blocks|key|3068442|text|&quot;在有效HTML+4+entities的官方列表上，但&apos;不在。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3068443|来自C.16.+The+Named+Character+Reference+'|3068444|3068445|命名字符引用&apos;+(撇号，U%2B0027)是在XML1.0中引入的，但没有出现在中。因此，在HTML4用户代理中，作者应该使用&#39;而不是&apos;来实现预期的效果。|blockquote|3068446|3068447|entityMap|0|LINK|mutability|MUTABLE|url|http://www.w3.org/TR/html4/sgml/entities.html|1|http://www.w3.org/TR/xhtml1/#C_16^0|0|6|W|6|9|F|0|0|2|11|1|0|0|6|6|1U|5|22|6|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@$9|11|A|12|1|13]]|E|$]]|$1|F|3|G|5|6|7|14|8|@]|D|@$9|15|A|16|1|17]]|E|$]]|$1|H|3|-4|5|6|7|18|8|@]|D|@]|E|$]]|$1|I|3|J|5|K|7|19|8|@$9|1A|A|1B|B|C]|$9|1C|A|1D|B|C]|$9|1E|A|1F|B|C]]|D|@]|E|$]]|$1|L|3|-4|5|6|7|1G|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|1H|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]|U|$5|P|Q|R|E|$S|V]]]]

<code>&amp;quot;</code> is on the official list of valid <a href="http://www.w3.org/TR/html4/sgml/entities.html" rel="noreferrer">HTML 4 entities</a>, but <code>&amp;apos;</code> is not.

From <a href="http://www.w3.org/TR/xhtml1/#C_16" rel="noreferrer">C.16. The Named Character Reference &apos;</a>:

<blockquote>
 The named character reference <code>&amp;apos;</code>
 (the apostrophe, U+0027) was
 introduced in XML 1.0 but does not
 appear in HTML. Authors should
 therefore use <code>&amp;#39;</code> instead of
 <code>&amp;apos;</code> to work as expected in HTML 4
 user agents.
</blockquote>

blocks|key|319718|text|&quot;在HTML5和HTML4中都有效。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|319719|&apos;在HTML5中有效，但在HTML4中无效。但是，大多数浏览器无论如何都支持用于HTML4的&apos;。|319720|entityMap|0|LINK|mutability|MUTABLE|url|http://dev.w3.org/html5/html-author/charref|1|http://www.w3.org/TR/html4/sgml/entities.html^0|0|6|0|0|6|1F|6|7|5|0|I|5|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@$9|Z|A|10|1|11]|$9|12|A|13|1|14]]|E|$]]|$1|H|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]|P|$5|K|L|M|E|$N|Q]]]]

<code>&amp;quot;</code> is valid in both HTML5 and HTML4.

<code>&amp;apos;</code> is valid in <a href="http://dev.w3.org/html5/html-author/charref">HTML5</a>, but not <a href="http://www.w3.org/TR/html4/sgml/entities.html">HTML4</a>. However, most browsers support <code>&amp;apos;</code> for HTML4 anyway.

blocks|key|317810|text|&apos;不是HTML4标准的一部分。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|317811|不过，&quot;是这样的，所以使用起来很好。|317812|entityMap^0|0|6|0|3|6|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|P|8|@]|D|@]|E|$]]]|I|$]]

<code>&amp;apos;</code> is not part of the HTML 4 standard.

<code>&amp;quot;</code> is, though, so is fine to use.

blocks|key|3068484|text|如果需要编写语义正确的标记，即使是在HTML5中，也不能使用&apos;转义单引号。不过，我可以想象你实际上指的是撇号而不是单引号。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3068485|single+quotes和apostrophes在语义上并不相同，尽管它们看起来可能是一样的。|3068486|3068487|这里有一个撇号。|blockquote|3068488|3068489|3068490|如果需要HTML4支持，可以使用&#39;将其插入。(编辑)|3068491|在英式英语中，单引号的用法如下：|3068492|3068493|“他告诉我‘试一试’，我说。|3068494|3068495|3068496|引文成对出现。您可以使用：|3068497|<q>He+told+me+to+<q>give+it+a+try</q></q>,+I+said.|3068498|以语义正确的方式嵌套引号，将实际字符的替换推迟到呈现引擎。这种替换可能会受到CSS+rules的影响，例如：|3068499|q+{
++quotes:+'"'+'"'+'<'+'>';
}+|code-block|syntax|javascript|3068500|一篇关于语义正确标记的古老但似乎仍然相关的文章：The+Trouble+With+EM+’n+EN+(and+Other+Shady+Characters)。|3068501|(编辑)这曾经是：|3068502|3068503|如果您需要HTML4支持，请使用‘插入它。|3068504|3068505|3068506|但是，正如@James_pic所指出的，这不是直接的单引号，而是“单弧形引号，对”。|3068507|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/Quotation_mark|1|http://en.wikipedia.org/wiki/Apostrophe|2|http://www.w3.org/TR/CSS21/generate.html#propdef-quotes|3|http://alistapart.com/article/emen^0|U|6|0|0|D|0|E|B|1|0|0|0|0|0|G|5|0|0|0|0|0|0|0|0|1K|0|12|9|2|0|0|O|1I|3|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1W|8|@$9|1X|A|1Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1Z|8|@]|D|@$9|20|A|21|1|22]|$9|23|A|24|1|25]]|E|$]]|$1|H|3|-4|5|6|7|26|8|@]|D|@]|E|$]]|$1|I|3|J|5|K|7|27|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|28|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|29|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|2A|8|@$9|2B|A|2C|B|C]]|D|@]|E|$]]|$1|P|3|Q|5|6|7|2D|8|@]|D|@]|E|$]]|$1|R|3|-4|5|6|7|2E|8|@]|D|@]|E|$]]|$1|S|3|T|5|K|7|2F|8|@]|D|@]|E|$]]|$1|U|3|-4|5|6|7|2G|8|@]|D|@]|E|$]]|$1|V|3|-4|5|6|7|2H|8|@]|D|@]|E|$]]|$1|W|3|X|5|6|7|2I|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|6|7|2J|8|@$9|2K|A|2L|B|C]]|D|@]|E|$]]|$1|10|3|11|5|6|7|2M|8|@]|D|@$9|2N|A|2O|1|2P]]|E|$]]|$1|12|3|13|5|14|7|2Q|8|@]|D|@]|E|$15|16]]|$1|17|3|18|5|6|7|2R|8|@]|D|@$9|2S|A|2T|1|2U]]|E|$]]|$1|19|3|1A|5|6|7|2V|8|@]|D|@]|E|$]]|$1|1B|3|-4|5|6|7|2W|8|@]|D|@]|E|$]]|$1|1C|3|1D|5|K|7|2X|8|@]|D|@]|E|$]]|$1|1E|3|-4|5|6|7|2Y|8|@]|D|@]|E|$]]|$1|1F|3|-4|5|6|7|2Z|8|@]|D|@]|E|$]]|$1|1G|3|1H|5|6|7|30|8|@]|D|@]|E|$]]|$1|1I|3|-4|5|6|7|31|8|@]|D|@]|E|$]]]|1J|$1K|$5|1L|1M|1N|E|$1O|1P]]|1Q|$5|1L|1M|1N|E|$1O|1R]]|1S|$5|1L|1M|1N|E|$1O|1T]]|1U|$5|1L|1M|1N|E|$1O|1V]]]]

