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
|
---
title: '<u>: Элемент слабой аннотации (подчеркивание)'
slug: Web/HTML/Element/u
translation_of: Web/HTML/Element/u
---
<div>{{HTMLRef}}</div>
<p><span class="seoSummary">The HTML <strong>Unarticulated Annotation Element</strong> (<strong><code><u></code></strong>) represents a span of inline text which should be rendered in a way that indicates that it has a non-textual annotation.</span> This is rendered by default as a simple solid underline, but may be altered using CSS.</p>
<div class="warning">
<p>This element used to be called the "Underline" element in older versions of HTML, and is still sometimes misused in this way. To underline text, you should instead apply a style that includes the CSS {{cssxref("text-decoration")}} property set to <code>underline</code>.</p>
</div>
<div>{{EmbedInteractiveExample("pages/tabbed/u.html", "tabbed-shorter")}}</div>
<p>See the {{anch("Usage notes")}} section for further details on when it's appropriate to use <code><u></code> and when it isn't.</p>
<table class="properties">
<tbody>
<tr>
<th scope="row"><a href="/en-US/docs/Web/HTML/Content_categories">Content categories</a></th>
<td><a href="/en-US/docs/Web/HTML/Content_categories#Flow_content">Flow content</a>, <a href="/en-US/docs/Web/HTML/Content_categories#Phrasing_content">phrasing content</a>, palpable content.</td>
</tr>
<tr>
<th scope="row">Permitted content</th>
<td><a href="/en-US/docs/Web/HTML/Content_categories#Phrasing_content">Phrasing content</a>.</td>
</tr>
<tr>
<th scope="row">Tag omission</th>
<td>{{no_tag_omission}}</td>
</tr>
<tr>
<th scope="row">Permitted parents</th>
<td>Any element that accepts <a href="/en-US/docs/Web/HTML/Content_categories#Phrasing_content">phrasing content</a>.</td>
</tr>
<tr>
<th scope="row">Permitted ARIA roles</th>
<td>Any</td>
</tr>
<tr>
<th scope="row">DOM interface</th>
<td>{{domxref("HTMLElement")}}</td>
</tr>
</tbody>
</table>
<h2 id="Атрибуты">Атрибуты</h2>
<p>This element only includes the <a href="/en-US/docs/Web/HTML/Global_attributes">global attributes</a>.</p>
<h2 id="Использование">Использование</h2>
<p>Along with other pure styling elements, the original HTML Underline (<code><u></code>) element was deprecated in HTML 4; however, <code><u></code> was restored in HTML 5 with a new, semantic, meaning: to mark text as having some form of non-textual annotation applied.</p>
<div class="note">
<p>Be careful to avoid using the <code><u></code> element with its default styling (of underlined text) in such a way as to be confused with a hyperlink, which is also underlined by default.</p>
</div>
<h3 id="Use_cases">Use cases</h3>
<p>Valid use cases for the <code><u></code> element include annotating spelling errors, applying a {{interwiki("wikipedia", "proper name mark")}} to denote proper names in Chinese text, and other forms of annotation.</p>
<p>You should <em>not</em> use <code><u></code> to simply underline text for presentation purposes, or to denote titles of books.</p>
<h3 id="Other_elements_to_consider_using">Other elements to consider using</h3>
<p>In most cases, you should use an element other than <code><u></code>, such as:</p>
<ul>
<li>{{HTMLElement("em")}} to denote stress emphasis</li>
<li>{{HTMLElement("b")}} to draw attention to text</li>
<li>{{HTMLElement("mark")}} to mark key words or phrases</li>
<li>{{HTMLElement("strong")}} to indicate that text has strong importance</li>
<li>{{HTMLElement("cite")}} to mark the titles of books or other publications</li>
<li>{{HTMLElement("i")}} to denote technical terms, transliterations, thoughts, or names of vessels in Western texts</li>
</ul>
<p>To provide textual annotations (as opposed to the non-textual annotations created with <code><u></code>), use the {{HTMLElement("ruby")}} element.</p>
<p>To apply an underlined appearance without any semantic meaning, use the {{cssxref("text-decoration")}} property's value <code>underline</code>.</p>
<h2 id="Примеры">Примеры</h2>
