HTML字符实体(Character Entities)
有些字符在HTML里有特别的含义,比如小于号<就表示HTML Tag的开始,这个小于号是不显示在我们最终看到的网页里的。那如果我们希望在网页中显示一个小于号,该怎么办呢?
这就要说到HTML字符实体(HTML Character Entities)了。
一个字符实体(Character Entity)分成三部分:第一部分是一个&符号,英文叫ampersand;第二部分是实体(Entity)名字或者是#加上实体(Entity)编号;第三部分是一个分号。
比如,要显示小于号,就可以写<或者<。
用实体(Entity)名字的好处是比较好理解,一看lt,大概就猜出是less than的意思,但是其劣势在于并不是所有的浏览器都支持最新的Entity名字。而实体(Entity)编号,各种浏览器都能处理。
注意:Entity是区分大小写的。
如何显示空格
通常情况下,HTML会自动截去多余的空格。不管你加多少空格,都被看做一个空格。比如你在两个字之间加了10个空格,HTML会截去9个空格,只保留一个。为了在网页中增加空格,你可以使用 表示空格。
最常用的字符实体(Character Entities)
显示结果 |
说明 |
Entity Name |
Entity Number |
|
显示一个空格 |
|
  |
< |
小于 |
< |
< |
> |
大于 |
> |
> |
& |
&符号 |
& |
& |
" |
双引号 |
" |
" |
其他常用的字符实体(Character Entities)
显示结果 |
说明 |
Entity Name |
Entity Number |
? |
版权 |
© |
© |
? |
注册商标 |
® |
® |
× |
乘号 |
× |
× |
÷ |
除号 |
÷ |
÷ |
ISO Latin-1字符集:
字符
|
十进制字符编号 |
实体名字 |
说明 |
--- |
� |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
	 |
--- |
制表符Horizontal tab |
--- |
|
--- |
换行Line feed |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
|
--- |
回车Carriage Return |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
--- |
 |
--- |
未使用Unused |
|
  |
--- |
Space |
! |
! |
--- |
惊叹号Exclamation mark |
" |
" |
" |
双引号Quotation mark |
# |
# |
--- |
数字标志Number sign |
$ |
$ |
--- |
美元标志Dollar sign |
% |
% |
--- |
百分号Percent sign |
& |
& |
& |
Ampersand |
" |
' |
--- |
单引号Apostrophe |
( |
( |
--- |
小括号左边部分Left parenthesis |
) |
) |
--- |
小括号右边部分Right parenthesis |
* |
* |
--- |
星号Asterisk |
+ |
+ |
--- |
加号Plus sign |
, |
, |
--- |
逗号Comma |
- |
- |
--- |
连字号Hyphen |
. |
. |
--- |
句号Period (fullstop) |
/ |
/ |
--- |
斜杠Solidus (slash) |
0 |
0 |
--- |
数字0 Digit 0 |
1 |
1 |
--- |
数字1 Digit 1 |
2 |
2 |
--- |
数字2 Digit 2 |
3 |
3 |
--- |
数字3 Digit 3 |
4 |
4 |
--- |
数字4 Digit 4 |
5 |
5 |
--- |
数字5 Digit 5 |
6 |
6 |
--- |
数字6 Digit 6 |
7 |
7 |
--- |
数字7 Digit 7 |
8 |
8 |
--- |
数字8 Digit 8 |
9 |
9 |
--- |
数字9 Digit 9 |
: |
: |
--- |
冒号Colon |
; |
; |
--- |
分号Semicolon |
< |
< |
< |
小于号Less than |
= |
= |
--- |
等于符号Equals sign |
> |
> |
> |
大于号Greater than |
? |
? |
--- |
问号Question mark |
@ |
@ |
--- |
Commercial at |
A |
A |
--- |
大写A Capital A |
B |
B |
--- |
大写B Capital B |
C |
C |
--- |
大写C Capital C |
D |
D |
--- |
大写D Capital D |
E |
E |
--- |
大写E Capital E |
F |
F |
--- |
大写F Capital F |
G |
G |
--- |
大写G Capital G |
H |
H |
--- |
大写H Capital H |
I |
I |
--- |
大写J Capital I |
J |
J |
--- |
大写K Capital J |
K |
K |
--- |
大写L Capital K |
L |
L |
--- |
大写K Capital L |
M |
