html和javascript中常用的数学及特殊符号标记

 

chr	HexCode	Numeric	HTML entity	escape(chr)	encodeURI(chr)	Description
"	\x22	"	"	%22	%22	quotation mark
&	\x26	&	&	%26	&	ampersand
<	\x3C	&#60;	&lt;	%3C	%3C	less-than sign
>	\x3E	&#62;	&gt;	%3E	%3E	greater-than sign
	\xA0	&#160;	&nbsp;	%A0	%C2%A0	non-breaking space
¡	\xA1	&#161;	&iexcl;	%A1	%C2%A1	inverted exclamation mark
¢	\xA2	&#162;	&cent;	%A2	%C2%A2	cent sign
£	\xA3	&#163;	&pound;	%A3	%C2%A3	pound sign
¤	\xA4	&#164;	&curren;	%A4	%C2%A4	currency sign
¥	\xA5	&#165;	&yen;	%A5	%C2%A5	yen sign = yuan sign
¦	\xA6	&#166;	&brvbar;	%A6	%C2%A6	broken vertical bar
§	\xA7	&#167;	&sect;	%A7	%C2%A7	section sign
¨	\xA8	&#168;	&uml;	%A8	%C2%A8	diaeresis = spacing diaeresis
©	\xA9	&#169;	&copy;	%A9	%C2%A9	copyright sign
ª	\xAA	&#170;	&ordf;	%AA	%C2%AA	feminine ordinal indicator
«	\xAB	&#171;	&laquo;	%AB	%C2%AB	left-pointing double angle quotation mark = left pointing guillemet
¬	\xAC	&#172;	&not;	%AC	%C2%AC	not sign
	\xAD	&#173;	&shy;	%AD	%C2%AD	soft hyphen = discretionary hyphen
®	\xAE	&#174;	&reg;	%AE	%C2%AE	registered sign = registered trademark sign
¯	\xAF	&#175;	&macr;	%AF	%C2%AF	macron = spacing macron = overline = APL overbar
°	\xB0	&#176;	&deg;	%B0	%C2%B0	degree sign
±	\xB1	&#177;	&plusmn;	%B1	%C2%B1	plus-minus sign = plus-or-minus sign
²	\xB2	&#178;	&sup2;	%B2	%C2%B2	superscript two = superscript digit two = squared
³	\xB3	&#179;	&sup3;	%B3	%C2%B3	superscript three = superscript digit three = cubed
´	\xB4	&#180;	&acute;	%B4	%C2%B4	acute accent = spacing acute
µ	\xB5	&#181;	&micro;	%B5	%C2%B5	micro sign
¶	\xB6	&#182;	&para;	%B6	%C2%B6	pilcrow sign = paragraph sign
·	\xB7	&#183;	&middot;	%B7	%C2%B7	middle dot = Georgian comma = Greek middle dot
¸	\xB8	&#184;	&cedil;	%B8	%C2%B8	cedilla = spacing cedilla
¹	\xB9	&#185;	&sup1;	%B9	%C2%B9	superscript one = superscript digit one
º	\xBA	&#186;	&ordm;	%BA	%C2%BA	masculine ordinal indicator
»	\xBB	&#187;	&raquo;	%BB	%C2%BB	right-pointing double angle quotation mark = right pointing guillemet
¼	\xBC	&#188;	&frac14;	%BC	%C2%BC	vulgar fraction one quarter = fraction one quarter
½	\xBD	&#189;	&frac12;	%BD	%C2%BD	vulgar fraction one half = fraction one half
¾	\xBE	&#190;	&frac34;	%BE	%C2%BE	vulgar fraction three quarters = fraction three quarters
¿	\xBF	&#191;	&iquest;	%BF	%C2%BF	inverted question mark = turned question mark
×	\xD7	&#215;	&times;	%D7	%C3%97	multiplication sign
÷	\xF7	&#247;	&divide;	%F7	%C3%B7	division sign
ƒ	\u0192	&#402;	&fnof;	%u0192	%C6%92	latin small f with hook = function = florin
ˆ	\u02C6	&#710;	&circ;	%u02C6	%CB%86	modifier letter circumflex accent
˜	\u02DC	&#732;	&tilde;	%u02DC	%CB%9C	small tilde
	\u2002	&#8194;	&ensp;	%u2002	%E2%80%82	en space
	\u2003	&#8195;	&emsp;	%u2003	%E2%80%83	em space
	\u2009	&#8201;	&thinsp;	%u2009	%E2%80%89	thin space
	\u200C	&#8204;	&zwnj;	%u200C	%E2%80%8C	zero width non-joiner
