HTML中的特殊字符
最近在编写WEB程序的时候,发现HTML有许多内定的特殊字符。例如" "就是表示非断行空白,其实就是空字符串。
常用的特殊字符有:
HTML 原代码 显示结果 描述
< < 小于号或显示标记
> > 大于号或显示标记
& & 可用于显示其它特殊字符
" " 引号
® ® 已注册
© © 版权
™ ™ 商标
  半个空白位
  一个空白位
不断行的空白
全部特殊字符为:
Character 字符 |
Decimal code 十进制编码 |
Named entity 已命名实体 |
Character 字符 |
Decimal code 十进制编码 |
Named entity 已命名实体 |
---|---|---|---|---|---|
--- | � | --- | --- | --- | |
--- | --- | --- | --- | ||
--- | --- | --- | --- | ||
--- | --- | --- | --- | ||
--- | --- | --- | --- | ||
--- | --- | --- | --- | ||
--- | --- | --- | --- | ||
--- | --- | --- | --- | ||
--- | --- | --- | --- | ||
--- | --- | --- | --- | ||
--- | --- | --- | --- | ||
--- | --- | --- | --- | ||
--- | --- | --- | --- | ||
--- | --- | --- | --- | ||
--- | --- | --- | --- | ||
--- | --- | --- | --- | ||
--- | ! | ! | --- | ||
" | " | " | # | # | --- |
$ | $ | --- | % | % | --- |
& | & | & | ' | ' | --- |
( | ( | --- | ) | ) | --- |
* | * | --- | + | + | --- |
, | , | --- | - | - | --- |
. | . | --- | / | / | --- |
0 | 0 | --- | 1 | 1 | --- |
2 | 2 | --- | 3 | 3 | --- |
4 | 4 | --- | 5 | 5 | --- |
6 | 6 | --- | 7 | 7 | --- |
8 | 8 | --- | 9 | 9 | --- |
: | : | --- | ; | ; | --- |
< | < | < | = | = | --- |
> | > | > | ? | ? | --- |
@ | @ | --- | A | A | --- |
B | B | --- | C | C | --- |
D | D | --- | E | E | --- |
F | F | --- | G | G | --- |
H | H | --- | I | I | --- |
J | J | --- | K | K | --- |
L | L | --- | M | M | --- |
N | N | --- | O | O | --- |
P | P | --- | Q | Q | --- |
R | R | --- | S | S | --- |
T | T | --- | U | U | --- |
V | V | --- | W | W | --- |
X | X | --- | Y | Y | --- |
Z | Z | --- | [ | [ | --- |
\ | \ | --- | ] | ] | --- |
^ | ^ | --- | _ | _ | --- |
` | ` | --- | a | a | --- |
b | b | --- | c | c | --- |
d | d | --- | e | e | --- |
f | f | --- | g | g | --- |
h | h | --- | i | i | --- |
j | j | --- | k | k | --- |
l | l | --- | m | m | --- |
n | n | --- | o | o | --- |
p | p | --- | q | q | --- |
r | r | --- | s | s | --- |
t | t | --- | u | u | --- |
v | v | --- | w | w | --- |
x | x | --- | y | y | --- |
z | z | --- | { | { | --- |
| | | | --- | } | } | --- |
~ | ~ | --- | --- | | --- |
| ¡ | ¡ | ¡ | ||
¢ | ¢ | ¢ | £ | £ | £ |
¤ | ¤ | ¤ | ¥ | ¥ | ¥ |
¦ | ¦ | ¦ or &brkbar; | § | § | § |
¨ | ¨ | ¨ or ¨ | © | © | © |
ª | ª | ª | « | « | « |
¬ | ¬ | ¬ | | | ­ |
® | ® | ® | ¯ | ¯ | ¯ or &hibar; |
° | ° | ° | ± | ± | ± |
² | ² | ² | ³ | ³ | ³ |
´ | ´ | ´ | µ | µ | µ |
¶ | ¶ | ¶ | · | · | · |
¸ | ¸ | ¸ | ¹ | ¹ | ¹ |
º | º | º | » | » | » |
¼ | ¼ | ¼ | ½ | ½ | ½ |
¾ | ¾ | ¾ | ¿ | ¿ | ¿ |
