Syntax : getBrowserLANG()






  function getBrowserLANG(){
    if(document.all)                       //e4,e5,e6,o6,o7用
      return navigator.browserLanguage
    else if(document.layers)               //n4用
      return navigator.language
    else if(document.getElementById)       //n6,n7,m1,s1用
      return navigator.language.substr(0,2)
  }




Example

<script type='text/javascript'>
<!--

  function getBrowserLANG(){
    if(document.all)                       //e4,e5,e6,o6,o7用
      return navigator.browserLanguage
    else if(document.layers)               //n4用
      return navigator.language
    else if(document.getElementById)       //n6,n7,m1,s1用
      return navigator.language.substr(0,2)
  }

//-->
</script>

<!--↓このリンクをクリックすると/////////////////////////////////-->
<a href="javascript:alert(getBrowserLANG()+'です')">
このブラウザの言語は?
</a>

言語名(ISO 639) * 小文字で2文字

aa Afar
ab Abkhazian
af Afrikaans
am Amharic
ar Arabic
as Assamese
ay Aymara
az Azerbaijani

ba Bashkir
be Byelorussian
bg Bulgarian
bh Bihari
bi Bislama
bn Bengali; Bangla
bo Tibetan
br Breton

ca Catalan
co Corsican
cs Czech
cy Welsh

da Danish
de German
dz Bhutani

el Greek
en English
eo Esperanto
es Spanish
et Estonian
eu Basque

fa Persian
fi Finnish
fj Fiji
fo Faroese
fr French
fy Frisian

ga Irish
gd Scots Gaelic
gl Galician
gn Guarani
gu Gujarati

ha Hausa
he Hebrew (formerly iw)
hi Hindi
hr Croatian
hu Hungarian
hy Armenian

ia Interlingua
id Indonesian (formerly in)
ie Interlingue
ik Inupiak
is Icelandic
it Italian
iu Inuktitut

ja Japanese
jw Javanese

ka Georgian
kk Kazakh
kl Greenlandic
km Cambodian
kn Kannada
ko Korean
ks Kashmiri
ku Kurdish
ky Kirghiz

la Latin
ln Lingala
lo Laothian
lt Lithuanian
lv Latvian, Lettish

mg Malagasy
mi Maori
mk Macedonian
ml Malayalam
mn Mongolian
mo Moldavian
mr Marathi
ms Malay
mt Maltese
my Burmese

na Nauru
ne Nepali
nl Dutch
no Norwegian

oc Occitan
om (Afan) Oromo
or Oriya

pa Punjabi
pl Polish
ps Pashto, Pushto
pt Portuguese

qu Quechua

rm Rhaeto-Romance
rn Kirundi
ro Romanian
ru Russian
rw Kinyarwanda

sa Sanskrit
sd Sindhi
sg Sangho
sh Serbo-Croatian
si Sinhalese
sk Slovak
sl Slovenian
sm Samoan
sn Shona
so Somali
sq Albanian
sr Serbian
ss Siswati
st Sesotho
su Sundanese
sv Swedish
sw Swahili

ta Tamil
te Telugu
tg Tajik
th Thai
ti Tigrinya
tk Turkmen
tl Tagalog
tn Setswana
to Tonga
tr Turkish
ts Tsonga
tt Tatar
tw Twi

