Web速查-索引

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定义

HTML 中的预留字符必须被替换为字符实体。一些在键盘上找不到的字符也可以使用字符实体来替换。

HTML 实体

在 HTML 中,某些字符是预留的。不能使用包含这些字符的文本。

在 HTML 中不能使用小于号(<)和大于号(>),这是因为浏览器会误认为它们是标签。

如果希望正确地显示预留字符,我们必须在 HTML 源代码中使用字符实体(character entities)。 字符实体类似这样:

&entity_name;
&#entity_number;

如需显示小于号,我们必须这样写:&lt、&#60、 &#060;

使用实体名而不是数字的好处是,名称易于记忆。不过坏处是,浏览器也许并不支持所有实体名称(对实体数字的支持却很好)。

HTML ISO-8859-1 参考手册

HTML 预留字符

HTML 和 XHTML 预留了一些字符。

比如,不能使用包含这些字符的文本,因为浏览器可能会误以为是 HTML 标签。

HTML 和 XHTML 中央处理器必须识别以下表格所列举的五种特殊字符:

字符 实体编号 实体名称 描述
" &#34; &quot; quotation
' &#39; &apos; apostrophe
& &#38; &amp; ampersand
< &#60; &lt; less-than
> &#62; &gt; greater-than

实体名称对大小写敏感!

ISO 8859-1 符号实体

字符 实体编号 实体名称 描述
&#160; &nbsp; non-breaking space
¡ &#161; &iexcl; inverted exclamation mark
¢ &#162; &cent; cent
£ &#163; &pound; pound
¤ &#164; &curren; currency
¥ &#165; &yen; yen
¦ &#166; &brvbar; broken vertical bar
§ &#167; &sect; section
¨ &#168; &uml; spacing diaeresis
© &#169; &copy; copyright
ª &#170; &ordf; feminine ordinal indicator
« &#171; &laquo; angle quotation mark (left)
¬ &#172; &not; negation
&#173; &shy; soft hyphen
® &#174; &reg; registered trademark
¯ &#175; &macr; spacing macron
° &#176; &deg; degree
± &#177; &plusmn; plus-or-minus
² &#178; &sup2; superscript 2
³ &#179; &sup3; superscript 3
´ &#180; &acute; spacing acute
µ &#181; &micro; micro
&#182; &para; paragraph
· &#183; &middot; middle dot
¸ &#184; &cedil; spacing cedilla
¹ &#185; &sup1; superscript 1
º &#186; &ordm; masculine ordinal indicato
» &#187; &raquo; angle quotation mark (righ
¼ &#188; &frac14; fraction 1/4
½ &#189; &frac12; fraction 1/2
¾ &#190; &frac34; fraction 3/4
¿ &#191; &iquest; inverted question mark
× &#215; &times; multiplication
÷ &#247; &divide; division

ISO 8859-1 字符实体

字符 实体编号 实体名称 描述
À &#192; &Agrave; capital a, grave accent
Á &#193; &Aacute; capital a, acute accent
 &#194; &Acirc; capital a, circumflex accent
à &#195; &Atilde; capital a, tilde
Ä &#196; &Auml; capital a, umlaut mark
Å &#197; &Aring; capital a, ring
Æ &#198; &AElig; capital ae
Ç &#199; &Ccedil; capital c, cedilla
È &#200; &Egrave; capital e, grave accent
É &#201; &Eacute; capital e, acute accent
Ê &#202; &Ecirc; capital e, circumflex accent
Ë &#203; &Euml; capital e, umlaut mark
Ì &#204; &Igrave; capital i, grave accent
Í &#205; &Iacute; capital i, acute accent
Î &#206; &Icirc; capital i, circumflex accent
Ï &#207; &Iuml; capital i, umlaut mark
Ð &#208; &ETH; capital eth, Icelandic
Ñ &#209; &Ntilde; capital n, tilde
Ò &#210; &Ograve; capital o, grave accent
Ó &#211; &Oacute; capital o, acute accent
Ô &#212; &Ocirc; capital o, circumflex acc
Õ &#213; &Otilde; capital o, tilde
Ö &#214; &Ouml; capital o, umlaut mark
Ø &#216; &Oslash; capital o, slash
Ù &#217; &Ugrave; capital u, grave accent
Ú &#218; &Uacute; capital u, acute accent
Û &#219; &Ucirc; capital u, circumflex accen
Ü &#220; &Uuml; capital u, umlaut mark
Ý &#221; &Yacute; capital y, acute accent
Þ &#222; &THORN; capital THORN, Icelandic
ß &#223; &szlig; small sharp s, German
à &#224; &agrave; small a, grave accent
á &#225; &aacute; small a, acute accent
â &#226; &acirc; small a, circumflex accent
ã &#227; &atilde; small a, tilde
ä &#228; &auml; small a, umlaut mark
å &#229; &aring; small a, ring
æ &#230; &aelig; small ae
ç &#231; &ccedil; small c, cedilla
è &#232; &egrave; small e, grave accent
é &#233; &eacute; small e, acute accent
ê &#234; &ecirc; small e, circumflex accent
ë &#235; &euml; small e, umlaut mark
ì &#236; &igrave; small i, grave accent
í &#237; &iacute; small i, acute accent
î &#238; &icirc; small i, circumflex accent
ï &#239; &iuml; small i, umlaut mark
ð &#240; &eth; small eth, Icelandic
ñ &#241; &ntilde; small n, tilde
ò &#242; &ograve; small o, grave accent
ó &#243; &oacute; small o, acute accent
ô &#244; &ocirc; small o, circumflex accent
õ &#245; &otilde; small o, tilde
ö &#246; &ouml; small o, umlaut mark
ø &#248; &oslash; small o, slash
ù &#249; &ugrave; small u, grave accent
ú &#250; &uacute; small u, acute accent
û &#251; &ucirc; small u, circumflex acc
ü &#252; &uuml; small u, umlaut mark
ý &#253; &yacute; small y, acute accent
þ &#254; &thorn; small thorn, Icelandic
ÿ &#255; &yuml; small y, umlaut mark

浏览器支持

表格中的数字表示支持该属性的第一个浏览器版本号

Safari Chrome FireFox IE
1.0 1.0 1.0 1.0