1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
|
---
title: font
slug: Web/CSS/font
translation_of: Web/CSS/font
---
<p>{{ CSSRef() }}</p>
<h2 id="概述">概述</h2>
<p><code>font</code> 属性可以用来作为 {{ Cssxref("font-style") }}, {{ Cssxref("font-variant") }}, {{ Cssxref("font-weight") }}, {{ Cssxref("font-size") }}, {{ Cssxref("line-height") }} 和 {{ Cssxref("font-family") }} 属性的简写，或将元素的字体设置为系统字体。</p>
<p>{{EmbedInteractiveExample("pages/css/font.html")}}</p>
<div class="hidden">
<p>The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone <a href="https://github.com/mdn/interactive-examples">https://github.com/mdn/interactive-examples</a> and send us a pull request.</p>
</div>
<p>与任何简写属性一样，任何未指定的值都将设置为其对应的初始值（可能覆盖先前使用非简写属性设置的值）。 虽然不能通过 font 直接设置，但是{{ cssxref("font-stretch") }}，{{ cssxref("font-size-adjust") }} 和 {{ cssxref("font-kerning") }} 也会重置为初始值。</p>
<h2 id="语法">语法</h2>
<p>可以将<code>font</code>属性指定为单个关键字，它将选择系统字体，或者作为字体相关的属性的简写。</p>
<p><span class="tlid-translation translation" lang="zh-CN"><span title="">如果将</span></span> <code>font</code> <span class="tlid-translation translation" lang="zh-CN"><span title="">指定为系统关键字，则它必须是以下之一：</span></span><code><a href="https://developer.mozilla.org/zh-CN/docs/Web/CSS/font$edit#caption">caption</a></code>, <code><a href="https://developer.mozilla.org/zh-CN/docs/Web/CSS/font$edit#icon">icon</a></code>, <code><a href="https://developer.mozilla.org/zh-CN/docs/Web/CSS/font$edit#menu">menu</a></code>, <code><a href="https://developer.mozilla.org/zh-CN/docs/Web/CSS/font$edit#message-box">message-box</a></code>, <code><a href="https://developer.mozilla.org/zh-CN/docs/Web/CSS/font$edit#small-caption">small-caption</a></code>, <code><a href="https://developer.mozilla.org/zh-CN/docs/Web/CSS/font$edit#status-bar">status-bar</a></code><span class="tlid-translation translation" lang="zh-CN"><span title="">。</span></span></p>
<p>如果 <code>font</code> 字体相关的属性的简写：</p>
<ul>
<li>必须包含以下值：
<ul>
<li>{{cssxref("<font-size>")}}</li>
<li>{{cssxref("<font-family>")}}</li>
</ul>
</li>
<li>可以选择性包含以下值：
<ul>
<li>{{cssxref("<font-style>")}}</li>
<li>{{cssxref("<font-variant>")}}</li>
<li>{{cssxref("<font-weight>")}}</li>
<li>{{cssxref("<line-height>")}}</li>
</ul>
</li>
<li><code>font-style</code>, <code>font-variant</code> 和 <code>font-weight</code> 必须在 <code>font-size</code> 之前</li>
<li>在 CSS 2.1 中 <code>font-variant</code> 只可以是 <code>normal</code> 和 <code>small-caps</code></li>
<li><code>line-height</code> 必须跟在 <code>font-size</code> 后面，由 "/" 分隔，例如 "<code>16px/3</code>"</li>
<li><code>font-family</code> 必须最后指定</li>
</ul>
<h3 id="值">值</h3>
<dl>
<dt><code><'font-style'></code></dt>
<dd>见 {{ Cssxref("font-style") }} 属性。</dd>
<dt><code><'font-variant'></code></dt>
<dd>见 {{ Cssxref("font-variant") }} 属性。</dd>
<dt><code><'font-weight'></code></dt>
<dd>见 {{ Cssxref("font-weight") }} 属性。</dd>
<dt><code><'font-size'></code></dt>
<dd>见 {{ Cssxref("font-size") }} 属性。</dd>
<dt><code><'line-height'></code></dt>
<dd>见 {{ cssxref("line-height") }} 属性。</dd>
<dt><code><'font-family'></code></dt>
<dd>见 {{ Cssxref("font-family") }} 属性。</dd>
<dt>
<h4 id="系统字体">系统字体</h4>
</dt>
<dt id="caption"><code>caption</code></dt>
<dd>用于标题控件（如按钮，下拉列表等）的系统字体。</dd>
<dt id="icon"><code>icon</code></dt>
<dd>用于标签图标的系统字体。</dd>
<dt id="menu"><code>menu</code></dt>
<dd>菜单中（如下拉菜单和菜单列表）使用的系统字体。</dd>
<dt id="message-box"><code>message-box</code></dt>
<dd>用于对话框的系统字体。</dd>
<dt id="small-caption"><code>small-caption</code></dt>
<dd>用于小标题控件的系统字体。</dd>
<dt id="status-bar"><code>status-bar</code></dt>
<dd>用于窗口状态栏的系统字体。</dd>
<dt>系统关键字前缀</dt>
