摘要：有些字符在里有特別的含義，比如小于號(hào)就表示的開(kāi)始，這個(gè)小于號(hào)是不顯示在我們最終看到的網(wǎng)頁(yè)里的。如何顯示空格通常情況下，會(huì)自動(dòng)截去多余的空格。

有些字符在HTML里有特別的含義，比如小于號(hào)<就表示HTML Tag的開(kāi)始，這個(gè)小于號(hào)是不顯示在我們最終看到的網(wǎng)頁(yè)里的。那如果我們希望在網(wǎng)頁(yè)中顯示一個(gè)小于號(hào)，該怎么辦呢？這就要說(shuō)到HTML字符實(shí)體(HTML Character Entities)了。

有些字符在HTML里有特別的含義，比如小于號(hào)<就表示HTML Tag的開(kāi)始，這個(gè)小于號(hào)是不顯示在我們最終看到的網(wǎng)頁(yè)里的。那如果我們希望在網(wǎng)頁(yè)中顯示一個(gè)小于號(hào)，該怎么辦呢？

這就要說(shuō)到HTML字符實(shí)體(HTML Character Entities)了。

一個(gè)字符實(shí)體(Character Entity)分成三部分：第一部分是一個(gè)&符號(hào)，英文叫ampersand；第二部分是實(shí)體(Entity)名字或者是#加上實(shí)體(Entity)編號(hào)；第三部分是一個(gè)分號(hào)。

比如，要顯示小于號(hào)，就可以寫(xiě)<或者<。

用實(shí)體(Entity)名字的好處是比較好理解，一看lt，大概就猜出是less than的意思，但是其劣勢(shì)在于并不是所有的瀏覽器都支持最新的Entity名字。而實(shí)體(Entity)編號(hào)，各種瀏覽器都能處理。

注意：Entity是區(qū)分大小寫(xiě)的。

通常情況下，HTML會(huì)自動(dòng)截去多余的空格。不管你加多少空格，都被看做一個(gè)空格。比如你在兩個(gè)字之間加了10個(gè)空格，HTML會(huì)截去9個(gè)空格，只保留一個(gè)。為了在網(wǎng)頁(yè)中增加空格，你可以使用 表示空格。

顯示結(jié)果    說(shuō)明             Entity Name        Entity Number
         顯示一個(gè)空格                       
<        小于             <                <
>        大于             >                >
&        &符號(hào)            &            &
"        雙引號(hào)          "            "
"       單引號(hào)                           ' 

結(jié)果   說(shuō)明      Entity Name    Entity Number
?     版權(quán)       ©         ©
?     注冊(cè)商標(biāo)    ®          ®
×     乘號(hào)       ×        ×
÷     除號(hào)       ÷       ÷