À | À | À | Á | Á | Á |
 |  |  | à | à | à |
Ä | Ä | Ä | Å | Å | Å |
Æ | Æ | Æ | Ç | Ç | Ç |
È | È | È | É | É | É |
Ê | Ê | Ê | Ë | Ë | Ë |
Ì | Ì | Ì | Í | Í | Í |
Î | Î | Î | Ï | Ï | Ï |
Ð | Ð | Ð | Ñ | Ñ | Ñ |
Ò | Ò | Ò | Ó | Ó | Ó |
Ô | Ô | Ô | Õ | Õ | Õ |
Ö | Ö | Ö | × | × | × |
Ø | Ø | Ø | Ù | Ù | Ù |
Ú | Ú | Ú | Û | Û | Û |
Ü | Ü | Ü | Ý | Ý | Ý |
Þ | Þ | Þ | ß | ß | ß |
à | à | à | á | á | á |
â | â | â | ã | ã | ã |
ä | ä | ä | å | å | å |
æ | æ | æ | ç | ç | ç |
è | è | è | é | é | é |
ê | ê | ê | ë | ë | ë |
ì | ì | ì | í | í | í |
î | î | î | ï | ï | ï |
ð | ð | ð | ñ | ñ | ñ |
ò | ò | ò | ó | ó | ó |
ô | ô | ô | õ | õ | õ |
ö | ö | ö | ÷ | ÷ | ÷ |
ø | ø | ø | ù | ù | ù |
ú | ú | ú | û | û | û |
ü | ü | ü | ý | ý | ý |
þ | þ | þ | ÿ | ÿ | ÿ |
Character 字符 |
Named entity 已命名实体 |
Numeric character reference 十进制编码 |
Description 简介 |
---|---|---|---|
扩展拉丁字符 Latin Extended-B | |||
ƒ | ƒ | ƒ | Latin small f with hook, =function, =florin, U0192 ISOtech |
希腊字符 Greek | |||
Α | Α | Α | Greek capital letter alpha, U0391 |
Β | Β | Β | Greek capital letter beta, U0392 |
Γ | Γ | Γ | Greek capital letter gamma, U0393 ISOgrk3 |
Δ | Δ | Δ | Greek capital letter delta, U0394 ISOgrk3 |
Ε | Ε | Ε | Greek capital letter epsilon, U0395 |
Ζ | Ζ | Ζ | Greek capital letter zeta, U0396 |
Η | Η | Η | Greek capital letter eta, U0397 |
Θ | Θ | Θ | Greek capital letter theta, U0398 ISOgrk3 |
Ι | Ι | Ι | Greek capital letter iota, U0399 |
Κ | Κ | Κ | Greek capital letter kappa, U039A |
Λ | Λ | Λ | Greek capital letter lambda, U039B ISOgrk3 |
Μ | Μ | Μ | Greek capital letter mu, U039C |
Ν | Ν | Ν | Greek capital letter nu, U039D |
Ξ | Ξ | Ξ | Greek capital letter xi, U039E ISOgrk3 |
Ο | Ο | Ο | Greek capital letter omicron, U039F |
Π | Π | Π | Greek capital letter pi, U03A0 ISOgrk3 |
Ρ | Ρ | Ρ | Greek capital letter rho, U03A1 |
Σ | Σ | Σ | Greek capital letter sigma, U03A3 ISOgrk3 |
Τ | Τ | Τ | Greek capital letter tau, U03A4 |
Υ | Υ | Υ | Greek capital letter upsilon, U03A5 ISOgrk3 |
Φ | Φ | Φ | Greek capital letter phi, U03A6 ISOgrk3 |
Χ | Χ | Χ | Greek capital letter chi, U03A7 |
Ψ | Ψ | Ψ | Greek capital letter psi, U03A8 ISOgrk3 |
Ω | Ω | Ω | Greek capital letter omega, U03A9 ISOgrk3 |
α | α | α | Greek small letter alpha, U03B1 ISOgrk3 |
β | β | β | Greek small letter beta, U03B2 ISOgrk3 |
γ | γ | γ | Greek small letter gamma, U03B3 ISOgrk3 |
δ | δ | δ | Greek small letter delta, U03B4 ISOgrk3 |
ε | ε | ε | Greek small letter epsilon, U03B5 ISOgrk3 |
