HTML/XML转义字符对照表

HTML中<，>，&等有特殊含义（<，>，用于标签，&用于转义）不能直接使用。这些符号是不显示在我们网页里,需要使用转义字符呈现出来。
转义字符串（Escape Sequence），即字符实体（Character Entity）分成三部分：
第一部分是一个&符号，英文叫ampersand；
第二部分是实体（Entity）名字或者是#加上实体（Entity）编号；
第三部分是一个分号。
以下是HTML/XML转义字符对照表：

特殊字符转义表

字符 十进制 转义字符
" &#34; &quot;
& &#38; &amp;
< &#60; &lt;
> &#62; &gt;
不断开空格(non-breaking space) &#160; &nbsp;

最常用的转义字符列表

显示 说明 实体名称 十进制编号
半方大的空白 &ensp; &#8194;
全方大的空白 &emsp; &#8195;
不断行的空白格 &nbsp; &#160;
< 小于 &lt; &#60;
> 大于 &gt; &#62;
& &符号 &amp; &#38;
" 双引号 &quot; &#34;
© 版权 &copy; &#169;
® 已注册商标 &reg; &#174;
™ 商标（美国） &trade; &#8482;
× 乘号 &times; &#215;
÷ 除号 &divide; &#247;

ISO 8859-1 (Latin-1)字符集

显示 名称 十进制 显示 名称 十进制 显示 名称 十进制 显示 名称 十进制 显示 名称 十进制
  &nbsp; &#160; ¡ &iexcl; &#161; ¢ &cent; &#162; £ &pound; &#163; ¤ &curren; &#164;
¥ &yen; &#165; ¦ &brvbar; &#166; § &sect; &#167; ¨ &uml; &#168; © &copy; &#169;
ª &ordf; &#170; « &laquo; &#171; ¬ &not; &#172; &shy; &#173; ® &reg; &#174;
¯ &macr; &#175; ° &deg; &#176; ± &plusmn; &#177; ² &sup2; &#178; ³ &sup3; &#179;
´ &acute; &#180; µ &micro; &#181; &para; &#182; · &middot; &#183; ¸ &cedil; &#184;
¹ &sup1; &#185; º &ordm; &#186; » &raquo; &#187; ¼ &frac14; &#188; ½ &frac12; &#189;
¾ &frac34; &#190; ¿ &iquest; &#191; À &Agrave; &#192; Á &Aacute; &#193; Â &Acirc; &#194;
à &Atilde; &#195; Ä &Auml; &#196; Å &Aring; &#197; Æ &AElig; &#198; Ç &Ccedil; &#199;
È &Egrave; &#200; É &Eacute; &#201; Ê &Ecirc; &#202; Ë &Euml; &#203; Ì &Igrave; &#204;
Í &Iacute; &#205; Î &Icirc; &#206; Ï &Iuml; &#207; Ð &ETH; &#208; Ñ &Ntilde; &#209;
Ò &Ograve; &#210; Ó &Oacute; &#211; Ô &Ocirc; &#212; Õ &Otilde; &#213; Ö &Ouml; &#214;
× &times; &#215; Ø &Oslash; &#216; Ù &Ugrave; &#217; Ú &Uacute; &#218; Û &Ucirc; &#219;
Ü &Uuml; &#220; Ý &Yacute; &#221; Þ &THORN; &#222; ß &szlig; &#223; à &agrave; &#224;
á &aacute; &#225; â &acirc; &#226; ã &atilde; &#227; ä &auml; &#228; å &aring; &#229;
æ &aelig; &#230; ç &ccedil; &#231; è &egrave; &#232; é &eacute; &#233; ê &ecirc; &#234;
ë &euml; &#235; ì &igrave; &#236; í &iacute; &#237; î &icirc; &#238; ï &iuml; &#239;
ð &eth; &#240; ñ &ntilde; &#241; ò &ograve; &#242; ó &oacute; &#243; ô &ocirc; &#244;
õ &otilde; &#245; ö &ouml; &#246; ÷ &divide; &#247; ø &oslash; &#248; ù &ugrave; &#249;
ú &uacute; &#250; û &ucirc; &#251; ü &uuml; &#252; ý &yacute; &#253; þ &thorn; &#254;
ÿ &yuml; &#255;

