How to use html escape characters
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。
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:
&lt;code&gt;&字符名称;&lt;/code&gt;
例如:
-
&lt;
表示小于号(<) &gt;
表示大于号(>)-
&
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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