September 2024
Intermediate to advanced
320 pages
6h 11m
German
Content preview from JavaScript Schnelleinstieg - Dynamische Webseiten programmieren in 14 Tagen
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Vorwort
Sofort ins kalte Wasser – ein fremdes Skript lesen und verstehen
Die ersten Gehversuche mit JavaScript starten die meisten Webdesigner mit einem fertigen Skript, das sie z.B. auf GitHub finden und vielleicht in einzelnen Anweisungen nach ihrer Vorstellung ändern.
Für den ersten Schritt in die Programmierung mit JavaScript reicht eine normale Webseite. Das script-Element am Ende des Dokuments (vor dem schließenden body-Tag) braucht keinerlei Attribute. Innerhalb der öffnenden und schließenden script-Tags wirken JavaScript-Anweisungen nur auf dieser Seite.
HTML:
Der Aufruf document.querySelector ist das JavaScript-Äquivalent zum CSS-Selektor. ...
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