{"id":4254,"date":"2020-10-30T22:16:33","date_gmt":"2020-10-30T21:16:33","guid":{"rendered":"https:\/\/webhosting.de\/?p=4254"},"modified":"2020-10-30T22:16:33","modified_gmt":"2020-10-30T21:16:33","slug":"html-hypertext-markup-language","status":"publish","type":"post","link":"https:\/\/webhosting.de\/da\/html-hypertext-markup-language\/","title":{"rendered":"HTML (Hypertext Markup Language)"},"content":{"rendered":"<p>HTML er det mest udbredte markup-sprog p\u00e5 internettet. Internetsider overf\u00f8rer deres indhold i form af HTML til din browser, som l\u00e6ser og implementerer syntaksen. Desuden indeholder HTML oplysninger om stil, formatering eller den <a href=\"https:\/\/webhosting.de\/da\/suchmaschinenoptimierung\/\">S\u00f8gemaskineoptimering<\/a> (SEO).<\/p>\n<h2>Hvorfor HTML?<\/h2>\n<p>HTML (Hypertext Markup Language) er et s\u00e5kaldt markup-sprog, som bestemmer indholdet og formen af digitale dokumenter. Ud over HTML findes der andre markup-sprog som XML og Ajax. Udm\u00e6rkningssprogene udvikles og opdateres konstant til nyere versioner. I 1992 udkom den f\u00f8rste HTML-version, efter at markup-sproget allerede var blevet foresl\u00e5et tre \u00e5r tidligere.<\/p>\n<p>N\u00e5r du bruger internettet, anvendes en r\u00e6kke forskellige output-enheder: Sk\u00e6rme har ikke ensartede dimensioner, og du kan forst\u00f8rre eller formindske browservinduet. En internetside b\u00f8r dog altid vise indholdet p\u00e5 en s\u00e5dan m\u00e5de, at det er let genkendeligt. Derfor giver det ikke mening at rette enkelte sideelementer helt og holdent. I denne forbindelse spiller HTML en vigtig rolle i formateringen af tekster eller i placeringen af billed- og videofiler p\u00e5 en internetside.<\/p>\n<p>Mere generelt set er HTML en formidler mellem den p\u00e5g\u00e6ldende internetside og din webbrowser. Sproget indeholder tegn, specialtegn, formatering, links, metadata og meget mere information. Metadata er HTML-komponenter, som du ikke kan se i den normale visning af din browser. Ikke desto mindre er de afg\u00f8rende for, at en <a href=\"https:\/\/webhosting.de\/da\/eine-eigene-webseite-fuer-ihr-unternehmen-ja-oder-nein\/\">Websted<\/a> nyttige og bidrager f.eks. til s\u00f8gemaskineoptimering.<\/p>\n<h3>Den grundl\u00e6ggende struktur: HTML-b\u00f8jler<\/h3>\n<p>HTML (ligesom mange andre programmerings- og programmeringssprog) bruger parenteser til at strukturere syntaksen. HTML-parenteser f\u00f8lger samme princip som parenteserne i den foreg\u00e5ende s\u00e6tning: en \u00e5bnende parentes markerer begyndelsen af en enhed, mens en lukkende parentes markerer slutningen. I mods\u00e6tning til normale tegns\u00e6tningstegn definerer HTML-parenteser, hvad der pr\u00e6cist sker med teksten mellem dem.<\/p>\n<p>Hvis du f.eks. \u00f8nsker at understrege et stykke tekst, skal du bruge syntaksen \"<u>Text<\/u>\" (uden mellemrum i de firkantede parenteser). Hvis denne syntaks findes p\u00e5 en webside, kan din browser l\u00e6se den og konverterer den automatisk til et understreget ord.<\/p>\n<p>HTML bruges dog ikke kun til at formatere tekst p\u00e5 en webside. I stedet organiserer HTML hele dokumentet.<\/p>\n<h3>Hoved og krop i HTML-dokumenter<\/h3>\n<p>I begyndelsen definerer et virtuelt dokument over for browseren, hvilket markup-sprog det anvender. I HTML5 g\u00f8res dette f\u00f8rst med specifikationen \"\" og derefter med parentesen \"\" (ogs\u00e5 her og for alle efterf\u00f8lgende HTML-specifikationer: uden mellemrum mellem de firkantede parenteser). \"\" er en parentes, der kun \u00e5bnes og lukkes helt til sidst i dokumentet. Det er vigtigt at angive den korrekte dokumenttypedefinition. Versioner f\u00f8r HTML5 bruger en mere udf\u00f8rlig definition i stedet for \"\".<\/p>\n<p>Dette efterf\u00f8lges af dokumentets overskrift med syntaksen \"\". I HTML-hovedet h\u00f8rer metadata, sidens titel, scripts og andre byggeklodser til. F\u00f8rst efter alle angivelser af titlen lukker parentesen i HTML-hovedet med \"\".<\/p>\n<p>F\u00f8rst derefter skrives HTML-teksten, som er markeret med \"\". Dokumentets br\u00f8dtekst udg\u00f8r hovedparten af en internetside. Den giver plads til tekster, <a href=\"https:\/\/webhosting.de\/da\/bilder-fuer-blogs-verwenden-ist-zu-beachten\/\">Billeder<\/a>, videofiler og andre elementer. N\u00e5r alt det \u00f8nskede indhold er indsat i syntaksen, lukker du HTML-teksten med parentesen \"\".<\/p>\n<p>Slutningen af det digitale dokument er dannet af syntaksen \"\", som angiver slutningen af HTML-teksten.<\/p>\n<h3>Almindelige HTML-elementer<\/h3>\n<p>(Syntaks i hvert tilf\u00e6lde uden mellemrum mellem de firkantede parenteser ELLER uden mellemrum efter \"&amp;\"!)<\/p>\n<p>- Titel: <title>webstedets titel<\/title>.<br \/>\n- fed tekst: <b>tekst<\/b> eller <strong>tekst<\/strong><br \/>\n- Kursiv tekst: <em>tekst<\/em> eller <i>tekst<\/i><br \/>\n- understregede tekst: <u> tekst<\/u><br \/>\n- Link: Beskrivelse af link<\/a><br \/>\n- Overskrift 1. r\u00e6kkef\u00f8lge: <h1>overskrift<\/h1><br \/>\n- Overskrift af 2. orden: underordnet overskrift<\/h2><br \/>\n- Afsnit: <p>Denne tekst fylder hele afsnittet.<\/p><p>Dette er det andet afsnit.<\/p><br \/>\n- At-tegn (@): &amp; #64; eller &amp; commat;<br \/>\n- H\u00f8jre pil: &amp; #8594; eller &amp; rarr;<br \/>\n- Venstre pil: &amp; #8592; eller &amp; larr;<br \/>\n- Pil op: &amp; #8593; eller &amp; uarr;<br \/>\n- Pil ned: &amp; #8595; eller &amp; darr<br \/>\n- Hjerte-symbol: &amp; #9829; eller &amp; hjerter;<\/p>","protected":false},"excerpt":{"rendered":"<p>HTML verk\u00f6rpert die Auszeichnungssprache, die im Internet am weitesten verbreitet ist. Internetseiten \u00fcbermitteln ihren Inhalt in Form von HTML an Ihren Browser, der die Syntax ausliest und umsetzt. Dar\u00fcber hinaus enth\u00e4lt HTML Informationen f\u00fcr den Stil, die Formatierung oder die Suchmaschinenoptimierung (SEO). Warum HTML? HTML (Hypertext Markup Language) ist eine sogenannte Auszeichnungssprache, die Inhalt und 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