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今日实时热搜HTML Entity List
Complete list of HTML entities with their numbers and names. Also included is a full list of ASCII characters that can be represented in HTML (i.e. printable characters).
ASCII Characters (Printable)
Only printable characters are displayed as control characters (0-31) shouldn't be present in HTML pages since they have no visual representations.
Entity Name
Entity Number
Description
&& Space
!!Exclamation mark
""Quotation mark
##Number sign
$$Dollar sign
%%Percent sign
&&&Ampersand
''Apostrophe
((Opening/Left Parenthesis
))Closing/Right Parenthesis
**Asterisk
++Plus sign
,,Comma
--Hyphen
..Period
//Slash
00Digit 0
11Digit 1
22Digit 2
33Digit 3
44Digit 4
55Digit 5
66Digit 6
77Digit 7
88Digit 8
99Digit 9
::Colon
&#59;&#59;Semicolon
<&<Less-than
==Equals sign
>&>Greater than
??Question mark
@@At sign
AAUppercase A
BBUppercase B
CCUppercase C
DDUppercase D
EEUppercase E
FFUppercase F
GGUppercase G
HHUppercase H
IIUppercase I
JJUppercase J
KKUppercase K
LLUppercase L
MMUppercase M
NNUppercase N
OOUppercase O
PPUppercase P
QQUppercase Q
RRUppercase R
SSUppercase S
TTUppercase T
UUUppercase U
VVUppercase V
WWUppercase W
XXUppercase X
YYUppercase Y
ZZUppercase Z
[[Opening/Left square bracket
\\Backslash
]]Closing/Right square bracket
^^Caret
__Underscore
``Grave accent
aaLowercase a
bbLowercase b
ccLowercase c
ddLowercase d
eeLowercase e
ffLowercase f
ggLowercase g
hhLowercase h
iiLowercase i
jjLowercase j
kkLowercase k
llLowercase l
mmLowercase m
nnLowercase n
ooLowercase o
ppLowercase p
qqLowercase q
rrLowercase r
ssLowercase s
ttLowercase t
uuLowercase u
vvLowercase v
wwLowercase w
xxLowercase x
yyLowercase y
zzLowercase z
{{Opening/Left curly brace
||Vertical bar
}}Closing/Right curly brace
~~Tilde
ISO-8859-1 Characters
Full list of supported ISO-8859-1 characters. Notice that the names are case sensitive, hence if you want an uppercase letter, the name should
also start with an uppercase letter.
Entity Name
Entity Number
Description
À&AÀCapital a with grave accent
Á&AÁCapital a with acute accent
Â&AÂCapital a with circumflex accent
Ã&AÃCapital a with tilde
Ä&AÄCapital a with umlaut
Å&AÅCapital a with ring
Æ&AEÆCapital ae
Ç&CÇCapital c with cedilla
È&EÈCapital e with grave accent
É&EÉCapital e with acute accent
Ê&EÊCapital e with circumflex accent
Ë&EËCapital e with umlaut
Ì&IÌCapital i with grave accent
Í&IÍCapital i with accute accent
Î&IÎCapital i with circumflex accent
Ï&IÏCapital i with umlaut
ÐÐÐCapital eth (Icelandic)
Ñ&NÑCapital n with tilde
Ò&OÒCapital o with grave accent
Ó&OÓCapital o with accute accent
Ô&OÔCapital o with circumflex accent
Õ&OÕCapital o with tilde
Ö&OÖCapital o with umlaut
Ø&OØCapital o with slash
Ù&UÙCapital u with grave accent
Ú&UÚCapital u with acute accent
Û&UÛCapital u with circumflex accent
Ü&UÜCapital u with umlaut
Ý&YÝCapital y with acute accent
ÞÞÞCapital thorn (Icelandic)
ß&ßLowercase sharp s (German)
à&àLowercase a with grave accent
á&áLowercase a with acute accent
â&âLowercase a with circumflex accent
ã&ãLowercase a with tilde
ä&äLowercase a with umlaut
å&åLowercase a with ring
æ&æLowercase ae
ç&çLowercase c with cedilla
è&èLowercase e with grave accent
é&éLowercase e with acute accent
ê&êLowercase e with circumflex accent
ë&ëLowercase e with umlaut
ì&ìLowercase i with grave accent
í&íLowercase i with acute accent
î&îLowercase i with circumflex accent
ï&ïLowercase i with umlaut
ð&ðLowercase eth (Icelandic)
ñ&ñLowercase n with tilde
ò&òLowercase o with grave accent
ó&óLowercase o with acute accent
ô&ôLowercase o with circumflex accent
õ&õLowercase o with tilde
ö&öLowercase o with umlaut
ø&øLowercase o with slash
ù&ùLowercase u with grave accent
ú&úLowercase u with acute accent
û&ûLowercase u with circumflex accent
ü&üLowercase u with umlaut
ý&ýLowercase y with acute accent
þ&þLowercase thorn (Icelandic)
ÿ&ÿLowercase y with umlaut
ISO-8859-1 Symbols
Full list of supported ISO-8859-1 symbols in HTML.
