HTML 字符实体

以下部分提供字符实体引用的完整列表。

基本实体

下表列出了 HTML 中的基本实体。

下表列出了货币符号的实体。

下表列出了版权、商标和注册符号的实体。

下表列出了一般标点符号的实体。

字符	实体名称	实体编号	说明
	&ensp;		En space
	&emsp;		Em space
			Thin space
			Nonbreaking space
–	–	–	En dash
—	—	—	Em dash
‘	‘	‘	Left/Opening single-quote
’	’	’	Right/Closing single-quote and apostrophe
‚	&sbquo;	‚	Single low-9 quotation mark
“	“	“	Left/Opening double-quote
”	”	”	Right/Closing double-quote
„	&bdquo;	„	Double low-9 quotation mark
‹	&lsaquo;	‹	Left-pointing single angle quotation mark
›	&rsaquo;	›	Left-pointing single angle quotation mark
«	«	«	Left-pointing double angle quotation mark
»	»	»	Right-pointing double angle quotation mark
†	&dagger;	†	Dagger
‡	&Dagger;	†	Double dagger
•	•	•	Bullet
…	&hellep;	…	Ellipses
‰	&permil;	‰	Per mille symbol (per thousand)
′	′	′	Prime, minutes, feet
″	″	″	Double prime, seconds, inches
‾	&oline;	‾	Overline
⁄	&frasl;	⁄	Fraction slash

下表列出了箭头的实体。

字符	实体名称	实体编号	说明
←	←	←	Left arrow
↑	↑	↑	Up arrow
→	→	→	Right arrow
↓	↓	↓	Down arrow
↔	↔	↔	Left-right arrow
↵	&crarr;	↵	Down arrow with corner leftward
⇐	⇐	⇐	Leftward double arrow
⇑	&uArr;	⇑	Upward double arrow
⇒	⇒	⇒	Rightward double arrow
⇓	&dArr;	⇓	Downward double arrow
⇔	⇔	⇔	Left-right double arrow

下表列出了数学符号的实体。

字符	实体名称	实体编号	说明
∀	∀	∀	for all
∂	∂	∂	Partial differential
∃	∃	∃	There exists
∅	∅	∅	Empty set, null set, diameter
∇	∇	∇	Nabla, backward difference
∈	∈	∈	Element of
∉	∉	∉	Not an element of
∋	&ni;	∋	Contains as a member
∏	∏	∏	N-ary product, product sign
∑	∑	∑	N-ary summation
−	−	−	Minus sign
∗	&lowast;	∗	Asterisk operator
√	√	√	Square root, radical sign
∝	&prop;	∝	Proportional to
∞	∞	∞	Infinity
∠	&ang;	∠	Angle
∧	&and;	∧	Logical and, wedge
∨	&or;	∨	Logical or, vee
∩	∩	∩	Intersection, cap
∪	∪	∪	Union, cup
∫	∫	∫	Integral
∴	&there4;	∴	Therefore
∼	&sim;	∼	Tilde operator, varies with, similar to
≅	&cong;	≅	Approximately equal to
≈	≈	≈	Almost equal to, asymptotic to
≠	≠	≠	Not equal to
≡	&equiv;	≡	Equivalent to
≤	≤	≤	Less than or equal to
≥	≥	≥	Greater than or equal to
⊂	⊂	⊂	Subset of
⊃	⊃	⊃	Superset of
⊄	&nsub;	⊄	Not a subset of
⊆	&sube;	⊆	Subset of or equal to
⊇	&supe;	⊇	Superset of or equal to
⊕	&oplus;	⊕	Circled plus, direct sum
⊗	&otimes;	⊗	Circled times, vector product
⊥	&perp;	⊥	Up tack, orthogonal to, perpendicular
⋅	⋅	⋅	Dot operator

下表列出了希腊字母的实体。

字符	实体名称	实体编号	说明
Α	Α	Α	Greek capital alpha
Β	Β	Β	Greek capital beta
Γ	Γ	Γ	Greek capital gamma
Δ	Δ	Δ	Greek capital delta
Ε	Ε	Ε	Greek capital epsilon
Ζ	Ζ	Ζ	Greek capital zeta
Η	Η	Η	Greek capital eta
Θ	Θ	Θ	Greek capital theta
Ι	Ι	Ι	Greek capital iota
Κ	Κ	Κ	Greek capital kappa
Λ	Λ	Λ	Greek capital lambda
Μ	Μ	Μ	Greek capital mu
Ν	Ν	Ν	Greek capital nu
Ξ	Ξ	Ξ	Greek capital xi
Ο	Ο	Ο	Greek capital omicron
Π	Π	Π	Greek capital pi
Ρ	Ρ	Ρ	Greek capital rho
Σ	Σ	Σ	Greek capital sigma
Τ	Τ	Τ	Greek capital tau
Υ	Υ	Υ	Greek capital upsilon
Φ	Φ	Φ	Greek capital phi
Χ	Χ	Χ	Greek capital chi
Ψ	Ψ	Ψ	Greek capital psi
Ω	Ω	Ω	Greek capital omega
α	α	α	Greek small alpha
β	β	β	Greek small beta
γ	γ	γ	Greek small gamma
δ	δ	δ	Greek small delta
ε	ε	ε	Greek small epsilon
ζ	ζ	ζ	Greek small zeta
η	η	η	Greek small eta
θ	θ	θ	Greek small theta
ι	ι	ι	Greek small iota
κ	κ	κ	Greek small kappa
λ	λ	λ	Greek small lambda
μ	μ	μ	Greek small mu
ν	ν	ν	Greek small nu
ξ	ξ	ξ	Greek small xi
ο	ο	ο	Greek small omicron
π	π	π	Greek small pi
ρ	ρ	ρ	Greek small rho
ς	&sigmaf;	ς	Greek small letter final sigma
σ	σ	σ	Greek small sigma
τ	τ	τ	Greek small tau
υ	υ	υ	Greek small upsilon
φ	φ	φ	Greek small phi
χ	χ	χ	Greek small chi
ψ	ψ	ψ	Greek small psi
ω	ω	ω	Greek small omega
ϑ	&thetasym;	ϑ	Greek small theta symbol
ϒ	&upsih;	ϒ	Greek upsilon with hook
ϖ	ϖ	ϖ	Greek pi symbol

下表列出了 HTML 支持的其他有用实体。

字符	实体名称	实体编号	说明
⌈	&lceil;	⌈	Left ceiling
⌉	&rceil;	⌉	Right ceiling
⌊	&lfloor;	⌊	Left floor
⌋	&rfloor;	⌋	Right floor
⟨	&lang;	⟨	Left-pointing angle bracket
⟩	&rang;	⟩	Right-pointing angle bracket
◊	&loz;	◊	Lozenge
ℑ	&image;	ℑ	Blackletter capital I, imaginary part
℘	&weierp;	℘	Script capital P, power set
ℜ	&real;	ℜ	Blackletter capital R, real part
ℵ	&alefsym;	ℵ	Alef symbol, or first transfinite cardinal
♠	&spades;	♠	Black spade suit
♣	&clubs;	♣	Black club suit
♥	&hearts;	♥	Black heart suit
♦	&diams;	♦	Black diamond suit