Attributo del nome HTML <meta>
Esempio
Utilizzare l'attributo name per definire una descrizione, parole chiave e l'autore di un documento HTML. Definisci anche il viewport per controllare le dimensioni e il ridimensionamento della pagina per diversi dispositivi:
<head>
<meta name="description" content="Free Web tutorials">
<meta name="keywords" content="HTML,CSS,JavaScript">
<meta name="author" content="John Doe">
<meta
name="viewport" content="width=device-width, initial-scale=1.0">
</head>
L' name
attributo specifica il nome dei metadati.
L' name
attributo specifica un nome per le informazioni/valore
content
dell'attributo.
Nota: se l' http-equiv
attributo è impostato, l'
name
attributo non deve essere impostato.
HTML5 ha introdotto un metodo per consentire ai web designer di assumere il controllo del viewport (l'area visibile dell'utente di una pagina Web), tramite il
<meta>
tag (vedere l'esempio "Impostazione del Viewport" di seguito).
Supporto del browser
Attribute | |||||
---|---|---|---|---|---|
name | Yes | Yes | Yes | Yes | Yes |
Sintassi
<meta name="value">
Valori di attributo
Value | Description |
---|---|
application-name | Specifies the name of the Web application that the page represents |
author | Specifies the name of the author of the document. Example:
<meta name="author" content="John Doe">
|
description | Specifies a description of the page. Search engines can pick up this description to show with the results of searches. Example:
<meta name="description" content="Free web tutorials">
|
generator | Specifies one of the software packages used to generate the document (not used on hand-authored pages). Example:
<meta name="generator" content="FrontPage 4.0">
|
keywords | Specifies a comma-separated list of keywords - relevant to the page (Informs search engines what the page is about). Tip: Always specify keywords (needed by search engines to catalogize the page). Example:
<meta name="keywords" content="HTML, meta tag, tag reference">
|
viewport | Controls the viewport (the user's visible area of a web page). The viewport varies with the device, and will be smaller on a mobile phone than on a computer screen. You should include the following <meta> viewport element in all your web pages:
<meta name="viewport" content="width=device-width, initial-scale=1.0">
A <meta> viewport element gives the browser instructions on how to control the page's dimensions and scaling. The width=device-width part sets the width of the page to follow the screen-width of the device (which will vary depending on the device). The initial-scale=1.0 part sets the initial zoom level when the page is first loaded by the browser. Here is an example of a web page without the viewport meta tag, and the same web page with the viewport meta tag: Tip: If you are browsing this page with a phone or a tablet, you can click on the two links below to see the difference. You can read more about the viewport in our Responsive Web Design - The Viewport Tutorial. |
❮ Tag HTML <meta>