字符 十進(jìn)制字符編號(hào)  實(shí)體名字    說(shuō)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
--- 
 --- 換行Line feed
---  --- 未使用Unused
---  --- 未使用Unused
--- 
 --- 回車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
! ! --- 驚嘆號(hào)Exclamation mark
" " "  雙引號(hào)Quotation mark
# # --- 數(shù)字標(biāo)志Number sign
$ $ --- 美元標(biāo)志Dollar sign
% % --- 百分號(hào)Percent sign
& & & Ampersand
" ' --- 單引號(hào)Apostrophe
( ( --- 小括號(hào)左邊部分Left parenthesis
) ) --- 小括號(hào)右邊部分Right parenthesis
* * --- 星號(hào)Asterisk
+ + --- 加號(hào)Plus sign
, , --- 逗號(hào)Comma
- - --- 連字號(hào)Hyphen
. . --- 句號(hào)Period (fullstop)
/ / --- 斜杠Solidus (slash)
0 0 --- 數(shù)字0 Digit 0
1 1 --- 數(shù)字1 Digit 1
2 2 --- 數(shù)字2 Digit 2
3 3 --- 數(shù)字3 Digit 3
4 4 --- 數(shù)字4 Digit 4
5 5 --- 數(shù)字5 Digit 5
6 6 --- 數(shù)字6 Digit 6
7 7 --- 數(shù)字7 Digit 7
8 8 --- 數(shù)字8 Digit 8
9 9 --- 數(shù)字9 Digit 9
: : --- 冒號(hào)Colon
; ; --- 分號(hào)Semicolon
< < <  小于號(hào)Less than
= = --- 等于符號(hào)Equals sign
> > >  大于號(hào)Greater than
? ? --- 問(wèn)號(hào)Question mark
@ @ --- Commercial at
A A --- 大寫(xiě)A Capital A
B B --- 大寫(xiě)B(tài) Capital B
C C --- 大寫(xiě)C Capital C
D D --- 大寫(xiě)D Capital D
E E --- 大寫(xiě)E Capital E
F F --- 大寫(xiě)F Capital F
G G --- 大寫(xiě)G Capital G
H H --- 大寫(xiě)H Capital H
I I --- 大寫(xiě)J Capital I
J J --- 大寫(xiě)K Capital J
K K --- 大寫(xiě)L Capital K
L L --- 大寫(xiě)K Capital L
M M --- 大寫(xiě)M Capital M
N N --- 大寫(xiě)N Capital N
O O --- 大寫(xiě)O Capital O
P P --- 大寫(xiě)P Capital P
Q Q --- 大寫(xiě)Q Capital Q
R R --- 大寫(xiě)R Capital R
S S --- 大寫(xiě)S Capital S
T T --- 大寫(xiě)T Capital T
U U --- 大寫(xiě)U Capital U
V V --- 大寫(xiě)V Capital V
W W --- 大寫(xiě)W Capital W
X X --- 大寫(xiě)X Capital X
Y Y --- 大寫(xiě)Y Capital Y
Z Z --- 大寫(xiě)Z Capital Z
[ [ --- 中括號(hào)左邊部分Left square bracket
 \ --- 反斜杠Reverse solidus (backslash)
] ] --- 中括號(hào)右邊部分Right square bracket
^ ^ --- Caret
_ _ --- 下劃線Horizontal bar (underscore)
` ` --- 尖重音符Acute accent
a a --- 小寫(xiě)a Small a
b b --- 小寫(xiě)b Small b
c c --- 小寫(xiě)c Small c
d d  --- 小寫(xiě)d Small d
e e  --- 小寫(xiě)e Small e
f f  --- 小寫(xiě)f Small f
g g  --- 小寫(xiě)g Small g
h h  --- 小寫(xiě)h Small h
i i  --- 小寫(xiě)i Small i
j j  --- 小寫(xiě)j Small j
k k  --- 小寫(xiě)k Small k
l l  --- 小寫(xiě)l Small l
m m  --- 小寫(xiě)m Small m
n n  --- 小寫(xiě)n Small n
o o  --- 小寫(xiě)o Small o
p p  --- 小寫(xiě)p Small p
q q  --- 小寫(xiě)q Small q
r r  --- 小寫(xiě)r Small r
s s  --- 小寫(xiě)s Small s
t t  --- 小寫(xiě)t Small t
u u  --- 小寫(xiě)u Small u
v v  --- 小寫(xiě)v Small v
w w  --- 小寫(xiě)w Small w
x x  --- 小寫(xiě)x Small x
y y  --- 小寫(xiě)y Small y
z z  --- 小寫(xiě)z Small z
{ {  --- 大括號(hào)左邊部分Left curly brace
| |  --- 豎線Vertical bar
} }  --- 大括號(hào)右邊部分Right curly brace
~ ~  --- Tilde
---   --- 未使用Unused
        空格Nonbreaking space
? ¡  ¡ Inverted exclamation
￠ ¢  ¢  貨幣分標(biāo)志Cent sign
￡ £  £ 英鎊標(biāo)志Pound sterling
¤ ¤  ¤  通用貨幣標(biāo)志General currency sign
￥ ¥  ¥ 日元標(biāo)志Yen sign
| ¦  ¦ or &brkbar;  斷豎線Broken vertical bar
§ §  §  分節(jié)號(hào)Section sign
¨ ¨  ¨ or ¨  變音符號(hào)Umlaut
? ©  ©  版權(quán)標(biāo)志Copyright
a ª  ª  Feminine ordinal
? «  « Left angle quote, guillemet left
? ¬  ¬  Not sign
  ­  ­ Soft hyphen
? ®  ® 注冊(cè)商標(biāo)標(biāo)志Registered trademark
ˉ ¯  ¯ or &hibar; 長(zhǎng)音符號(hào)Macron accent
° °  ° 度數(shù)標(biāo)志Degree sign
± ±  ±  加或減Plus or minus
2 ²  ²  上標(biāo)2 Superscript two
3 ³  ³  上標(biāo)3 Superscript three
′ ´  ´ 尖重音符Acute accent
μ µ  µ Micro sign
? ¶  ¶  Paragraph sign
· ·  ·  Middle dot
? ¸  ¸ Cedilla
1 ¹  ¹  上標(biāo)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
? Â  Â Capital A, circumflex
? Ã  Ã  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
× ×  × 乘號(hào)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
÷ ÷  ÷  除號(hào)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

轉(zhuǎn)載文章：
實(shí)體字符對(duì)照表