ζ | ζ | ζ | Greek small letter zeta, U03B6 ISOgrk3 |
η | η | η | Greek small letter eta, U03B7 ISOgrk3 |
θ | θ | θ | Greek small letter theta, U03B8 ISOgrk3 |
ι | ι | ι | Greek small letter iota, U03B9 ISOgrk3 |
κ | κ | κ | Greek small letter kappa, U03BA ISOgrk3 |
λ | λ | λ | Greek small letter lambda, U03BB ISOgrk3 |
μ | μ | μ | Greek small letter mu, U03BC ISOgrk3 |
ν | ν | ν | Greek small letter nu, U03BD ISOgrk3 |
ξ | ξ | ξ | Greek small letter xi, U03BE ISOgrk3 |
ο | ο | ο | Greek small letter omicron, U03BF NEW |
π | π | π | Greek small letter pi, U03C0 ISOgrk3 |
ρ | ρ | ρ | Greek small letter rho, U03C1 ISOgrk3 |
ς | ς | ς | Greek small letter final sigma, U03C2 ISOgrk3 |
σ | σ | σ | Greek small letter sigma, U03C3 ISOgrk3 |
τ | τ | τ | Greek small letter tau, U03C4 ISOgrk3 |
υ | υ | υ | Greek small letter upsilon, U03C5 ISOgrk3 |
φ | φ | φ | Greek small letter phi, U03C6 ISOgrk3 |
χ | χ | χ | Greek small letter chi, U03C7 ISOgrk3 |
ψ | ψ | ψ | Greek small letter psi, U03C8 ISOgrk3 |
ω | ω | ω | Greek small letter omega, U03C9 ISOgrk3 |
ϑ | ϑ | ϑ | Greek small letter theta symbol, U03D1 NEW |
ϒ | ϒ | ϒ | Greek upsilon with hook symbol, U03D2 NEW |
ϖ | ϖ | ϖ | Greek pi symbol, U03D6 ISOgrk3 |
通用标点符号 General Punctuation | |||
• | • | • | bullet, =black small circle, U2022 ISOpub |
… | … | … | horizontal ellipsis, =three dot leader, U2026 ISOpub |
′ | ′ | ′ | prime, =minutes, =feet, U2032 ISOtech |
″ | ″ | ″ | double prime, =seconds, =inches, U2033 ISOtech |
‾ | ‾ | ‾ | overline, =spacing overscore, U203E NEW |
⁄ | ⁄ | ⁄ | fraction slash, U2044 NEW |
字符标记 Letterlike Symbols | |||
℘ | ℘ | ℘ | script capital P, =power set, =Weierstrass p, U2118 ISOamso |
ℑ | ℑ | ℑ | blackletter capital I, =imaginary part, U2111 ISOamso |
ℜ | ℜ | ℜ | blackletter capital R, =real part symbol, U211C ISOamso |
™ | ™ | ™ | trade mark sign, U2122 ISOnum |
ℵ | ℵ | ℵ | alef symbol, =first transfinite cardinal, U2135 NEW |
箭头 Arrows | |||
← | ← | ← | leftward arrow, U2190 ISOnum |
↑ | ↑ | ↑ | upward arrow, U2191 ISOnum |
→ | → | → | rightward arrow, U2192 ISOnum |
↓ | ↓ | ↓ | downward arrow, U2193 ISOnum |
↔ | ↔ | ↔ | left right arrow, U2194 ISOamsa |
↵ | ↵ | ↵ | downward arrow with corner leftward, =carriage return, U21B5 NEW |
⇐ | ⇐ | ⇐ | leftward double arrow, U21D0 ISOtech |
⇑ | ⇑ | ⇑ | upward double arrow, U21D1 ISOamsa |
⇒ | ⇒ | ⇒ | rightward double arrow, U21D2 ISOtech |
⇓ | ⇓ | ⇓ | downward double arrow, U21D3 ISOamsa |
⇔ | ⇔ | ⇔ | left right double arrow, U21D4 ISOamsa |
数学符号 Mathematical Operators | |||