M |
--- |
大写M Capital M |
N |
N |
--- |
大写N Capital N |
O |
O |
--- |
大写O Capital O |
P |
P |
--- |
大写P Capital P |
Q |
Q |
--- |
大写Q Capital Q |
R |
R |
--- |
大写R Capital R |
S |
S |
--- |
大写S Capital S |
T |
T |
--- |
大写T Capital T |
U |
U |
--- |
大写U Capital U |
V |
V |
--- |
大写V Capital V |
W |
W |
--- |
大写W Capital W |
X |
X |
--- |
大写X Capital X |
Y |
Y |
--- |
大写Y Capital Y |
Z |
Z |
--- |
大写Z Capital Z |
[ |
[ |
--- |
中括号左边部分Left square bracket |
\ |
\ |
--- |
反斜杠Reverse solidus (backslash) |
] |
] |
--- |
中括号右边部分Right square bracket |
^ |
^ |
--- |
Caret |
_ |
_ |
--- |
下划线Horizontal bar (underscore) |
` |
` |
--- |
尖重音符Acute accent |
a |
a |
--- |
小写a Small a |
b |
b |
--- |
小写b Small b |
c |
c |
--- |
小写c Small c |
d |
d |
--- |
小写d Small d |
e |
e |
--- |
小写e Small e |
f |
f |
--- |
小写f Small f |
g |
g |
--- |
小写g Small g |
h |
h |
--- |
小写h Small h |
i |
i |
--- |
小写i Small i |
j |
j |
--- |
小写j Small j |
k |
k |
--- |
小写k Small k |
l |
l |
--- |
小写l Small l |
m |
m |
--- |
小写m Small m |
n |
n |
--- |
小写n Small n |
o |
o |
--- |
小写o Small o |
p |
p |
--- |
小写p Small p |
q |
q |
--- |
小写q Small q |
r |
r |
--- |
小写r Small r |
s |
s |
--- |
小写s Small s |
t |
t |
--- |
小写t Small t |
u |
u |
--- |
小写u Small u |
v |
v |
--- |
小写v Small v |
w |
w |
--- |
小写w Small w |
x |
x |
--- |
小写x Small x |
y |
y |
--- |
小写y Small y |
z |
z |
--- |
小写z Small z |
{ |
{ |
--- |
大括号左边部分Left curly brace |
| |
| |
--- |
竖线Vertical bar |
} |
} |
--- |
大括号右边部分Right curly brace |
~ |
~ |
--- |
Tilde |
--- |
 |
--- |
未使用Unused |
|
  |
|
空格Nonbreaking space |
? |
¡ |
¡ |
Inverted exclamation |
¢ |
¢ |
¢ |
货币分标志Cent sign |
£ |
£ |
£ |
英镑标志Pound sterling |
¤ |
¤ |
¤ |
通用货币标志General currency sign |
¥ |
¥ |
¥ |
日元标志Yen sign |
| |
¦ |
¦ or &brkbar; |
断竖线Broken vertical bar |
§ |
§ |
§ |
分节号Section sign |
¨ |
¨ |
¨ or ¨ |
变音符号Umlaut |
? |
© |
© |
版权标志Copyright |
a |
ª |
ª |
Feminine ordinal |
? |
« |
« |
Left angle quote, guillemet left |
? |
¬ |
¬ |
Not sign |
|
­ |
­ |
Soft hyphen |
? |
® |
® |
注册商标标志Registered trademark |
ˉ |
¯ |
¯ or &hibar; |
长音符号Macron accent |
° |
° |
° |
度数标志Degree sign |
± |
± |
± |
加或减Plus or minus |
2 |
² |
² |
上标2 Superscript two |
3 |
³ |
³ |
上标3 Superscript three |
′ |
´ |
´ |
尖重音符Acute accent |
μ |
µ |
µ |
Micro sign |
? |
¶ |
¶ |
Paragraph sign |
· |
· |
· |
Middle dot |
? |
¸ |
¸ |
Cedilla |
1 |
¹ |
¹ |
上标1 Superscript one |
o |
º |
º |
Masculine ordinal |
? |
» |
» |
Right angle quote, guillemet right |
? |
¼ |
¼ |
