HTML <link> media atribut
Příklad
Dvě různé šablony stylů pro dva různé typy médií (obrazovka a tisk):
<head>
<link rel="stylesheet" type="text/css" href="theme.css">
<link rel="stylesheet" type="text/css" href="print.css" media="print">
</head>
Definice a použití
Atribut mediaurčuje, pro jaké médium/zařízení je cílový prostředek optimalizován.
Tento atribut se většinou používá u šablon stylů CSS k určení různých stylů pro různé typy médií.
Atribut mediamůže přijímat několik hodnot.
Podpora prohlížeče
| Attribute | |||||
|---|---|---|---|---|---|
| media | Yes | Yes | Yes | Yes | Yes |
Syntax
<link media="value">
Možní operátoři
| Value | Description |
|---|---|
| and | Specifies an AND operator |
| not | Specifies a NOT operator |
| , | Specifies an OR operator |
Zařízení
| Value | Description |
|---|---|
| all | Default. Used for all media type devices |
| Used for Print preview mode/printed pages | |
| screen | Used for computer screens, tablets, smart-phones etc. |
| speech | Used for screenreaders that "reads" the page out loud |
| aural | Deprecated. Speech synthesizers |
| braille | Deprecated. Braille feedback devices |
| handheld | Deprecated. Handheld devices (small screen, limited bandwidth) |
| projection | Deprecated. Projectors |
| tty | Deprecated. Teletypes and similar media using a fixed-pitch character grid |
| tv | Deprecated. Television type devices (low resolution, limited scroll ability) |
Hodnoty
| Value | Description |
|---|---|
| aspect-ratio | Specifies the width/height ratio of the targeted display area. "min-" and "max-" prefixes can be used. Example: media="screen and (max-aspect-ratio:16/9)" |
| color | Specifies the bits per color of target display. "min-" and "max-" prefixes can be used. Example: media="screen and (min-color:3)" |
| color-index | Specifies the number of colors the target display can handle. "min-" and "max-" prefixes can be used. Example: media="screen and (min-color-index:256)" |
| device-aspect-ratio | Deprecated. Specifies the device-width/device-height ratio of the target display/paper. |
| device-width | Deprecated. Specifies the width of the target display/paper. |
| device-height | Deprecated. Specifies the height of the target display/paper. |
| grid | Specifies if the output device is grid or bitmap. Possible values are "1" for grid, and "0" otherwise. Example: media="handheld and (grid:1)" |
| height | Specifies the height of the targeted display area. "min-" and "max-" prefixes can be used. Example: media="screen and (max-height:700px)" |
| monochrome | Specifies the bits per pixel in a monochrome frame buffer. "min-" and "max-" prefixes can be used. Example: media="screen and (min-monochrome:2)" |
| orientation | Specifies the orientation of the target display/paper. Possible values: "portrait" or "landscape" Example: media="all and (orientation: landscape)" |
| resolution | Specifies the pixel density (dpi or dpcm) of the target display/paper. "min-" and "max-" prefixes can be used. Example: media="print and (min-resolution:300dpi)" |
| scan | Specifies scanning method of a tv display. Possible values are "progressive" and "interlace". Example: media="tv and (scan:interlace)" |
| width | Specifies the width of the targeted display area. "min-" and "max-" prefixes can be used. Example: media="screen and (min-width:500px)" |
❮ HTML tag <link>