text-Eingabefeld an, mit einer optionalen Nachricht an den Benutzer.
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</p>
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</div>
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<div class="alert alert-primary my-3">
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<h2>confirm()</h2>
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<p>
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Die <a href="https://developer.mozilla.org/de/docs/Web/API/Window/confirm">window.confirm()</a> Methode
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zeigt ein modales Dialogfenster mit einem optionalen Text und zwei Buttons an, OK und Abbrechen.
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Rückgabewert ist ein Boolean (true, false)
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</p>
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</div>
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<hr />
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<button type="button" class="its-btn btn-primary" command="show-modal" commandfor="m-native">Open modal</button>
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<dialog class="its-modal" id="m-native" aria-labelledby="m-native-title">
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<div class="modal-dialog">
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<div class="modal-content">
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<div class="modal-header">
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<h2 class="modal-title" id="m-native-title">Native dialog</h2>
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<button
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type="button"
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class="its-btn btn-close"
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command="close"
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commandfor="m-native"
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aria-label="Close"></button>
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</div>
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<div class="modal-body">
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<p>
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Opened by an invoker command, closed by another one. No
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<code>data-its-*</code> attribute anywhere in this markup.
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</p>
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</div>
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<div class="modal-footer">
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<button type="button" class="its-btn btn-secondary" command="close" commandfor="m-native">Close</button>
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</div>
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</div>
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</div>
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</dialog>
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</div>
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</main>
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<script>
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'use strict';
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// window.alert('Hello World'); // window muss als äußerstes Objekt nicht explizit angegeben werden. (Angabe ist optional)
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// alert('Hello World');
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alert('Hello World');
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// let result = window.prompt('Die Anwort auf alles?');
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let result = prompt('Die Anwort auf alles?');
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console.log(result); // => string | null
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// let result = prompt('Die Anwort auf alles?');
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// console.log(result); // => string | null
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let answer = confirm('Lust auf eine Pause?');
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console.log(answer); // => boolean (true | false)
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</script>
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</body>
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</html>
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40
01_grundlagen/unterricht/tag02/02_use-strict.html
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40
01_grundlagen/unterricht/tag02/02_use-strict.html
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@@ -0,0 +1,40 @@
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<!doctype html>
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<html lang="de">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>use strict - JS in strikten Modus setzen</title>
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<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/css/bootstrap.min.css" rel="stylesheet" />
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</head>
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<body>
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<main>
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<div class="container py-5">
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<h1>use strict - JS in strikten Modus setzen</h1>
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<p>Viele veraltete Sprachkonstrukte werden nicht mehr akzeptiert</p>
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</div>
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</main>
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<script>
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text = 'Ich bin ein Text';
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console.log(text, window.text); // OHNE 'use strict' -> Variable wird global (aus window) angelegt
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</script>
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<script>
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'use strict'; // JS in strikten Modus setzen
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text2 = 'Ich bin ein Text';
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// vor ES6 (ECMAScript 2015)
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var message = 'Hello World';
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// seit ES6
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let message2 = 'Hello World';
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const language = 'de-DE';
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console.log(text2); // ReferenceError: text2 is not defined
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// OHNE 'use strict' -> Variable wird global (auf window) angelegt.
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// MIT 'use strict' -> Uncaught ReferenceError: text2 is not defined
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</script>
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</body>
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</html>
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32
01_grundlagen/unterricht/tag02/03_kommentare.html
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32
01_grundlagen/unterricht/tag02/03_kommentare.html
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@@ -0,0 +1,32 @@
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<!doctype html>
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<html lang="de">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>Kommentare</title>
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<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/css/bootstrap.min.css" rel="stylesheet" />
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<style>
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/* Kommentar in CSS */
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body {
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background-color: #efefef;
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}
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</style>
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</head>
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<body>
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<main>
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<div class="container py-5">
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<h1>Kommentare</h1>
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<!-- Kommentar in HTML -->
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</div>
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</main>
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<script>
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'use strict';
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// einzeiliger Kommentar (Tastenkürzel: STRG + # | CMD + SHIFT + 7)
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/*
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Mehrzeiliger Kommentar (SHIFT + ALT + a | OPTION + SHIFT + a)
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*/
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</script>
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</body>
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</html>
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