HTML 轉(zhuǎn)義字符用于在 HTML 代碼中表示特殊字符,使其不會與 HTML 標(biāo)簽混淆。常用的 HTML 轉(zhuǎn)義字符包括 <、>、&、"、'、?、?、? 和 €。使用 HTML 轉(zhuǎn)義字符可保留 HTML 標(biāo)簽的含義、包含特殊符號和防止跨站腳本攻擊。
HTML 轉(zhuǎn)義字符使用方法
什么是 HTML 轉(zhuǎn)義字符?
HTML 轉(zhuǎn)義字符用于在 HTML 代碼中表示特殊字符。這些字符通常用于保留 HTML 標(biāo)簽的含義,或者在文本中包含特殊符號。
如何使用 HTML 轉(zhuǎn)義字符?
要使用 HTML 轉(zhuǎn)義字符,請使用以下語法:
&lt;code&gt;&字符名稱;&lt;/code&gt;
例如:
-
&lt;
表示小于號(<) &gt;
表示大于號(>)-
&
表示與號(&)
常用的 HTML 轉(zhuǎn)義字符
以下是常用的 HTML 轉(zhuǎn)義字符:
實體名稱 | 字符 | 描述 |
---|---|---|
< | < | 小于號 |
> | > | 大于號 |
& | & | 與號 |
" | " | 雙引號 |
' | ' | 單引號 |
? | 空格 | |
? | ? | 版權(quán)符號 |
? | ? | 注冊商標(biāo)符號 |
€ | € | 歐元符號 |
為什么要使用 HTML 轉(zhuǎn)義字符?
使用 HTML 轉(zhuǎn)義字符非常重要,原因如下:
- 保留 HTML 標(biāo)簽的含義:如果標(biāo)簽字符(如尖括號)直接出現(xiàn)在文本中,可能會與 HTML 標(biāo)簽混淆,導(dǎo)致解析錯誤。
- 包含特殊符號:某些符號,例如引號和與號,在 HTML 中用途特殊。轉(zhuǎn)義這些字符可確保它們按文本顯示,而不是作為 HTML 命令。
- 防止跨站腳本攻擊(XSS):惡意用戶可能會嘗試在文本中注入腳本,從而危害網(wǎng)站。轉(zhuǎn)義字符有助于防止這些攻擊。
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