HTML 字符实体备忘清单 === 此备忘清单是 HTML 实体及其编号和名称的完整列表。还包括可以用 HTML 表示的 ASCII 字符的完整列表。 HTML 字符实体引用 ------ ### HTML 特殊字符 | HTML | Symbol | Numeric | 描述 | Hex | CSS (ISO) | JS (Octal) | |----------------|--------------|--------------|--------------------------|-----------------|-------------------|---------------------| | `"` | " | `"` | 引号 | u+0022 ISOnum | \\0022 | \42 | | `#` | # | `#` | 数字符号 | u+0023 ISOnum | \\0023 | \43 | | `$` | $ | `$` | 美元符号 | u+0024 ISOnum | \\0024 | \44 | | `%` | % | `%` | 百分号 | u+0025 ISOnum | \\0025 | \45 | | `&` | & | `&` | 和号 | u+0026 ISOnum | \\0026 | \46 | | `'` | ' | `'` | 撇号 | u+0027 ISOnum | \\0027 | \47 | | `(` | ( | `(` | 左括号 | u+0028 ISOnum | \\0028 | \50 | | `)` | ) | `)` | 右括号 | u+0029 ISOnum | \\0029 | \51 | | `*` | * | `*` | 星号 | u+002A ISOnum | \\002a | \52 | | `+` | + | `+` | 加号 | u+002B ISOnum | \\002b | \53 | | `,` | , | `,` | 逗号 | u+002C ISOnum | \\002c | \54 | | `−` | - | `-` | 连字符减号 | u+002D ISOnum | \\002d | \55 | | `.` | . | `.` | 句号 | u+002E ISOnum | \\002e | \56 | | `/` | / | `/` | 固相线 | u+002F ISOnum | \\002f | \57 | | `:` | : | `:` | 冒号 | u+003A ISOnum | \\003a | \72 | | `;` | ; | `;` | 分号 | u+003B ISOnum | \\003b | \73 | | `<` | < | `<` | 少于 | u+003C ISOnum | \\003c | \74 | | `=` | = | `=` | 等于 | u+003D ISOnum | \\003d | \75 | | `>` | > | `>` | 大于号 | u+003E ISOnum | \\003e | \76 | | `?` | ? | `?` | 问号 | u+003F ISOnum | \\003f | \77 | | `@` | @ | `@` | 在标志处 | u+0040 ISOnum | \\0040 | \100 | | `[` | [ | `[` | 左方括号 | u+005B ISOnum | \\005b | \133 | | `\` | \ | `\` | 反斜杠 | u+005C ISOnum | \\005c | \134 | | `]` | ] | `]` | 右方括号 | u+005D ISOnum | \\005d | \135 | | `^` | ^ | `^` | 抑扬顿挫 | u+005E ISOnum | \\005e | \136 | | `_` | _ | `_` | 低线 | u+005F ISOnum | \\005f | \137 | | ``` | ` | ``` | 重音 | u+0060 ISOnum | \\0060 | \u0060 | | `{` | { | `{` | 左大括号 | u+007b ISOnum | \\007b | \173 | | `|` | \| | `|` | 竖线 | u+007c ISOnum | \\007c | \174 | | `}` | } | `}` | 右大括号 | u+007d ISOnum | \\007d | \175 | | | ~ | `~` | 波浪号 | u+007e ISOnum | \\007e | \176 | ### HTML 拉丁语 | HTML | Symbol | Numeric | 描述 | Hex | CSS (ISO) | JS (Octal) | |----------------|----------|----------------|---------------------------------------|----------|-----------|---------------------| | ` ` | | ` ` | no-break space | %A0 | \\00a0 | \240 | | `¡` | ¡ | `¡` | inverted exclamation mark | %A1 | \\00a1 | \241 | | `¢` | ¢ | `¢` | cent sign | %A2 | \\00a2 | \242 | | `£` | £ | `£` | pound sterling sign | %A3 | \\00a3 | \243 | | `¤` | ¤ | `¤` | general currency sign | %A4 | \\00a4 | \244 | | `¥` | ¥ | `¥` | yen sign | %A5 | \\00a5 | \245 | | `₹` | ₹ | `₹` | Indian Rupee (INR) sign | U+20B9 | \\20B9 | \u20B9 | | `¦` | ¦ | `¦` | broken (vertical) bar | %A6 | \\00a6 | \246 | | `§` | § | `§` | section sign | %A7 | \\00a7 | \247 | | `¨` | ¨ | `¨` | umlaut (dieresis) | %A8 | \\00a8 | \250 | | `©` | © | `©` | copyright sign | %A9 | \\00a9 | \251 | | `ª` | ª | `ª` | ordinal indicator, feminine | %AA | \\00aa | \252 | | `«` | « | `«` | angle quotation mark, left | %AB | \\00ab | \253 | | `¬` | ¬ | `¬` | not sign | %AC | \\00ac | \254 | | `­` | ­ | `­` | soft hyphen | %AD | \\00ad | \255 | | `®` | ® | `®` | registered sign | %AE | \\00ae | \256 | | `¯` | ¯ | `¯` | macron | %AF | \\00af | \257 | | `°` | ° | `°` | degree sign | %B0 | \\00b0 | \260 | | `±` | ± | `±` | plus-or-minus sign | %B1 | \\00b1 | \261 | | `²` | ² | `²` | superscript two | %B2 | \\00b2 | \262 | | `³` | ³ | `³` | superscript three | %B3 | \\00b3 | \263 | | `´` | ´ | `´` | acute accent | %B4 | \\00b4 | \264 | | `µ` | µ | `µ` | micro sign | %B5 | \\00b5 | \265 | | `¶` | ¶ | `¶` | pilcrow (paragraph sign) | %B6 | \\00b6 | \266 | | `·` | · | `·` | middle dot | %B7 | \\00b7 | \267 | | `¸` | ¸ | `¸` | cedilla | %B8 | \\00b8 | \270 | | `¹` | ¹ | `¹` | superscript one | %B9 | \\00b9 | \271 | | `º` | º | `º` | ordinal indicator, masculine | %BA | \\00ba | \272 | | `»` | » | `»` | angle quotation mark, right | %BB | \\00bb | \273 | | `¼` | ¼ | `¼` | fraction one-quarter | %BC | \\00bc | \274 | | `½` | ½ | `½` | fraction one-half | %BD | \\00bd | \275 | | `¾` | ¾ | `¾` | fraction three-quarters | %BE | \\00be | \276 | | `¿` | ¿ | `¿` | inverted question mark | %BF | \\00bf | \277 | | `À` | À | `À` | capital A, grave accent | %C0 | \\00c0 | \300 | | `Á` | Á | `Á` | capital A, acute accent | %C1 | \\00c1 | \301 | | `Â` |  | ` ;` | capital A, circumflex accent | %C2 | \\00c2 | \302 | | `Ã` | à | `Ã` | capital A, tilde | %C3 | \\00c3 | \303 | | `Ä` | Ä | `Ä` | capital A, dieresis or umlaut mark | %C4 | \\00c4 | \304 | | `Å` | Å | `Å` | capital A, ring | %C5 | \\00c5 | \305 | | `Æ` | Æ | `Æ` | capital AE diphthong (ligature) | %C6 | \\00c6 | \306 | | `Ç` | Ç | `Ç` | capital C, cedilla | %C7 | \\00c7 | \307 | | `È` | È | `È` | capital E, grave accent | %C8 | \\00c8 | \310 | | `É` | É | `É` | capital E, acute accent | %C9 | \\00c9 | \311 | | `Ê` | Ê | `Ê` | capital E, circumflex accent | %CA | \\00ca | \312 | | `Ë` | Ë | `Ë` | capital E, dieresis or umlaut mark | %CB | \\00cb | \313 | | `Ì` | Ì | `Ì` | capital I, grave accent | %CC | \\00cc | \314 | | `Í` | Í | `Í` | capital I, acute accent | %CD | \\00cd | \315 | | `Î` | Î | `Î` | capital I, circumflex accent | %CE | \\00ce | \316 | | `Ï` | Ï | `Ï` | capital I, dieresis or umlaut mark | %CF | \\00cf | \317 | | `Ð` | Ð | `Ð` | capital Eth, Icelandic | %D0 | \\00d0 | \320 | | `Ñ` | Ñ | `Ñ` | capital N, tilde | %D1 | \\00d1 | \321 | | `Ò` | Ò | `Ò` | capital O, grave accent | %D2 | \\00d2 | \322 | | `Ó` | Ó | `Ó` | capital O, acute accent | %D3 | \\00d3 | \323 | | `Ô` | Ô | `Ô` | capital O, circumflex accent | %D4 | \\00d4 | \324 | | `Õ` | Õ | `Õ` | capital O, tilde | %D5 | \\00d5 | \325 | | `Ö` | Ö | `Ö` | capital O, dieresis or umlaut mark | %D6 | \\00d6 | \326 | | `×` | × | `×` | multiply sign | %D7 | \\00d7 | \327 | | `Ø` | Ø | `Ø` | capital O, slash | %D8 | \\00d8 | \330 | | `Ù` | Ù | `Ù` | capital U, grave accent | %D9 | \\00d9 | \331 | | `Ú` | Ú | `Ú` | capital U, acute accent | %DA | \\00da | \332 | | `Û` | Û | `Û` | capital U, circumflex accent | %DB | \\00db | \333 | | `Ü` | Ü | `Ü` | capital U, dieresis or umlaut mark | %DC | \\00dc | \334 | | `Ý` | Ý | `Ý` | capital Y, acute accent | %DD | \\00dd | \335 | | `Þ` | Þ | `Þ` | capital THORN, Icelandic | %DE | \\00de | \336 | | `ß` | ß | `ß` | small sharp s, German (sz ligature) | %DF | \\00df | \337 | | `à` | à | `à` | small a, grave accent | %E0 | \\00e0 | \340 | | `á` | á | `á` | small a, acute accent | %E1 | \\00e1 | \341 | | `â` | â | `â` | small a, circumflex accent | %E2 | \\00e2 | \342 | | `ã` | ã | `ã` | small a, tilde | %E3 | \\00e3 | \343 | | `ä` | ä | `ä` | small a, dieresis or umlaut mark | %E4 | \\00e4 | \344 | | `å` | å | `å` | small a, ring | %E5 | \\00e5 | \345 | | `æ` | æ | `æ` | small ae diphthong (ligature) | %E6 | \\00e6 | \346 | | `ç` | ç | `ç` | small c, cedilla | %E7 | \\00e7 | \347 | | `è` | è | `è` | small e, grave accent | %E8 | \\00e8 | \350 | | `é` | é | `é` | small e, acute accent | %E9 | \\00e9 | \351 | | `ê` | ê | `ê` | small e, circumflex accent | %EA | \\00ea | \352 | | `ë` | ë | `ë` | small e, dieresis or umlaut mark | %EB | \\00eb | \353 | | `ì` | ì | `ì` | small i, grave accent | %EC | \\00ec | \354 | | `í` | í | `í` | small i, acute accent | %ED | \\00ed | \355 | | `î` | î | `î` | small i, circumflex accent | %EE | \\00ee | \356 | | `ï` | ï | `ï` | small i, dieresis or umlaut mark | %EF | \\00ef | \357 | | `ð` | ð | `ð` | small eth, Icelandic | %F0 | \\00f0 | \360 | | `ñ` | ñ | `ñ` | small n, tilde | %F1 | \\00f1 | \361 | | `ò` | ò | `ò` | small o, grave accent | %F2 | \\00f2 | \362 | | `ó` | ó | `ó` | small o, acute accent | %F3 | \\00f3 | \363 | | `ô` | ô | `ô` | small o, circumflex accent | %F4 | \\00f4 | \364 | | `õ` | õ | `õ` | small o, tilde | %F5 | \\00f5 | \365 | | `ö` | ö | `ö` | small o, dieresis or umlaut mark | %F6 | \\00f6 | \366 | | `÷` | ÷ | `÷` | divide sign | %F7 | \\00f7 | \367 | | `ø` | ø | `ø` | small o, slash | %F8 | \\00f8 | \370 | | `ù` | ù | `ù` | small u, grave accent | %F9 | \\00f9 | \371 | | `ú` | ú | `ú` | small u, acute accent | %FA | \\00fa | \372 | | `û` | û | `û` | small u, circumflex accent | %FB | \\00fb | \373 | | `ü` | ü | `ü` | small u, dieresis or umlaut mark | %FC | \\00fc | \374 | | `ý` | ý | `ý` | small y, acute accent | %FD | \\00fd | \375 | | `þ` | þ | `þ` | small thorn, Icelandic | %FE | \\00fe | \376 | | `ÿ` | ÿ | `ÿ` | small y, dieresis or umlaut mark | %FF | \\00ff | \377 | ### HTML 拉丁文扩展 | HTML | Symbol | Numeric | 描述 | Hex | CSS (ISO) | JS (Octal) | |----------------|--------|--------------|-----------------------------------------|------------------|-----------|---------------------| | `Œ` | Œ | `Œ` | latin capital ligature oe | u+0152 ISOlat2 | \\0152 | \u0152 | | `œ` | œ | `œ` | latin small ligature oe | u+0153 ISOlat2 | \\0153 | \u0153 | | `Š` | Š | `Š` | latin capital letter s with caron | u+0160 ISOlat2 | \\0160 | \u0160 | | `š` | š | `š` | latin small letter s with caron | u+0161 ISOlat2 | \\0161 | \u0161 | | `Ÿ` | Ÿ | `Ÿ` | latin capital letter y with diaeresis | u+0178 ISOlat2 | \\0178 | \u0178 | | `ƒ` | ƒ | `ƒ` | latin small f with hook | u+0192 ISOtech | \\0192 | \u0192 | ### HTML 间距修饰符字母 | HTML | Symbol | Numeric | Description | Hex | CSS (ISO) | JS (Octal) | |---------------|--------|-------------------------------------|-----------------|---------|---------------------|------------| | `ˆ` | ˆ | | modifier letter circumflex accent | u+02C6 ISOpub | \\02c6 | \u02c6 | | `˜` | ˜ | | small tilde | u+02DC ISOdia | \\02dc | \u02dc | ### HTML 希腊语 | HTML | Symbol | Numeric | 描述 | Hex | CSS (ISO) | JS (Octal) | |------------------|--------|--------------|-----------------------------------|------------------|-----------|---------------------| | `Α` | Α | `Α` | greek capital letter alpha | u+0391 | \\0391 | \u0391 | | `Β` | Β | `Β` | greek capital letter beta | u+0392 | \\0392 | \u0392 | | `Γ` | Γ | `Γ` | greek capital letter gamma | u+0393 ISOgrk3 | \\0393 | \u0395 | | `Δ` | Δ | `Δ` | greek capital letter delta | u+0394 ISOgrk3 | \\0394 | \u0394 | | `Ε` | Ε | `Ε` | greek capital letter epsilon | u+0395 | \\0395 | \u0395 | | `Ζ` | Ζ | `Ζ` | greek capital letter zeta | u+0396 | \\0396 | \u0396 | | `Η` | Η | `Η` | greek capital letter eta | u+0397 | \\0397 | \u0397 | | `Θ` | Θ | `Θ` | greek capital letter theta | u+0398 ISOgrk3 | \\0398 | \u0398 | | `Ι` | Ι | `Ι` | greek capital letter iota | u+0399 | \\0399 | \u0399 | | `Κ` | Κ | `Κ` | greek capital letter kappa | u+039A | \\039a | \u039a | | `Λ` | Λ | `Λ` | greek capital letter lambda | u+039B ISOgrk3 | \\039b | \u039b | | `Μ` | Μ | `Μ` | greek capital letter mu | u+039C | \\039c | \u039c | | `Ν` | Ν | `Ν` | greek capital letter nu | u+039D | \\039d | \u039D | | `Ξ` | Ξ | `Ξ` | greek capital letter xi | u+039E ISOgrk3 | \\039e | \u039e | | `Ο` | Ο | `Ο` | greek capital letter omicron | u+039F | \\039f | \u039f | | `Π` | Π | `Π` | greek capital letter pi | u+03A0 ISOgrk3 | \\03a0 | \u03a0 | | `Ρ` | Ρ | `Ρ` | greek capital letter rho | u+03A1 | \\03a1 | \u03a1 | | `Σ` | Σ | `Σ` | greek capital letter sigma | u+03A3 ISOgrk3 | \\03a3 | \u03A3 | | `Τ` | Τ | `Τ` | greek capital letter tau | u+03A4 | \\03a4 | \u03A4 | | `Υ` | Υ | `Υ` | greek capital letter upsilon | u+03A5 ISOgrk3 | \\03a5 | \u03A5 | | `Φ` | Φ | `Φ` | greek capital letter phi | u+03A6 ISOgrk3 | \\03a6 | \u03A6 | | `Χ` | Χ | `Χ` | greek capital letter chi | u+03A7 | \\03a7 | \u03A7 | | `Ψ` | Ψ | `Ψ` | greek capital letter psi | u+03A8 ISOgrk3 | \\03a8 | \u03A8 | | `Ω` | Ω | `Ω` | greek capital letter omega | u+03A9 ISOgrk3 | \\03a9 | \u03A9 | | `α` | α | `α` | greek small letter alpha | u+03B1 ISOgrk3 | \\03b1 | \u03b1 | | `β` | β | `β` | greek small letter beta | u+03B2 ISOgrk3 | \\03b2 | \u03b2 | | `γ` | γ | `γ` | greek small letter gamma | u+03B3 ISOgrk3 | \\03b3 | \u03b3 | | `δ` | δ | `δ` | greek small letter delta | u+03B4 ISOgrk3 | \\03b4 | \u03b4 | | `ε` | ε | `ε` | greek small letter epsilon | u+03B5 ISOgrk3 | \\03b5 | \u03b5 | | `ζ` | ζ | `ζ` | greek small letter zeta | u+03B6 ISOgrk3 | \\03b6 | \u03b6 | | `η` | η | `η` | greek small letter eta | u+03B7 ISOgrk3 | \\03b7 | \u03b7 | | `θ` | θ | `θ` | greek small letter theta | u+03B8 ISOgrk3 | \\03b8 | \u03b8 | | `ι` | ι | `ι` | greek small letter iota | u+03B9 ISOgrk3 | \\03b9 | \u03b9 | | `κ` | κ | `κ` | greek small letter kappa | u+03BA ISOgrk3 | \\03ba | \u03ba | | `λ` | λ | `λ` | greek small letter lambda | u+03BB ISOgrk3 | \\03bb | \u03bb | | `μ` | μ | `μ` | greek small letter mu | u+03BC ISOgrk3 | \\03bc | \u03bc | | `ν` | ν | `ν` | greek small letter nu | u+03BD ISOgrk3 | \\03bd | \u03bd | | `ξ` | ξ | `ξ` | greek small letter xi | u+03BE ISOgrk3 | \\03be | \u03be | | `ο` | ο | `ο` | greek small letter omicron | u+03BF NEW | \\03bf | \u03bf | | `π` | π | `π` | greek small letter pi | u+03C0 ISOgrk3 | \\03c0 | \u03c0 | | `ρ` | ρ | `ρ` | greek small letter rho | u+03C1 ISOgrk3 | \\03c1 | \u03c1 | | `ς` | ς | `ς` | greek small letter final sigma | u+03C2 ISOgrk3 | \\03C2 | \u03c2 | | `σ` | σ | `σ` | greek small letter sigma | u+03C3 ISOgrk3 | \\03C3 | \u03c3 | | `τ` | τ | `τ` | greek small letter tau | u+03C4 ISOgrk3 | \\03C4 | \u03c4 | | `υ` | υ | `υ` | greek small letter upsilon | u+03C5 ISOgrk3 | \\03C5 | \u03c5 | | `φ` | φ | `φ` | greek small letter phi | u+03C6 ISOgrk3 | \\03C6 | \03c6 | | `χ` | χ | `χ` | greek small letter chi | u+03C7 ISOgrk3 | \\03C7 | \u03c7 | | `ψ` | ψ | `ψ` | greek small letter psi | u+03C8 ISOgrk3 | \\03C8 | \u03c8 | | `ω` | ω | `ω` | greek small letter omega | u+03C9 ISOgrk3 | \\03C9 | \u03c9 | | `ϑ` | ϑ | `ϑ` | greek small letter theta symbol | u+03D1 NEW | \\03D1 | \u03D1 | | `ϒ` | ϒ | `ϒ` | greek upsilon with hook symbol | u+03D2 NEW | \\03D2 | \u03D2 | | `ϖ` | ϖ | `ϖ` | greek pi symbol | u+03D6 ISOgrk3 | \\03D6 | \u03D6 | ### HTML Punctuation | HTML | Symbol | Numeric | 描述 | Hex | CSS (ISO) | JS (Octal) | |----------------|--------|---------------|-------------------------------------------|-----------------------|-----------|---------------------| | ` ` |   | ` ` | en