	\u200D	&#8205;	&zwj;	%u200D	%E2%80%8D	zero width joiner
	\u200E	&#8206;	&lrm;	%u200E	%E2%80%8E	left-to-right mark
	\u200F	&#8207;	&rlm;	%u200F	%E2%80%8F	right-to-left mark
–	\u2013	&#8211;	&ndash;	%u2013	%E2%80%93	en dash
—	\u2014	&#8212;	&mdash;	%u2014	%E2%80%94	em dash
‘	\u2018	&#8216;	&lsquo;	%u2018	%E2%80%98	left single quotation mark
’	\u2019	&#8217;	&rsquo;	%u2019	%E2%80%99	right single quotation mark
‚	\u201A	&#8218;	&sbquo;	%u201A	%E2%80%9A	single low-9 quotation mark
“	\u201C	&#8220;	&ldquo;	%u201C	%E2%80%9C	left double quotation mark
”	\u201D	&#8221;	&rdquo;	%u201D	%E2%80%9D	right double quotation mark
„	\u201E	&#8222;	&bdquo;	%u201E	%E2%80%9E	double low-9 quotation mark
†	\u2020	&#8224;	&dagger;	%u2020	%E2%80%A0	dagger
‡	\u2021	&#8225;	&Dagger;	%u2021	%E2%80%A1	double dagger
•	\u2022	&#8226;	&bull;	%u2022	%E2%80%A2	bullet = black small circle
…	\u2026	&#8230;	&hellip;	%u2026	%E2%80%A6	horizontal ellipsis = three dot leader
‰	\u2030	&#8240;	&permil;	%u2030	%E2%80%B0	per mille sign
′	\u2032	&#8242;	&prime;	%u2032	%E2%80%B2	prime = minutes = feet
″	\u2033	&#8243;	&Prime;	%u2033	%E2%80%B3	double prime = seconds = inches
‹	\u2039	&#8249;	&lsaquo;	%u2039	%E2%80%B9	single left-pointing angle quotation mark
›	\u203A	&#8250;	&rsaquo;	%u203A	%E2%80%BA	single right-pointing angle quotation mark
‾	\u203E	&#8254;	&oline;	%u203E	%E2%80%BE	overline = spacing overscore
⁄	\u2044	&#8260;	&frasl;	%u2044	%E2%81%84	fraction slash
€	\u20AC	&#8364;	&euro;	%u20AC	%E2%82%AC	euro sign
ℑ	\u2111	&#8465;	&image;	%u2111	%E2%84%91	blackletter capital I = imaginary part
ℓ	\u2113	&#8467;		%u2113	%E2%84%93	script small L
№	\u2116	&#8470;		%u2116	%E2%84%96	numero sign
℘	\u2118	&#8472;	&weierp;	%u2118	%E2%84%98	script capital P = power set = Weierstrass p
ℜ	\u211C	&#8476;	&real;	%u211C	%E2%84%9C	blackletter capital R = real part symbol
™	\u2122	&#8482;	&trade;	%u2122	%E2%84%A2	trademark sign
ℵ	\u2135	&#8501;	&alefsym;	%u2135	%E2%84%B5	alef symbol = first transfinite cardinal
←	\u2190	&#8592;	&larr;	%u2190	%E2%86%90	leftwards arrow
↑	\u2191	&#8593;	&uarr;	%u2191	%E2%86%91	upwards arrow
→	\u2192	&#8594;	&rarr;	%u2192	%E2%86%92	rightwards arrow
↓	\u2193	&#8595;	&darr;	%u2193	%E2%86%93	downwards arrow
↔	\u2194	&#8596;	&harr;	%u2194	%E2%86%94	left right arrow
↵	\u21B5	&#8629;	&crarr;	%u21B5	%E2%86%B5	downwards arrow with corner leftwards = carriage return
⇐	\u21D0	&#8656;	&lArr;	%u21D0	%E2%87%90	leftwards double arrow
⇑	\u21D1	&#8657;	&uArr;	%u21D1	%E2%87%91	upwards double arrow
⇒	\u21D2	&#8658;	&rArr;	%u21D2	%E2%87%92	rightwards double arrow
⇓	\u21D3	&#8659;	&dArr;	%u21D3	%E2%87%93	downwards double arrow
⇔	\u21D4	&#8660;	&hArr;	%u21D4	%E2%87%94	left right double arrow
∀	\u2200	&#8704;	&forall;	%u2200	%E2%88%80	for all
∂	\u2202	&#8706;	&part;	%u2202	%E2%88%82	partial differential
∃	\u2203	&#8707;	&exist;	%u2203	%E2%88%83	there exists
