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May 21, 2023 pm 04:06 PM

&lt;p&gt;HTML实体是由特殊字符组成的编码或符号，用来在HTML文档中呈现无法直接输入或显示的字符。例如，我们不能在HTML文档中直接输入小于符号（），因为它们被浏览器解释为HTML标记。为了解决这个问题，HTML提供了实体编码方法。&lt;/p&gt; &lt;p&gt;HTML实体编码以“&”符号开始，以“;”符号结束。下面是一些常见的HTML实体编码示例：&lt;/p&gt; &lt;table&gt; &lt;thead&gt;&lt;tr&gt; &lt;th&gt;实体编码&lt;/th&gt; &lt;th&gt;字符&lt;/th&gt; &lt;th&gt;描述&lt;/th&gt; &lt;/tr&gt;&lt;/thead&gt; &lt;tbody&gt; &lt;tr&gt; &lt;td&gt;&lt;code&gt; &lt;/code&gt;&lt;/td&gt; &lt;td&gt;空格&lt;/td&gt; &lt;td&gt;空格标记（Non-Breaking Space）&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&lt;code&gt;&lt;&lt;/code&gt;&lt;/td&gt;&lt;td&gt;&lt;&lt;/td&gt;&lt;td&gt;小于号&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td&gt;&lt;code&gt;&gt;&lt;/code&gt;&lt;/td&gt; &lt;td&gt;&gt;&lt;/td&gt; &lt;td&gt;大于号&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&lt;code&gt;&&lt;/code&gt;&lt;/td&gt; &lt;td&gt;&&lt;/td&gt; &lt;td&gt;& 符号&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&lt;code&gt;"&lt;/code&gt;&lt;/td&gt; &lt;td&gt;"&lt;/td&gt; &lt;td&gt;双引号&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&lt;code&gt;'&lt;/code&gt;&lt;/td&gt; &lt;td&gt;'&lt;/td&gt; &lt;td&gt;单引号&lt;/td&gt; &lt;/tr&gt; &lt;/tbody&gt; &lt;/table&gt; &lt;p&gt;在HTML中，实体编码被用来表示特殊的字符或符号，包括空格、引号、括号等。例如，在HTML页面中我们想要显示“1 &lt;/p&gt; &lt;p&gt;同时，对于某些需要转义的字符，例如“&”、“”、“”等，我们也可以使用实体编码来转义，以确保其在HTML中正确显示。&lt;/p&gt; &lt;p&gt;下面是一些HTML实体编码的例子：&lt;/p&gt; &lt;p&gt;&lt;code&gt; &lt;/code&gt; - &lt;/p&gt; &lt;p&gt;&lt;code&gt;&lt;&lt;/code&gt; - &lt;&lt;/p&gt;&lt;p&gt;&lt;code&gt;&gt;&lt;/code&gt; - &gt;&lt;/p&gt; &lt;p&gt;&lt;code&gt;&&lt;/code&gt; - &&lt;/p&gt; &lt;p&gt;&lt;code&gt;"&lt;/code&gt; - "&lt;/p&gt; &lt;p&gt;&lt;code&gt;'&lt;/code&gt; - '&lt;/p&gt; &lt;p&gt;&lt;code&gt;¢&lt;/code&gt; - ¢&lt;/p&gt; &lt;p&gt;&lt;code&gt;£&lt;/code&gt; - £&lt;/p&gt; &lt;p&gt;&lt;code&gt;¥&lt;/code&gt; - ¥&lt;/p&gt; &lt;p&gt;&lt;code&gt;€&lt;/code&gt; - €&lt;/p&gt; &lt;p&gt;&lt;code&gt;©&lt;/code&gt; - ©&lt;/p&gt; &lt;p&gt;&lt;code&gt;®&lt;/code&gt; - ®&lt;/p&gt; &lt;p&gt;&lt;code&gt;™&lt;/code&gt; - ™&lt;/p&gt; &lt;p&gt;尽管有些编程软件或编辑器具有自动生成HTML实体编码的功能，但在某些情况下，我们可能需要手动转换文本中的字符，例如在编写HTML邮件时。在这种情况下，我们可以使用HTML实体编码转换工具来将特殊字符转换为实体编码。&lt;/p&gt; &lt;p&gt;总之，HTML实体编码是HTML中的一个重要概念，它可以帮助我们正确显示特殊字符和符号，并且在其中嵌入HTML代码时保持文本的一致性和清晰性。通过使用HTML实体编码，我们可以避免许多常见的错误和不必要的麻烦。&lt;/p&gt;

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