Html & 或 & 如果我们在 xhtml 文档中使用 utf8，&（＆符号）应该使用什么？
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& or & what should be used for & (ampersand) if we are using utf8 in xhtml document?
提问by Jitendra Vyas
What is the difference between this &and this &for &(ampersand)? What should be use with utf8 ?
&(&) 的this&和 this 有什么区别&？utf8 应该使用什么？
回答by Gumbo
Both are character referencesand refer to the same character (AMPERSAND, U+0026). &is a named or entity character reference and &is a numerical character reference.
两者都是字符引用并引用相同的字符（AMPERSAND， U+0026 ）。&是命名或实体字符引用并且&是数字字符引用。
In fact, &is actually just a substitution for &(see list of character entities):
事实上，&实际上只是替代&（参见字符实体列表）：
<!ENTITY amp CDATA "&" -- ampersand, U+0026 ISOnum -->
<!ENTITY amp CDATA "&" -- ampersand, U+0026 ISOnum -->
回答by Joel Etherton
http://www.xml.com/pub/a/2001/01/31/qanda.html
http://www.xml.com/pub/a/2001/01/31/qanda.html
According to O'Reilly you should be using & in xml. UTF-8 is quite a bit different. http://www.fileformat.info/info/unicode/char/0026/index.htm
根据 O'Reilly，您应该在 xml 中使用 & 。UTF-8 有点不同。http://www.fileformat.info/info/unicode/char/0026/index.htm
回答by Kyle Butt
No difference. Utf-8 doesn't matter because & is reserved anyway. So use &
没有不同。utf-8 无关紧要，因为 & 无论如何都是保留的。所以使用 &