∅	\u2205	&#8709;	&empty;	%u2205	%E2%88%85	empty set = null set = diameter
∇	\u2207	&#8711;	&nabla;	%u2207	%E2%88%87	nabla = backward difference
∈	\u2208	&#8712;	&isin;	%u2208	%E2%88%88	element of
∉	\u2209	&#8713;	&notin;	%u2209	%E2%88%89	not an element of
∋	\u220B	&#8715;	&ni;	%u220B	%E2%88%8B	contains as member
∏	\u220F	&#8719;	&prod;	%u220F	%E2%88%8F	n-ary product = product sign
∑	\u2211	&#8721;	&sum;	%u2211	%E2%88%91	n-ary sumation
−	\u2212	&#8722;	&minus;	%u2212	%E2%88%92	minus sign
∗	\u2217	&#8727;	&lowast;	%u2217	%E2%88%97	asterisk operator
√	\u221A	&#8730;	&radic;	%u221A	%E2%88%9A	square root = radical sign
∝	\u221D	&#8733;	&prop;	%u221D	%E2%88%9D	proportional to
∞	\u221E	&#8734;	&infin;	%u221E	%E2%88%9E	infinity
∠	\u2220	&#8736;	&ang;	%u2220	%E2%88%A0	angle
∧	\u2227	&#8743;	&and;	%u2227	%E2%88%A7	logical and = wedge
∨	\u2228	&#8744;	&or;	%u2228	%E2%88%A8	logical or = vee
∩	\u2229	&#8745;	&cap;	%u2229	%E2%88%A9	intersection = cap
∪	\u222A	&#8746;	&cup;	%u222A	%E2%88%AA	union = cup
∫	\u222B	&#8747;	&int;	%u222B	%E2%88%AB	integral
∴	\u2234	&#8756;	&there4;	%u2234	%E2%88%B4	therefore
∼	\u223C	&#8764;	&sim;	%u223C	%E2%88%BC	tilde operator = varies with = similar to
≅	\u2245	&#8773;	&cong;	%u2245	%E2%89%85	approximately equal to
≈	\u2248	&#8776;	&asymp;	%u2248	%E2%89%88	almost equal to = asymptotic to
≠	\u2260	&#8800;	&ne;	%u2260	%E2%89%A0	not equal to
≡	\u2261	&#8801;	&equiv;	%u2261	%E2%89%A1	identical to
≤	\u2264	&#8804;	&le;	%u2264	%E2%89%A4	less-than or equal to
≥	\u2265	&#8805;	&ge;	%u2265	%E2%89%A5	greater-than or equal to
⊂	\u2282	&#8834;	&sub;	%u2282	%E2%8A%82	subset of
⊃	\u2283	&#8835;	&sup;	%u2283	%E2%8A%83	superset of
⊄	\u2284	&#8836;	&nsub;	%u2284	%E2%8A%84	not a subset of
⊆	\u2286	&#8838;	&sube;	%u2286	%E2%8A%86	subset of or equal to
⊇	\u2287	&#8839;	&supe;	%u2287	%E2%8A%87	superset of or equal to
⊕	\u2295	&#8853;	&oplus;	%u2295	%E2%8A%95	circled plus = direct sum
⊗	\u2297	&#8855;	&otimes;	%u2297	%E2%8A%97	circled times = vector product
⊥	\u22A5	&#8869;	&perp;	%u22A5	%E2%8A%A5	up tack = orthogonal to = perpendicular
⋅	\u22C5	&#8901;	&sdot;	%u22C5	%E2%8B%85	dot operator
⌈	\u2308	&#8968;	&lceil;	%u2308	%E2%8C%88	left ceiling = apl upstile
⌉	\u2309	&#8969;	&rceil;	%u2309	%E2%8C%89	right ceiling
⌊	\u230A	&#8970;	&lfloor;	%u230A	%E2%8C%8A	left floor = apl downstile
⌋	\u230B	&#8971;	&rfloor;	%u230B	%E2%8C%8B	right floor
⟨	\u2329	&#9001;	&lang;	%u2329	%E2%8C%A9	left-pointing angle bracket = bra
⟩	\u232A	&#9002;	&rang;	%u232A	%E2%8C%AA	right-pointing angle bracket = ket
◊	\u25CA	&#9674;	&loz;	%u25CA	%E2%97%8A	lozenge
♠	\u2660	&#9824;	&spades;	%u2660	%E2%99%A0	black spade suit
♣	\u2663	&#9827;	&clubs;	%u2663	%E2%99%A3	black club suit = shamrock
♥	\u2665	&#9829;	&hearts;	%u2665	%E2%99%A5	black heart suit = valentine
♦	\u2666	&#9830;	&diams;	%u2666	%E2%99%A6	black diamond suit