<h3 id="Indicating_a_spelling_error">Indicating a spelling error</h3>
<p>This example uses the <code><u></code> element and some CSS to display a paragraph which includes a misspelled error, with the error indicated in the red wavy underline style which is fairly commonly used for this purpose.</p>
<h4 id="HTML">HTML</h4>
<pre class="brush: html"><p>This paragraph includes a <u class="spelling">wrnogly</u>
spelled word.</p></pre>
<p>In the HTML, we see the use of <code><u></code> with a class, <code>spelling</code>, which is used to indicate the misspelling of the word "wrongly".</p>
<h4 id="CSS">CSS</h4>
<pre class="brush: css">u.spelling {
text-decoration: red wavy underline;
}</pre>
<p>This CSS indicates that when the <code><u></code> element is styled with the class <code>spelling</code>, it should have a red wavy underline underneath its text. This is a common styling for spelling errors. Another common style can be presented using <code>red dashed underline</code>.</p>
<h4 id="Result">Result</h4>
<p>The result should be familiar to anyone who has used any of the more popular word processors available today.</p>
<p>{{EmbedLiveSample("Indicating_a_spelling_error", 650, 80)}}</p>
<h3 id="Avoiding_<u>">Avoiding <u></h3>
<p>Most of the time, you actually don't want to use <code><u></code>. Here are some examples that show what you should do instead in several cases.</p>
<h4 id="Non-semantic_underlines">Non-semantic underlines</h4>
<p>To underline text without implying any semantic meaning, use a {{HTMLElement("span")}} element with the {{cssxref("text-decoration")}} property set to <code>"underline"</code>, as shown below.</p>
<h5 id="HTML_2">HTML</h5>
<pre class="brush: html"><span class="underline">Today's Special</span>
<br>
Chicken Noodle Soup With Carrots</pre>
<h5 id="CSS_2">CSS</h5>
<pre class="brush: css">.underline {
text-decoration: underline;
}</pre>
<h5 id="Result_2">Result</h5>
<p>{{EmbedLiveSample("Non-semantic_underlines", 650, 80)}}</p>
<h4 id="Presenting_a_book_title">Presenting a book title</h4>
<div id="example-unstyled-cite">
<p>Book titles should be presented using the {{HTMLElement("cite")}} element instead of <code><u></code> or even <code><i></code>.</p>
<h5 id="HTML_3">HTML</h5>
<pre class="brush: html"><p>The class read <cite>Moby Dick</cite> in the first term.</p></pre>
<h5 id="Result_with_default_style">Result with default style</h5>
<p>{{EmbedLiveSample("example-unstyled-cite", 650, 80)}}</p>
</div>
<p>Note that the default styling for the <code><cite></code> element renders the text in italics. You can, if you wish, override that using CSS:</p>
<pre class="brush: css">cite {
font-style: normal;
text-decoration: underline;
}</pre>
<h5 id="Result_with_custom_style">Result with custom style</h5>
<p>{{EmbedLiveSample("Presenting_a_book_title", 650, 80)}}</p>
<h2 id="Спецификации">Спецификации</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">Specification</th>
<th scope="col">Status</th>
<th scope="col">Comment</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName('HTML WHATWG', 'text-level-semantics.html#the-u-element', '<u>')}}</td>
<td>{{Spec2('HTML WHATWG')}}</td>
<td></td>
</tr>
<tr>
<td>{{SpecName('HTML5 W3C', 'text-level-semantics.html#the-u-element', '<u>')}}</td>
<td>{{Spec2('HTML5 W3C')}}</td>
<td></td>
</tr>
<tr>
<td>{{SpecName('HTML4.01', 'present/graphics.html#h-15.2.1', '<b>')}}</td>
<td>{{Spec2('HTML4.01')}}</td>
<td></td>
</tr>
</tbody>
</table>
<h2 id="Поддержка_браузерами">Поддержка браузерами</h2>
<div class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a class="external" href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</div>
<p>{{Compat("html.elements.u")}}</p>
<h2 id="См._также">См. также</h2>
<ul>
<li>The {{HTMLElement("span")}}, {{HTMLElement("i")}}, {{HTMLElement("em")}}, {{HTMLElement("b")}}, and {{HTMLElement("cite")}} elements should usuallly be used instead.</li>
<li>The CSS {{cssxref("text-decoration")}} property should be used for non-semantic underlining.</li>
</ul>
|
