CSS-свойство font
является сокращением для font-style
, font-variant
(en-US) , font-weight
, font-stretch
(en-US) , font-size
, line-height
, и font-family
. Кроме того, он позволяет установить системный шрифт для элементов интерфейса.
Как и с любым сокращённым свойством, любое значение, которое не указано, устанавливается в начальное значение (возможно, переопределяя значения, ранее установленные с использованием не сокращённых свойств). Свойства font-size-Adjust
(en-US) и font-kerning
(en-US) хоть и не могут быть напрямую установлены с помощью font
, но они также сбрасываются к своим начальным значениям.
The font
property may be specified as either a single keyword, which will select a system font, or as a shorthand for various font-related properties.
If font
is specified as a system keyword, it must be one of: caption
, icon
, menu
, message-box
, small-caption
, status-bar
.
If font
is specified as a shorthand for several font-related properties, then:
it must include values for:
it may optionally include values for:
font-style
, font-variant
and font-weight
must precede font-size
font-variant
may only specify the values defined in CSS 2.1, that is normal
and small-caps
font-stretch
may only be a single keyword value.
line-height
must immediately follow font-size
, preceded by "/", like this: "16px/3
"
font-family
must be the last value specified.
<'font-style'>
See the font-style
CSS property.
<'font-variant'>
See the font-variant
(en-US) CSS property.
<'font-weight'>
See the font-weight
CSS property.
<'font-stretch'>
See the font-stretch
(en-US) CSS property.
<'font-size'>
See the font-size
CSS property.
<'line-height'>
See the line-height
CSS property.
<'font-family'>
See the font-family
CSS property.
System font values
caption
The system font used for captioned controls (e.g., buttons, drop-downs, etc.).
icon
The system font used to label icons.
The system font used in menus (e.g., dropdown menus and menu lists).
message-box
The system font used in dialog boxes.
small-caption
The system font used for labeling small controls.
status-bar
The system font used in window status bars.
Prefixed system font keywords
Browsers often implement several more, prefixed, keywords: Gecko implements -moz-window
, -moz-document
, -moz-desktop
, -moz-info
, -moz-dialog
, -moz-button
, -moz-pull-down-menu
, -moz-list
, and -moz-field
.
p {
font : 12px/14px sans-serif;
}
p {
font : 80% sans-serif;
}
p {
font : bold italic large serif;
}
p {
font : status-bar;
}
< p>
Change the radio buttons below to see the generated shorthand and it's effect.
</ p>
< form action = " createShortHand()" >
< div class = " cf" >
< div class = " setPropCont" >
font-style< br />
< input
type = " radio"
id = " font-style-none"
name = " font_style"
checked = " "
value = " "
onchange = " setCss ( ) " />
< label for = " font-style-none" > none</ label> < br />
< input
type = " radio"
id = " font-style-normal"
name = " font_style"
value = " normal"
onchange = " setCss ( ) " />
< label for = " font-style-normal" > normal</ label> < br />
< input
type = " radio"
id = " font-style-italic"
name = " font_style"
value = " italic"
onchange = " setCss ( ) " />
< label for = " font-style-italic" > italic</ label> < br />
< input
type = " radio"
id = " font-style-oblique"
name = " font_style"
value = " oblique"
onchange = " setCss ( ) " />
< label for = " font-style-oblique" > oblique</ label>
</ div>
< div class = " setPropCont" >
font-variant< br />
< input
type = " radio"
id = " font-variant-none"
name = " font_variant"
checked = " "
value = " "
onchange = " setCss ( ) " />
< label for = " font-variant-none" > none</ label> < br />
< input
type = " radio"
id = " font-variant-normal"
name = " font_variant"
value = " normal"
onchange = " setCss ( ) " />
< label for = " font-variant-normal" > normal</ label> < br />
< input
type = " radio"
id = " font-variant-small-caps"
name = " font_variant"
value = " small-caps"
onchange = " setCss ( ) " />
< label for = " font-variant-small-caps" > small-caps</ label>
</ div>
< div class = " setPropCont" >
font-weight< br />
< input
type = " radio"
id = " font-weight-none"
name = " font_weight"
value = " "
onchange = " setCss ( ) " />
< label for = " font-weight-none" > none</ label> < br />
< input
type = " radio"
id = " font-weight-normal"
checked = " "
name = " font_weight"
value = " 400"
onchange = " setCss ( ) " />
< label for = " font-weight-normal" > normal</ label> < br />
< input
type = " radio"
id = " font-weight-bold"
name = " font_weight"
value = " 700"
onchange = " setCss ( ) " />
< label for = " font-weight-bold" > bold</ label>
</ div>
< div class = " setPropCont" >
font-size< br />
< input
type = " radio"
id = " font-size-12px"
name = " font_size"
value = " 12px"
onchange = " setCss ( ) " />
< label for = " font-size-12px" > 12px</ label> < br />
< input
type = " radio"
id = " font-size-16px"
name = " font_size"
value = " 16px"
checked = " "
onchange = " setCss ( ) " />
< label for = " font-size-16px" > 16px</ label> < br />
< input
type = " radio"
id = " font-size-24px"
name = " font_size"
value = " 24px"
onchange = " setCss ( ) " />
< label for = " font-size-24px" > 24px</ label>