Entity Name
Entity Number
Description
 & Non-breaking space
¡&¡Inverted exclamation mark
¢&¢Cent
£&£Pound
¤&¤Currency
¥&¥Yen
¦&¦Broken vertical bar
§&§Section
¨&¨Spacing diaeresis
©&©Copyright
ª&ªFeminine ordinal indicator
«&«Opening/Left angle quotation mark
¬&¬Negation
­&­Soft hyphen
®&®Registered trademark
¯&¯Spacing macron
°&°Degree
±&±Plus or minus
²²²Superscript 2
³³³Superscript 3
´&´Spacing acute
µ&µMicro
¶&¶Paragraph
¸&¸Spacing cedilla
¹¹¹Superscript 1
º&ºMasculine ordinal indicator
»&»Closing/Right angle quotation mark
¼¼¼Fraction 1/4
½½½Fraction 1/2
¾¾¾Fraction 3/4
¿&¿Inverted question mark
×&×Multiplication
÷&÷Divide
Math Symbols
Full list of all supported math symbols in HTML.
Entity Name
Entity Number
Description
∀&∀For all
∂&∂Part
∃&∃Exist
∅&∅Empty
∇&∇Nabla
∈&∈Is in
∉&∉Not in
∋&∋Ni
∏&∏Product
∑&∑Sum
−&−Minus
∗&∗Asterisk (Lowast)
√&√Square root
∝&∝Proportional to
∞&∞Infinity
∠&∠Angle
∧&∧And
∨&∨Or
∩&∩Cap
∪&∪Cup
∫&∫Integral
∴∴∴Therefore
∼&∼Similar to
≅&≅Congurent to
≈&≈Almost equal
≠&≠Not equal
≡&≡Equivalent
≤&≤Less or equal
≥&≥Greater or equal
⊂&⊂Subset of
⊃&⊃Superset of
⊄&⊄Not subset of
⊆&⊆Subset or equal
⊇&⊇Superset or equal
⊕&⊕Circled plus
⊗&⊗Circled times
⊥&⊥Perpendicular
⋅&⋅Dot operator
Greek Letters
Full list of all supported greek letters in HTML.
Entity Name
Entity Number
Description
Α&AΑAlpha
Β&BΒBeta
Γ&GΓGamma
Δ&DΔDelta
Ε&EΕEpsilon
Ζ&ZΖZeta
Η&EΗEta
Θ&TΘTheta
Ι&IΙIota
Κ&KΚKappa
Λ&LΛLambda
ΜΜΜMu
ΝΝΝNu
ΞΞΞXi
Ο&OΟOmicron
ΠΠΠPi
Ρ&RΡRho
Σ&SΣSigma
Τ&TΤTau
Υ&UΥUpsilon
Φ&PΦPhi
Χ&CΧChi
Ψ&PΨPsi
Ω&OΩOmega
α&αalpha
β&βbeta
γ&γgamma
δ&δdelta
ε&εepsilon
ζ&ζzeta
η&ηeta
θ&θtheta
ι&ιiota
κ&κkappa
λ&λlambda
μ&μmu
ν&νnu
ξ&ξxi
ο&οomicron
π&πpi
ρ&ρrho
ς&ςsigmaf
σ&σsigma
σ&σsigma
τ&τtau
υ&υupsilon
φ&φphi
χ&χchi
ψ&ψpsi
ω&ωomega
ϑ&ϑTheta symbol
ϒ&ϒUpsilon symbol
ϖ&ϖPi symbol
Miscellaneous HTML entitiesList of miscellaneous HTML entities.
Entity Name
Entity Number
Description
Œ&OEŒUppercase ligature OE
œ&œLowercase ligature OE
Š&SŠUppercase S with caron
š&šLowercase S with caron
Ÿ&YŸCapital Y with diaeres
ƒ&ƒLowercase with hook
ˆ&ˆCircumflex accent
˜&˜Tilde
 & En space
 & Em space
 & Thin space
‌&‌Zero width non-joiner
‍&‍Zero width joiner
‎&‎Left-to-right mark
‏&‏Right-to-left mark
–&–En dash
—&—Em dash
‘&‘Left single quotation mark
’&’Right single quotation mark
‚&‚Single low-9 quotation mark
“&“Left double quotation mark
”&”Right double quotation mark
„&„Double low-9 quotation mark
†&†Dagger
‡&D‡Double dagger
•&•Bullet
…&…Horizontal ellipsis
‰&‰Per mille
′&′Minutes (Degrees)
″&P″Seconds (Degrees)
‹&‹Single left angle quotation
›&‹Single right angle quotation
‾&‾Overline
€&€Euro
™&™Trademark
←&←Left arrow
↑&↑Up arrow
→&→Right arrow
↓&↓Down arrow
↔&↔Left right arrow
↵&↵Carriage return arrow
⌈&⌈Left ceiling
⌉&⌉Right ceiling
⌊&⌊Left floor
⌋&⌋Right floor
◊&◊Lozenge
♠&♠Spade
♣&♣Club
♥&♥Heart
♦&♦Diamond
- Brought to you by MrForms. NEQ:已知函数f（x）=-3（x-m）²+ 2m²当x∈［2，3］y有最大值8求m的值, 已知函数f（x）=-3（x-m）&#178
已知函数f（x）=-3（x-m）²+ 2m²当x∈［2，3］y有最大值8求m的值
匿名 已知函数f（x）=-3（x-m）²+ 2m²当x∈［2，3］y有最大值8求m的值
因为函数开口向下，所以在对称轴的地方取到最大值，又因为最大值等于8，所以当X=2，M=2时担穿曹费丨渡查杀肠辑，Y有最大值8
x=m时f(x)取最大值，此时2m^2=8.所以m=2f(x)=(1+x/2)²–2,当x>=时,解方程f(x)=f^–1(x)
Kyoya恭OX3
哦，错了，是—2
显然f(x)在x>=-2递增
所以f(x)=f^–1(x)即f[f(x)]=x和f(x)=x同解
所以(1+x/2)^2-2=x
解得x=-2，x=2
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