If you need to write semantically correct mark-up, even in HTML5, you must not use <code>&amp;apos;</code> to escape single quotes. Although, I can imagine you actually meant apostrophe rather then single quote.

<a href="http://en.wikipedia.org/wiki/Quotation_mark" rel="nofollow noreferrer">single quotes</a> and <a href="http://en.wikipedia.org/wiki/Apostrophe" rel="nofollow noreferrer">apostrophes</a> are not the same, semantically, although they might look the same.

<blockquote>
 Here's one apostrophe.
</blockquote>

Use <code>&amp;#39;</code> to insert it if you need HTML4 support. (edited)

In British English, single quotes are used like this: 

<blockquote>
 "He told me to 'give it a try'", I said.
</blockquote>

Quotes come in pairs. You can use: 

<code>&lt;p&gt;&lt;q&gt;He told me to &lt;q&gt;give it a try&lt;/q&gt;&lt;/q&gt;, I said.&lt;p&gt;</code>

to have nested quotes in a semantically correct way, deferring the substitution of the actual characters to the rendering engine. This substitution can then be affected by <a href="http://www.w3.org/TR/CSS21/generate.html#propdef-quotes" rel="nofollow noreferrer">CSS rules</a>, like:



<pre class="lang-css prettyprint-override"><code>q {
 quotes: '"' '"' '&lt;' '&gt;';
} 
</code></pre>

An old but seemingly still relevant article about semantically correct mark-up: <a href="http://alistapart.com/article/emen" rel="nofollow noreferrer">The Trouble With EM ’n EN (and Other Shady Characters)</a>.

(edited) This used to be:

<blockquote>
 Use &#8217; to insert it if you need HTML4 support.
</blockquote>

But, as @James_pic pointed out, that is not the straight single quote, but the "Single curved quote, right".

blocks|key|3068457|text|如果您确实需要单引号、撇号，您可以使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3068458|html++++%7C+numeric+%7C+hex
&lsquo;+%7C+&#145;++%7C+&#x91;+//+for+the+left/beginning+single-quote+and
&rsquo;+%7C+&#146;++%7C+&#x92;+//+for+the+right/ending+single-quote|code-block|syntax|javascript|3068459|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

As stated in, <a href="https://stackoverflow.com/questions/242766/when-did-single-quotes-in-html-become-so-popular">When did single quotes in HTML become so popular?</a> and <a href="https://stackoverflow.com/questions/1263141/jquery-embedded-quote-in-attribute">Jquery embedded quote in attribute</a>, the Wikipedia entry on <a href="https://en.wikipedia.org/wiki/HTML#Character_and_entity_references" rel="nofollow noreferrer">HTML</a> says the following:
<blockquote>
The single-quote character ('), when used to quote an attribute value, must also be escaped as <code>&amp;#x27;</code> or <code>&amp;#39;</code> (should NOT be escaped as <code>&amp;apos;</code> except in XHTML documents) when it appears within the attribute value itself.
</blockquote>
Why shouldn't <code>&amp;apos;</code> be used? Also, is <code>&amp;quot;</code> safe to be used instead of <code>&amp;#34;</code>?

Why shouldn't `&apos;` be used to escape single quotes?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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如和中所述，上的维基百科条目如下：当单引号字符(')用于引用属性值时，当它出现在属性值本身中时，还必须将其转义为&#x27;或&#39; (除非在文档中，否则不应转义为&apos; )。为什么不能使用&apos;？另外，用&quot;代替&#34;安全吗？

问为什么不应该使用‘&apos；’来转义单引号？
EN

回答 5

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问为什么不应该使用‘&apos；’来转义单引号？EN

回答 5

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问为什么不应该使用‘&apos；’来转义单引号？
EN