四分之一Fraction one-fourth |
? |
½ |
½ |
二分之一Fraction one-half |
? |
¾ |
¾ |
四分之三Fraction three-fourths |
? |
¿ |
¿ |
Inverted question mark |
à |
À |
À |
Capital A, grave accent |
á |
Á |
Á |
Capital A, acute accent |
? |
 |
 |
Capital A, circumflex |
? |
à |
à |
Capital A, tilde |
? |
Ä |
Ä |
Capital A, di?esis / umlaut |
? |
Å |
Å |
Capital A, ring |
? |
Æ |
Æ |
Capital AE ligature |
? |
Ç |
Ç |
Capital C, cedilla |
è |
È |
È |
Capital E, grave accent |
é |
É |
É |
Capital E, acute accent |
ê |
Ê |
Ê |
Capital E, circumflex |
? |
Ë |
Ë |
Capital E, di?esis / umlaut |
ì |
Ì |
Ì |
Capital I, grave accent |
í |
Í |
Í |
Capital I, acute accent |
? |
Î |
Î |
Capital I, circumflex |
? |
Ï |
Ï |
Capital I, di?esis / umlaut |
D |
Ð |
Ð |
Capital Eth, Icelandic |
? |
Ñ |
Ñ |
Capital N, tilde |
ò |
Ò |
Ò |
Capital O, grave accent |
ó |
Ó |
Ó |
Capital O, acute accent |
? |
Ô |
Ô |
Capital O, circumflex |
? |
Õ |
Õ |
Capital O, tilde |
? |
Ö |
Ö |
Capital O, di?esis / umlaut |
× |
× |
× |
乘号Multiply sign |
? |
Ø |
Ø |
Capital O, slash |
ù |
Ù |
Ù |
Capital U, grave accent |
ú |
Ú |
Ú |
Capital U, acute accent |
? |
Û |
Û |
Capital U, circumflex |
ü |
Ü |
Ü |
Capital U, di?esis / umlaut |
Y |
Ý |
Ý |
Capital Y, acute accent |
T |
Þ |
Þ |
Capital Thorn, Icelandic |
? |
ß |
ß |
Small sharp s, German sz |
à |
à |
à |
Small a, grave accent |
á |
á |
á |
Small a, acute accent |
a |
â |
â |
Small a, circumflex |
? |
ã |
ã |
Small a, tilde |
? |
ä |
ä |
Small a, di?esis / umlaut |
? |
å |
å |
Small a, ring |
? |
æ |
æ |
Small ae ligature |
? |
ç |
ç |
Small c, cedilla |
è |
è |
è |
Small e, grave accent |
é |
é |
é |
Small e, acute accent |
ê |
ê |
ê |
Small e, circumflex |
? |
ë |
ë |
Small e, di?esis / umlaut |
ì |
ì |
ì |
Small i, grave accent |
í |
í |
í |
Small i, acute accent |
? |
î |
î |
Small i, circumflex |
? |
ï |
ï |
Small i, di?esis / umlaut |
e |
ð |
ð |
Small eth, Icelandic |
? |
ñ |
ñ |
Small n, tilde |
ò |
ò |
ò |
Small o, grave accent |
ó |
ó |
ó |
Small o, acute accent |
? |
ô |
ô |
Small o, circumflex |
? |
õ |
õ |
Small o, tilde |
? |
ö |
ö |
Small o, di?esis / umlaut |
÷ |
÷ |
÷ |
除号Division sign |
? |
ø |
ø |
Small o, slash |
ù |
ù |
ù |
Small u, grave accent |
ú |
ú |
ú |
Small u, acute accent |
? |
û |
û |
Small u, circumflex |
ü |
ü |
ü |
Small u, di?esis / umlaut |
y |
ý |
ý |
Small y, acute accent |
t |
þ |
þ |
Small thorn, Icelandic |
? |
ÿ |
ÿ |
Small y, umlaut |
symbols, mathematical symbols, and Greek letters
?