<dd>浏览器经常会多实现几个带前缀的关键字；Gecko 实现了 <code>-moz-window</code>, <code>-moz-document</code>, <code>-moz-desktop</code>, <code>-moz-info</code>, <code>-moz-dialog</code>, <code>-moz-button</code>, <code>-moz-pull-down-menu</code>, <code>-moz-list</code>, 和 <code>-moz-field</code>.</dd>
<dt>
<h3 id="正式语法">正式语法</h3>
</dt>
</dl>
<pre class="syntaxbox">{{csssyntax("font")}}</pre>
<h2 id="示例">示例</h2>
<pre class="brush: css line-numbers language-css"><code class="language-css"><span class="comment token">/* Set the font size to 12px and the line height to 14px.
Set the font family to sans-serif */</span>
<span class="selector token">p</span> <span class="punctuation token">{</span> <span class="property token">font</span><span class="punctuation token">:</span> <span class="number token">12</span><span class="token unit">px</span>/<span class="number token">14</span><span class="token unit">px</span> sans-serif <span class="punctuation token">}</span>
<span class="comment token">/* Set the font size to 80% of the parent element
or default value (if no parent element present).
Set the font family to sans-serif */</span>
<span class="selector token">p</span> <span class="punctuation token">{</span> <span class="property token">font</span><span class="punctuation token">:</span> <span class="number token">80</span><span class="token unit">%</span> sans-serif <span class="punctuation token">}</span>
<span class="comment token">/* Set the font weight to bold,
the font-style to italic,
the font size to large,
and the font family to serif. */</span>
<span class="selector token">p</span> <span class="punctuation token">{</span> <span class="property token">font</span><span class="punctuation token">:</span> bold italic large serif <span class="punctuation token">}</span>
<span class="comment token">/* Use the same font as the status bar of the window */</span>
<span class="selector token">p</span> <span class="punctuation token">{</span> <span class="property token">font</span><span class="punctuation token">:</span> status-bar <span class="punctuation token">}</span></code></pre>
<h3 id="live_sample" name="live_sample">实样</h3>
<p id="HTML_Content" class="hidden">HTML Content</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>
<div class="setPropCont">
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>
</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>
</pre>
<p id="CSS_Content" class="hidden">CSS Content</p>
<pre class="brush: css" class="hidden">body, input {
font: 14px arial;
}
.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;
}</pre>
<p id="JavaScript_Content" class="hidden">JavaScript Content</p>
<pre class="brush: js" class="hidden">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();</pre>
<p>{{ EmbedLiveSample('live_sample','100%', '380px') }}</p>
<h2 id="Notes" name="Notes">规范</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">规范</th>
<th scope="col">状态</th>
<th scope="col">注释</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{ SpecName('CSS3 Fonts', '#font', 'font') }}</td>
<td>{{ Spec2('CSS3 Fonts') }}</td>
<td>添加对 <code>font-stretch</code> 的支持</td>
</tr>
<tr>
<td>{{ SpecName('CSS2.1', 'fonts.html#font-shorthand', 'font-weight') }}</td>
<td>{{ Spec2('CSS2.1') }}</td>
<td>添加对关键字的支持</td>
</tr>
<tr>
<td>{{ SpecName('CSS1', '#font', 'font') }}</td>
<td>{{ Spec2('CSS1') }}</td>
<td>初始定义</td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性"><span class="tlid-translation translation" lang="zh-CN"><span title="">浏览器兼容性</span></span></h2>
<p>{{Compat("css.properties.font")}}</p>
|