∀ | ∀ | ∀ | for all, U2200 ISOtech |
∂ | ∂ | ∂ | partial differential, U2202 ISOtech |
∃ | ∃ | ∃ | there exists, U2203 ISOtech |
∅ | ∅ | ∅ | empty set, =null set, =diameter, U2205 ISOamso |
∇ | ∇ | ∇ | nabla, =backward difference, U2207 ISOtech |
∈ | ∈ | ∈ | element of, U2208 ISOtech |
∉ | ∉ | ∉ | not an element of, U2209 ISOtech |
∋ | ∋ | ∋ | contains as member, U220B ISOtech |
∏ | ∏ | ∏ | n-ary product, =product sign, U220F ISOamsb |
− | ∑ | − | n-ary sumation, U2211 ISOamsb |
− | − | − | minus sign, U2212 ISOtech |
∗ | ∗ | ∗ | asterisk operator, U2217 ISOtech |
√ | √ | √ | square root, =radical sign, U221A ISOtech |
∝ | ∝ | ∝ | proportional to, U221D ISOtech |
∞ | ∞ | ∞ | infinity, U221E ISOtech |
∠ | ∠ | ∠ | angle, U2220 ISOamso |
⊥ | ∧ | ⊥ | logical and, =wedge, U2227 ISOtech |
⊦ | ∨ | ⊦ | logical or, =vee, U2228 ISOtech |
∩ | ∩ | ∩ | intersection, =cap, U2229 ISOtech |
∪ | ∪ | ∪ | union, =cup, U222A ISOtech |
∫ | ∫ | ∫ | integral, U222B ISOtech |
∴ | ∴ | ∴ | therefore, U2234 ISOtech |
∼ | ∼ | ∼ | tilde operator, =varies with, =similar to, U223C ISOtech |
≅ | ≅ | ≅ | approximately equal to, U2245 ISOtech |
≅ | ≈ | ≅ | almost equal to, =asymptotic to, U2248 ISOamsr |
≠ | ≠ | ≠ | not equal to, U2260 ISOtech |
≡ | ≡ | ≡ | identical to, U2261 ISOtech |
≤ | ≤ | ≤ | less-than or equal to, U2264 ISOtech |
≥ | ≥ | ≥ | greater-than or equal to, U2265 ISOtech |
⊂ | ⊂ | ⊂ | subset of, U2282 ISOtech |
⊃ | ⊃ | ⊃ | superset of, U2283 ISOtech |
⊄ | ⊄ | ⊄ | not a subset of, U2284 ISOamsn |
⊆ | ⊆ | ⊆ | subset of or equal to, U2286 ISOtech |
⊇ | ⊇ | ⊇ | superset of or equal to, U2287 ISOtech |
⊕ | ⊕ | ⊕ | circled plus, =direct sum, U2295 ISOamsb |
⊗ | ⊗ | ⊗ | circled times, =vector product, U2297 ISOamsb |
⊥ | ⊥ | ⊥ | up tack, =orthogonal to, =perpendicular, U22A5 ISOtech |
⋅ | ⋅ | ⋅ | dot operator, U22C5 ISOamsb |
其他技术符号 Miscellaneous Technical | |||
⌈ | ⌈ | ⌈ | left ceiling, =apl upstile, U2308, ISOamsc |
⌉ | ⌉ | ⌉ | right ceiling, U2309, ISOamsc |
⌊ | ⌊ | ⌊ | left floor, =apl downstile, U230A, ISOamsc |
⌋ | ⌋ | ⌋ | right floor, U230B, ISOamsc |
〈 | ⟨ | 〈 | left-pointing angle bracket, =bra, U2329 ISOtech |
〉 | ⟩ | 〉 | right-pointing angle bracket, =ket, U232A ISOtech |
几何图形 Geometric Shapes | |||
◊ | ◊ | ◊ | lozenge, U25CA ISOpub |
其他标记 Miscellaneous Symbols | |||
♠ | ♠ | ♠ | black spade suit, U2660 ISOpub |
♣ | ♣ | ♣ | black club suit, =shamrock, U2663 ISOpub |
♥ | ♥ | ♥ | black heart suit, =valentine, U2665 ISOpub |
♦ | ♦ | ♦ | black diamond suit, U2666 ISOpub |