|
ƒ |
Α
|
Α |
Β
|
Β |
Γ
|
Γ |
Δ
|
Δ |
Ε
|
Ε |
Ζ
|
Ζ |
Η
|
Η |
Θ
|
Θ |
Ι
|
Ι |
Κ
|
Κ |
Λ
|
Λ |
Μ
|
Μ |
Ν
|
Ν |
Ξ
|
Ξ |
Ο
|
Ο |
Π
|
Π |
Ρ
|
Ρ |
Σ
|
Σ |
Τ
|
Τ |
Υ
|
Υ |
Φ
|
Φ |
Χ
|
Χ |
Ψ
|
Ψ |
Ω
|
Ω |
α
|
α |
β
|
β |
γ
|
γ |
δ
|
δ |
ε
|
ε |
ζ
|
ζ |
η
|
η |
θ
|
θ |
ι
|
ι |
κ
|
κ |
λ
|
λ |
μ
|
μ |
ν
|
ν |
ξ
|
ξ |
ο
|
ο |
π
|
π |
ρ
|
ρ |
?
|
ς |
σ
|
σ |
τ
|
τ |
υ
|
υ |
φ
|
φ |
χ
|
χ |
ψ
|
ψ |
ω
|
ω |
?
|
ϑ |
?
|
ϒ |
?
|
ϖ |
?
|
• |
…
|
… |
′
|
′ |
″
|
″ |
 ̄
|
‾ |
?
|
⁄ |
?
|
℘ |
?
|
ℑ |
?
|
ℜ |
?
|
™ |
?
|
ℵ |
←
|
← |
↑
|
↑ |
→
|
→ |
↓
|
↓ |
?
|
↔ |
?
|
↵ |
?
|
⇐ |
?
|
⇑ |
?
|
⇒ |
?
|
⇓ |
?
|
⇔ |
?
|
∀ |
?
|
∂ |
?
|
∃ |
?
|
∅ |
?
|
∇ |
∈
|
∈ |
?
|
∉ |
?
|
∋ |
∏
|
∏ |
∑
|
∑ |
?
|
− |
?
|
∗ |
√
|
√ |
∝
|
∝ |
∞
|
∞ |
∠
|
∠ |
∧
|
∧ |
∨
|
∨ |
∩
|
∩ |
∪
|
∪ |
∫
|
∫ |
∴
|
∴ |
~
|
∼ |
?
|
≅ |
≈
|
≈ |
≠
|
≠ |
≡
|
≡ |
≤
|
≤ |
≥
|
≥ |
?
|
⊂ |
?
|
⊃ |
?
|
⊄ |
?
|
⊆ |
?
|
⊇ |
⊕
|
⊕ |
?
|
⊗ |
⊥
|
⊥ |
?
|
⋅ |
?
|
⌈ |
?
|
⌉ |
?
|
⌊ |
?
|
⌋ |
?
|
⟨ |
?
|
⟩ |
?
|
◊ |
?
|
♠ |
?
|
♣ |
?
|
♥ |
?
|
♦ |
markup-significant and internationalization characters
“
|
" |
&
|
& |
<
|
< |
>
|
> |
?
|
Œ |
?
|
œ |
?
|
Š |
?
|
š |
?
|
Ÿ |
?
|
ˆ |
?
|
˜ |
?
|
  |
?
|
  |
?
|
  |
?
|
‌ |
?
|
‍ |
?
|
‎ |
?
|
‏ |
–
|
– |
—
|
— |
‘
|
‘ |
’
|
’ |
?
|
‚ |
“
|
“ |
”
|
” |
?
|
„ |
?
|
† |
?
|
‡ |
‰
|
‰ |
?
|
‹ |
?
|
› |
?/STRONG>
|
€ |