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html replacement characters

王林

May 15, 2023 pm 04:09 PM

HTML （Hypertext Markup Language）是一种用于构建网页的标记语言。在HTML中，有许多特殊字符（例如小于号、大于号、引号等），这些字符被称为“保留字符”或“转义字符”。这些特殊字符可能会干扰你的HTML代码，因此有时需要将它们替换为它们的实体字符或代码。

我们来讲一讲如何在HTML中替换字符。

替换小于号和大于号

在HTML中，小于号和大于号“”被用于标记标签的开始和结束。如果要在HTML中使用这些字符实体而不是标签，我们需要将它们替换为以下实体字符：

“
“>”替换为“>”

例如，如果你想在HTML中显示一个包含小于号和大于号的字符串，可以按照以下方式编写：

<Hello> World!

输出结果为：

<Hello> World!

替换单引号和双引号

在HTML中，单引号和双引号用于定义属性值。如果想在HTML中使用这些字符本身而不是属性值，我们需要将它们替换为以下实体字符：

单引号“'”替换为“'”
双引号“"”替换为“"”

例如，如果你想在HTML中显示一个包含单引号和双引号的字符串，可以按照以下方式编写：

She said, "I&apos;m happy."

输出结果为：

She said, "I'm happy."

替换版权标志

在HTML中，版权标志用于表示文本、图片等的版权归属。如果想在HTML中使用版权标志符号“©”，我们需要将它们替换为以下实体字符：

版权标志“©”替换为“©”

Copyright &copy; 2020 My Website

输出结果为：

Copyright © 2020 My Website

替换其它特殊字符

在HTML中，还有一些其它特殊字符，例如注册商标符号、不断开空格符号等。如果要在HTML中使用这些特殊字符，我们需要将它们替换为以下实体字符：

注册商标符号“®”替换为“®”
不断开空格符号“ ”（第二个字符为不可见字符）替换为“ ”

例如，如果你想在HTML中使用注册商标符号“®”和不断开空格符号，在代码中需要这样写：

Trademark &reg; and a non-breaking space.

输出结果为：

Trademark ® and a non-breaking space.

需要注意的是，不要滥用特殊字符实体。在现代网站中，使用CSS样式和JavaScript功能可以很好地替代大多数特殊字符实体，这样可保持HTML代码整洁和易读。

总结

当在HTML中需要使用特殊字符时，使用字符实体是一种很好的方式。HTML字符实体使用简单，而且可以使代码更通用、更易于阅读和理解。谨记上述方法，就可以很好地掌握如何在HTML中替换特殊字符了！

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