符号、数学符号和希腊字母 symbols, mathematical symbols, and Greek letters

显示 名称 编号 显示 名称 编号 显示 名称 编号 显示 名称 编号 显示 名称 编号
ƒ &fnof; &#402; Α &Alpha; &#913; Β &Beta; &#914; Γ &Gamma; &#915; Δ &Delta; &#916;
Ε &Epsilon; &#917; Ζ &Zeta; &#918; Η &Eta; &#919; Θ &Theta; &#920; Ι &Iota; &#921;
Κ &Kappa; &#922; Λ &Lambda; &#923; Μ &Mu; &#924; Ν &Nu; &#925; Ξ &Xi; &#926;
Ο &Omicron; &#927; Π &Pi; &#928; Ρ &Rho; &#929; Σ &Sigma; &#931; Τ &Tau; &#932;
Υ &Upsilon; &#933; Φ &Phi; &#934; Χ &Chi; &#935; Ψ &Psi; &#936; Ω &Omega; &#937;
α &alpha; &#945; β &beta; &#946; γ &gamma; &#947; δ &delta; &#948; ε &epsilon; &#949;
ζ &zeta; &#950; η &eta; &#951; θ &theta; &#952; ι &iota; &#953; κ &kappa; &#954;
λ &lambda; &#955; μ &mu; &#956; ν &nu; &#957; ξ &xi; &#958; ο &omicron; &#959;
π &pi; &#960; ρ &rho; &#961; ς &sigmaf; &#962; σ &sigma; &#963; τ &tau; &#964;
υ &upsilon; &#965; φ &phi; &#966; χ &chi; &#967; ψ &psi; &#968; ω &omega; &#969;
? &thetasym; &#977; ? &upsih; &#978; ? &piv; &#982; • &bull; &#8226; … &hellip; &#8230;
′ &prime; &#8242; ″ &Prime; &#8243; ‾ &oline; &#8254; ⁄ &frasl; &#8260; ℘ &weierp; &#8472;
ℑ &image; &#8465; ℜ &real; &#8476; ™ &trade; &#8482; ℵ &alefsym; &#8501; ← &larr; &#8592;
↑ &uarr; &#8593; → &rarr; &#8594; ↓ &darr; &#8595; ↔ &harr; &#8596; ↵ &crarr; &#8629;
⇐ &lArr; &#8656; ⇑ &uArr; &#8657; ⇒ &rArr; &#8658; ⇓ &dArr; &#8659; ⇔ &hArr; &#8660;
∀ &forall; &#8704; ∂ &part; &#8706; ∃ &exist; &#8707; ∅ &empty; &#8709; ∇ &nabla; &#8711;
∈ &isin; &#8712; ∉ &notin; &#8713; ∋ &ni; &#8715; ∏ &prod; &#8719; ∑ &sum; &#8721;
− &minus; &#8722; ∗ &lowast; &#8727; √ &radic; &#8730; ∝ &prop; &#8733; ∞ &infin; &#8734;
∠ &ang; &#8736; ∧ &and; &#8743; ∨ &or; &#8744; ∩ &cap; &#8745; ∪ &cup; &#8746;
∫ &int; &#8747; ∴ &there4; &#8756; ∼ &sim; &#8764; ∝ &cong; &#8773; ≈ &asymp; &#8776;
≠ &ne; &#8800; ≡ &equiv; &#8801; ≤ &le; &#8804; ≥ &ge; &#8805; ⊂ &sub; &#8834;
⊃ &sup; &#8835; ⊄ &nsub; &#8836; ⊆ &sube; &#8838; ⊇ &supe; &#8839; ⊕ &oplus; &#8853;
⊗ &otimes; &#8855; ⊥ &perp; &#8869; ⋅ &sdot; &#8901; ? &lceil; &#8968; ? &rceil; &#8969;
? &lfloor; &#8970; ? &rfloor; &#8971; ? &lang; &#9001; ? &rang; &#9002; ◊ &loz; &#9674;
♠ &spades; &#9824; ♣ &clubs; &#9827; ♥ &hearts; &#9829; ♦ &diams; &#9830;

重要的国际标记 markup-significant and internationalization characters

显示 名称 编号 显示 名称 编号 显示 名称 编号 显示 名称 编号 显示 名称 编号
" &quot; &#34; & &amp; &#38; < &lt; &#60; > &gt; &#62; Π&OElig; &#338;
œ &oelig; &#339; Š &Scaron; &#352; š &scaron; &#353; Ÿ &Yuml; &#376; ˆ &circ; &#710;
˜ &tilde; &#732;   &ensp; &#8194;   &emsp; &#8195;   &thinsp; &#8201; ‌ &zwnj; &#8204;
‍‍ &zwj; &#8205; ‎‎ &lrm; &#8206; ‏‏ &rlm; &#8207; – &ndash; &#8211; — &mdash; &#8212;
‘ &lsquo; &#8216; ’ &rsquo; &#8217; ‚ &sbquo; &#8218; “ &ldquo; &#8220; ” &rdquo; &#8221;
„ &bdquo; &#8222; † &dagger; &#8224; ‡ &Dagger; &#8225; ‰ &permil; &#8240; ‹ &lsaquo; &#8249;
› &rsaquo; &#8250; € &euro; &#8364;

什么是转义字符?
转义字符（Escape character），所有的ASCII码都可以用“\”加数字（一般是8进制数字）来表示。 而C中定义了一些字母前加"\"来表示常见的那些不能显示的ASCII字符， 如\0,\t,\n等，就称为转义字符，因为后面的字符，都不是它本来的ASCII字符意思了。
简单来说就是在一些字符前加“\”使它具有其他意义
PS：html转义，可使用 https://www.lzltool.com/Escape/HtmlEscape
XML转义，可使用 https://www.lzltool.com/XmlEscape
转义的作用
转义字符是一种在字符或字符串里用来表示一些无法通过键盘输入或直接表示的控制字符的使用方式。
常见于程序设计语言的字符常量或字符串中，使用时需要在字符或字符串前加上“”（反斜杠）进行转义。