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How to use html escape characters

Apr 22, 2024 am 10:39 AM

HTML 转义字符用于在 HTML 代码中表示特殊字符,使其不会与 HTML 标签混淆。常用的 HTML 转义字符包括 <、>、&、"、'、 、©、® 和 €。使用 HTML 转义字符可保留 HTML 标签的含义、包含特殊符号和防止跨站脚本攻击。

How to use html escape characters

HTML 转义字符使用方法

什么是 HTML 转义字符?

HTML 转义字符用于在 HTML 代码中表示特殊字符。这些字符通常用于保留 HTML 标签的含义,或者在文本中包含特殊符号。

如何使用 HTML 转义字符?

要使用 HTML 转义字符,请使用以下语法:

&amp;lt;code&amp;gt;&amp;字符名称;&amp;lt;/code&amp;gt;
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例如:

  • &amp;lt; 表示小于号(<)
  • &amp;gt; 表示大于号(>)
  • &amp; 表示与号(&)

常用的 HTML 转义字符

以下是常用的 HTML 转义字符:

实体名称 字符 描述
<<小于号
> > 大于号
& & 与号
" " 双引号
' ' 单引号
  空格
© © 版权符号
® ® 注册商标符号
欧元符号

为什么要使用 HTML 转义字符?

使用 HTML 转义字符非常重要,原因如下:

  • 保留 HTML 标签的含义:如果标签字符(如尖括号)直接出现在文本中,可能会与 HTML 标签混淆,导致解析错误。
  • 包含特殊符号:某些符号,例如引号和与号,在 HTML 中用途特殊。转义这些字符可确保它们按文本显示,而不是作为 HTML 命令。
  • 防止跨站脚本攻击(XSS):恶意用户可能会尝试在文本中注入脚本,从而危害网站。转义字符有助于防止这些攻击。

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