</ div>
< div class = " setPropCont" >
line-height< br />
< input
type = " radio"
id = " line-height-none"
name = " line_height"
checked = " "
value = " "
onchange = " setCss ( ) " />
< label for = " line-height-none" > none</ label> < br />
< input
type = " radio"
id = " line-height-1.2"
name = " line_height"
value = " /1.2"
onchange = " setCss ( ) " />
< label for = " line-height-1.2" > 1.2</ label> < br />
< input
type = " radio"
id = " line-height-3"
name = " line_height"
value = " /3"
onchange = " setCss ( ) " />
< label for = " line-height-3" > 3</ label>
</ div>
< br />
< div class = " setPropCont fontfamily" >
font-family< br />
< input
type = " radio"
id = " font-family-courier"
name = " font_family"
checked = " "
value = " courier"
onchange = " setCss ( 5 , 'courier' ) " />
< label for = " font-family-courier" > courier</ label> < br />
< input
type = " radio"
id = " font-family-serif"
name = " font_family"
value = " serif"
onchange = " setCss ( ) " />
< label for = " font-family-serif" > serif</ label> < br />
< input
type = " radio"
id = " font-family-sans-serif"
name = " font_family"
value = " sans-serif"
onchange = " setCss ( ) " />
< label for = " font-family-sans-serif" > sans-serif</ label> < br />
< input
type = " radio"
id = " font-family-arial"
name = " font_family"
value = " arial"
onchange = " setCss ( ) " />
< label for = " font-family-arial" > Arial</ label> < br />
< input
type = " radio"
id = " font-family-monospace"
name = " font_family"
value = " monospace"
onchange = " setCss ( ) " />
< label for = " font-family-monospace" > monospace</ label> < br />
< input
type = " radio"
id = " font-family-cursive"
name = " font_family"
value = " cursive"
onchange = " setCss ( ) " />
< label for = " font-family-cursive" > cursive</ label> < br />
< input
type = " radio"
id = " font-family-fantasy"
name = " font_family"
value = " fantasy"
onchange = " setCss ( ) " />
< label for = " font-family-fantasy" > fantasy</ label> < br />
< input
type = " radio"
id = " font-family-system-ui"
name = " font_family"
value = " system-ui"
onchange = " setCss ( ) " />
< label for = " font-family-system-ui" > system-ui</ label> < br />
</ div>
</ div>
< div class = " cf propInputs" >
< div class = " propInputCont tar" > font :</ div>
< div class = " propInputCont" >
< input type = " text" class = " curCss" id = " input_font_style" /> < br />
font-style < br />
optional
</ div>
< div class = " propInputCont" >
< input type = " text" class = " curCss" id = " input_font_variant" /> < br />
font-variant < br />
optional
</ div>
< div class = " propInputCont" >
< input type = " text" class = " curCss" id = " input_font_weight" /> < br />
font-weight < br />
optional
</ div>
< div class = " propInputCont" >
< input type = " text" class = " curCss mandatory" id = " input_font_size" /> < br />
font-size < br />
mandatory
</ div>
< div class = " propInputCont" >
< input type = " text" class = " curCss" id = " input_line_height" /> < br />
line-height < br />
optional
</ div>
< div class = " propInputCont" >
< input type = " text" class = " curCss mandatory" id = " input_font_family" />
< br />
font-family < br />
mandatory
</ div>
</ div>
</ form>
< div class = " fontShortHand" > This is some sample text.</ div>
< br /> < br /> < br /> < br /> < br /> < br />
body,
input {
font : 14px arial;
overflow : hidden;
}
.propInputCont {
float : left;
text-align : center;
margin-right : 5px;
width : 80px;
}
.setPropCont {
float : left;
margin-right : 5px;
width : 120px;
}
.propInputs,
.setPropCont {
margin-bottom : 1em;
}
.curCss {
border : none;
border-bottom : 1px solid black;
text-align : center;
width : 80px;
}
.mandatory {
border-bottom-color : red;
}
.cf:before,
.cf:after {
content : " " ;
display : table;
}
.cf:after {
clear : both;
}
.tar {
width : 40px;
text-align : right;
}
.fontfamily {
display : inline-block;
}
var textAreas = document. getElementsByClassName ( "curCss" ) ,
shortText = "" ,
getCheckedValue,
setCss,
getProperties,
injectCss;
getProperties = function ( ) {
shortText =
getCheckedValue ( "font_style" ) +
" " +
getCheckedValue ( "font_variant" ) +
" " +
getCheckedValue ( "font_weight" ) +
" " +
getCheckedValue ( "font_size" ) +
getCheckedValue ( "line_height" ) +
" " +
getCheckedValue ( "font_family" ) ;
return shortText;
} ;
getCheckedValue = function ( radio_name ) {
oRadio = document. forms[ 0 ] . elements[ radio_name] ;
for ( var i = 0 ; i < oRadio. length; i++ ) {
if ( oRadio[ i] . checked) {
var propInput = "input_" + radio_name,
curElemName = "input_" + radio_name,
curElem = document. getElementById ( curElemName) ;
curElem. value = oRadio[ i] . value;
return oRadio[ i] . value;
}
}
} ;
setCss = function ( ) {
getProperties ( ) ;
injectCss ( shortText) ;
} ;
injectCss = function ( cssFragment ) {
old = document. body. getElementsByTagName ( "style" ) ;
if ( old. length > 1 ) {
old[ 1 ] . parentElement. removeChild ( old[ 1 ] ) ;
}
css = document. createElement ( "style" ) ;
css. innerHTML = ".fontShortHand{font: " + cssFragment + "}" ;
document. body. appendChild ( css) ;
} ;
setCss ( ) ;
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