space | u+2002 ISOpub | \\2002 | \u2002 | | ` ` |   | ` ` | em space | u+2003 ISOpub | \\2003 | \u2003 | | ` ` |   | ` ` | thin space | u+2009 ISOpub | \\2009 | \u2009 | | `‌` | ‌ | `‌` | zero width non-joiner | u+200C NEW RFC 2070 | \\200C | \u200C | | `‍` | ‍ | `‍` | zero width joiner | u+200D NEW RFC 2070 | \\200D | \u200d | | `‎` | ‎ | `‎` | left-to-right mark | u+200E NEW RFC 2070 | \\200E | \u200e | | `‏` | ‏ | `‏` | right-to-left mark | u+200F NEW RFC 2070 | \\200F | \u200f | | `–` | – | `–` | en dash | u+2013 ISOpub | \\2013 | \u2013 | | `—` | — | `—` | em dash | u+2014 ISOpub | \\2014 | \u2014 | | `‘` | ‘ | `‘` | left single quotation mark | u+2018 ISOnum | \\2018 | \u2018 | | `’` | ’ | `’` | right single quotation mark | u+2019 ISOnum | \\2019 | \u2019 | | `‚` | ‚ | `‚` | single low-9 quotation mark | u+201A NEW | \\201A | \u201a | | `“` | “ | `“` | left double quotation mark | u+201C ISOnum | \\201C | \u201c | | `”` | ” | `”` | right double quotation mark | u+201D ISOnum | \\201D | \u201d | | `„` | „ | `„` | double low-9 quotation mark | u+201E NEW | \\201E | \u201e | | `†` | † | `†` | dagger | u+2020 ISOpub | \\2020 | \u2020 | | `‡` | ‡ | `‡` | double dagger | u+2021 ISOpub | \\2021 | \u2021 | | `‰` | ‰ | `‰` | per mille sign | u+2030 ISOtech | \\2030 | \u2030 | | `‹` | ‹ | `‹` | single left-pointing angle quotation mark | u+2039 ISO proposed | \\2039 | \u2039 | | `›` | › | `›` | single right-pointing angle quotation mark | u+203A ISO proposed | \\203A | \u203a | | `•` | • | `•` | bullet, aka. black small circle | u+2022 ISOpub | \\2022 | \u2219 | | `…` | … | `…` | horizontal ellipsis, aka three dot leader | u+2026 ISOpub | \\2026 | \u2026 | | `′` | ′ | `′` | prime, aka minutes, aka feet | u+2032 ISOtech | \\2032 | \u2032 | | `″` | ″ | `″` | double prime, aka seconds, aka inches | u+2033 ISOtech | \\2033 | \u2033 | | `‾` | ‾ | `‾` | overline, aka spacing overscore | u+203E NEW | \\203E | \u203e | | `⁄` | ⁄ | `⁄` | fraction slash | u+2044 NEW | \\2044 | \u8260 | ### HTML Letter-like Symbols | HTML | Symbol | Numeric | 描述 | Hex | CSS (ISO) | JS (Octal) | |-----------------|--------|---------------|------------------------------------------------------------|------------------|-----------|---------------------| | `℘` | ℘ | `℘` | script capital P, aka power set, aka Weierstrass p | u+2118 ISOamso | \\2118 | \u2118 | | `ℑ` | ℑ | `ℑ` | blackletter capital I, aka imaginary part | u+2111 ISOamso | \\2111 | \u2111 | | `ℜ` | ℜ | `ℜ` | blackletter capital R, aka real part symbol | u+211C ISOamso | \\211C | \u211c | | `™` | ™ | `™` | trade mark sign | u+2122 ISOnum | \\2122 | \u2122 | | `ℵ` | ℵ | `ℵ` | alef symbol | u+2135 NEW | \\2135 | \u | ### HTML Arrows | HTML | Symbol | Numeric | 描述 | Hex | CSS (ISO) | JS (Octal) | |---------------|---------------|---------------------------------|-----------------------------------------------------------------|------------------|---------------------|---------------------| | `←` | ← | `←` | leftwards arrow | u+2190 ISOnum | \\2190 | \u2190 | | `↑` | ↑ | `↑` | upwards arrow | u+2191 ISOnum | \\2191 | \u2191 | | `→` | → | `→` | rightwards arrow | u+2192 ISOnum | \\2192 | \u2192 | | `↓` | ↓ | `↓` | downwards arrow | u+2193 ISOnum | \\2193 | \u2193 | | `↔` | ↔ | `↔` | left right arrow | u+2194 ISOamsa | \\2194 | \u2194 | | `↵` | ↵ | `↵` | downwards arrow with corner leftwards, aka carriage return | u+21B5 NEW | \\21B5 | \u21b5 | | `⇐` | ⇐ | `⇐` | leftwards double arrow can be used for ‘is implied by’ | u+21D0 ISOtech | \\21D0 | \u21d0 | | `⇑` | ⇑ | `⇑` | upwards double arrow | u+21D1 ISOamsa | \\21D1 | \u21d1 | | `⇒` | ⇒ | `⇒` | rightwards double arrow | u+21D2 ISOtech | \\21D2 | \u21d2 | | `⇓` | ⇓ | `⇓` | downwards double arrow | u+21D3 ISOamsa | \\21D3 | \ud1d3 | | `⇔` | ⇔ | `⇔` | left right double arrow | u+21D4 ISOamsa | \\21D4 | \u21d4 | | | ◄ | `◄` | black left pointing triangle | U+25C0 | \\25C0 | \u25c0 | | | ► | `►` | black right pointing triangle | u+25B6 | \\25b6 | \u25b6 | | | ▲ | `▲` | black up pointing triangle | u+25B2 | \\25b2 | \25b2 | | | ▼ | `▼` | black down pointing triangle | u+25BC | \\25bc | \25bc | ### HTML 数学运算符 | HTML | Symbol | Numeric | 描述 | Hex | CSS (ISO) | JS (Octal) | |----------------|--------|---------------|-----------------------------------------------|------------------|-----------|---------------------| | `∀` | ∀ | `∀` | for all | u+2200 ISOtech | \\2200 | \u2200 | | `∂` | ∂ | `∂` | partial differential | u+2202 ISOtech | \\2202 | \u2202 | | `∃` | ∃ | `∃` | there exists | u+2203 ISOtech | \\2203 | \u2203 | | `∅` | ∅ | `∅` | empty set, aka null set, aka diameter | u+2205 ISOamso | \\2205 | \u2205 | | `∇` | ∇ | `∇` | nabla, aka bakad difference | u+2207 ISOtech | \\2207 | \u2207 | | `∈` | ∈ | `∈` | element of | u+2208 ISOtech | \\2208 | \u2208 | | `∉` | ∉ | `∉` | not an element of | u+2209 ISOtech | \\2209 | \u2209 | | `∋` | ∋ | `∋` | contains as member | u+220B ISOtech | \\220B | \u220b | | `∏` | ∏ | `∏` | n-ary product, aka product sign | u+220F ISOamsb | \\220F | \u03a0 | | `∑` | ∑ | `∑` | n-ary sumation | u+2211 ISOamsb | \\2211 | \u03a3 | | `−` | − | `−` | minus sign | u+2212 ISOtech | \\2212 | \u2212 | | `∗` | ∗ | `∗` | asterisk operator | u+2217 ISOtech | \\2217 | \u2217 | | `√` | √ | `√` | square root, aka radical sign | u+221A ISOtech | \\221A | \u221a | | `∝` | ∝ | `∝` | proportional to | u+221D ISOtech | \\221D | \u221d | | `∞` | ∞ | `∞` | infinity | u+221E ISOtech | \\221E | \u221e | | `∠` | ∠ | `∠` | angle | u+2220 ISOamso | \\2220 | \u2220 | | `∧` | ⊥ | `⊥` | logical and, aka wedge | u+2227 ISOtech | \\2227 | \u2227 | | `∨` | ⊦ | `⊦` | logical or, aka vee | u+2228 ISOtech | \\2228 | \u2228 | | `∩` | ∩ | `∩` | intersection, aka cap | u+2229 ISOtech | \\2229 | \u2229 | | `∪` | ∪ | `∪` | union, aka cup | u+222A ISOtech | \\222A | \u222a | | `∫` | ∫ | `∫` | integral | u+222B ISOtech | \\222B | \u222b | | `∴` | ∴ | `∴` | therefore | u+2234 ISOtech | \\2234 | \u2234 | | `∼` | ∼ | `∼` | tilde | u+223C ISOtech | \\223C | \u223c | | `≅` | ≅ | `≅` | approximately equal to | u+2245 ISOtech | \\2245 | \u2245 | | `≈` | ≈ | `≈` | almost equal to, aka asymptotic to | u+2248 ISOamsr | \\2248 | \u2248 | | `≠` | ≠ | `≠` | not equal to | u+2260 ISOtech | \\2260 | \u2260 | | `≡` | ≡ | `≡` | identical to | u+2261 ISOtech | \\2261 | \u2261 | | `≤` | ≤ | `≤` | less-than or equal to | u+2264 ISOtech | \\2264 | \u2264 | | `≥` | ≥ | `≥` | greater-than or equal to | u+2265 ISOtech | \\2265 | \u2265 | | `⊂` | ⊂ | `⊂` | subset of | u+2282 ISOtech | \\2282 | \u2282 | | `⊃` | ⊃ | `⊃` | superset of | u+2283 ISOtech | \\2283 | \u2283 | | `⊄` | ⊄ | `⊄` | not a subset of | u+2284 ISOamsn | \\2284 | \u2284 | | `⊆` | ⊆ | `⊆` | subset of or equal to | u+2286 ISOtech | \\2286 | \u2286 | | `⊇` | ⊇ | `⊇` | superset of or equal to | u+2287 ISOtech | \\2287 | \u2287 | | `⊕` | ⊕ | `⊕` | circled plus, aka direct sum | u+2295 ISOamsb | \\2295 | \u2295 | | `⊗` | ⊗ | `⊗` | circled times, aka vector product | u+2297 ISOamsb | \\2297 | \u2297 | | `⊥` | ⊥ | `⊥` | up tack | u+22A5 ISOtech | \\22A5 | \u22a5 | | `⋅` | ⋅ | `⋅` | dot operator | u+22C5 ISOamsb | \\22C5 | \u22c5 | ### HTML 技术 | HTML | Symbol | Numeric | 描述 | Hex | CSS (ISO) | JS (Octal) | |----------------|--------|---------------|------------------------------------|------------------|-----------|---------------------| | `⌈` | ⌈ | `⌈` | left ceiling, aka apl upstile | u+2308 ISOamsc | \\2308 | \u2308 | | `⌉` | ⌉ | `⌉` | right ceiling | u+2309 ISOamsc | \\2309 | \u2309 | | `⌊` | ⌊ | `⌊` | left floor, aka apl downstile | u+230A ISOamsc | \\230A | \u230a | | `⌋` | ⌋ | `⌋` | right floor | u+230B ISOamsc | \\230B | \u230b | | `⟨` | 〈 | `〈` | left-pointing angle bracket | u+2329 ISOtech | \\2329 | \u2329 | | `⟩` | 〉 | `〉` | right-pointing angle bracket | u+232A ISOtech | \\232A | \u232a | ### HTML 杂项 | HTML | Symbol | Numeric | 描述 | Hex | CSS (ISO) | JS (Octal) | |----------------|--------|---------------|--------------------------------------|-----------------|-----------|---------------------| | `◊` | ◊ | `◊` | 菱形 | u+25CA ISOpub | \\25CA | \u25ca | | `♠` | ♠ | `♠` | 黑桃 | u+2660 ISOpub | \\2660 | \u2660 | | `♣` | ♣ | `♣` | 梅花 | u+2663 ISOpub | \\2663 | \u2663 | | `♥` | ♥ | `♥` | 黑心套装，又名情人节 | u+2665 ISOpub | \\2665 | \u2665 | | `♦` | ♦ | `♦` | 方块 | u+2666 ISOpub | \\2666 | \u2666 | 另见 --- - [HTML 字符集实体](https://jaywcjlove.github.io/html-tutorial/reference/charactersets_entities.html)