ug Uighur
uk Ukrainian
ur Urdu
uz Uzbek

vi Vietnamese
vo Volapuk

wo Wolof

xh Xhosa

yi Yiddish (formerly ji)
yo Yoruba

za Zhuang
zh Chinese
zu Zulu
 

地域名( ISO 3166 ) * 大文字で2文字

AF AFGHANISTAN
AL ALBANIA
DZ ALGERIA
AS AMERICAN SAMOA
AD ANDORRA
AO ANGOLA
AI ANGUILLA
AQ ANTARCTICA
AG ANTIGUA AND BARBUDA
AR ARGENTINA
AM ARMENIA
AW ARUBA
AU AUSTRALIA
AT AUSTRIA
AZ AZERBAIJAN
BS BAHAMAS
BH BAHRAIN
BD BANGLADESH
BB BARBADOS
BY BELARUS
BE BELGIUM
BZ BELIZE
BJ BENIN
BM BERMUDA
BT BHUTAN
BO BOLIVIA
BA BOSNIA AND HERZEGOVINA
BW BOTSWANA
BV BOUVET ISLAND
BR BRAZIL
IO BRITISH INDIAN OCEAN TERRITORY
BN BRUNEI DARUSSALAM
BG BULGARIA
BF BURKINA FASO
BI BURUNDI
KH CAMBODIA
CM CAMEROON
CA CANADA
CV CAPE VERDE
KY CAYMAN ISLANDS
CF CENTRAL AFRICAN REPUBLIC
TD CHAD
CL CHILE
CN CHINA
CX CHRISTMAS ISLAND
CC COCOS (KEELING) ISLANDS
CO COLOMBIA
KM COMOROS
CG CONGO
CD CONGO, THE DEMOCRATIC REPUBLIC OF THE
CK COOK ISLANDS
CR COSTA RICA
CI COTE D'IVOIRE
HR CROATIA
CU CUBA
CY CYPRUS
CZ CZECH REPUBLIC
DK DENMARK
DJ DJIBOUTI
DM DOMINICA
DO DOMINICAN REPUBLIC
TP EAST TIMOR
EC ECUADOR
EG EGYPT
SV EL SALVADOR
GQ EQUATORIAL GUINEA
ER ERITREA
EE ESTONIA
ET ETHIOPIA
FK FALKLAND ISLANDS (MALVINAS)
FO FAROE ISLANDS
FJ FIJI
FI FINLAND
FR FRANCE
GF FRENCH GUIANA
PF FRENCH POLYNESIA
TF FRENCH SOUTHERN TERRITORIES
GA GABON
GM GAMBIA
GE GEORGIA
DE GERMANY
GH GHANA
GI GIBRALTAR
GR GREECE
GL GREENLAND
GD GRENADA
GP GUADELOUPE
GU GUAM
GT GUATEMALA
GN GUINEA
GW GUINEA-BISSAU
GY GUYANA
HT HAITI
HM HEARD ISLAND AND MCDONALD ISLANDS
VA HOLY SEE (VATICAN CITY STATE)
HN HONDURAS
HK HONG KONG
HU HUNGARY
IS ICELAND
IN INDIA
ID INDONESIA
IR IRAN, ISLAMIC REPUBLIC OF
IQ IRAQ
IE IRELAND
IL ISRAEL
IT ITALY
JM JAMAICA
JP JAPAN
JO JORDAN
KZ KAZAKSTAN
KE KENYA
KI KIRIBATI
KP KOREA, DEMOCRATIC PEOPLE'S REPUBLIC OF
KR KOREA, REPUBLIC OF
KW KUWAIT
KG KYRGYZSTAN
LA LAO PEOPLE'S DEMOCRATIC REPUBLIC
LV LATVIA
LB LEBANON
LS LESOTHO
LR LIBERIA
LY LIBYAN ARAB JAMAHIRIYA
LI LIECHTENSTEIN
LT LITHUANIA
LU LUXEMBOURG
MO MACAU
MK MACEDONIA, THE FORMER YUGOSLAV REPUBLIC OF
MG MADAGASCAR
MW MALAWI
MY MALAYSIA
MV MALDIVES
ML MALI
MT MALTA
MH MARSHALL ISLANDS
MQ MARTINIQUE
MR MAURITANIA
MU MAURITIUS
YT MAYOTTE
MX MEXICO
FM MICRONESIA, FEDERATED STATES OF
MD MOLDOVA, REPUBLIC OF
MC MONACO
MN MONGOLIA
MS MONTSERRAT
MA MOROCCO
MZ MOZAMBIQUE
MM MYANMAR
NA NAMIBIA
NR NAURU
NP NEPAL
NL NETHERLANDS
AN NETHERLANDS ANTILLES
NC NEW CALEDONIA
NZ NEW ZEALAND
NI NICARAGUA
NE NIGER
NG NIGERIA
NU NIUE
NF NORFOLK ISLAND
MP NORTHERN MARIANA ISLANDS
NO NORWAY
OM OMAN
PK PAKISTAN
PW PALAU
PS PALESTINIAN TERRITORY, OCCUPIED
PA PANAMA
PG PAPUA NEW GUINEA
PY PARAGUAY
PE PERU
PH PHILIPPINES
PN PITCAIRN
PL POLAND
PT PORTUGAL
PR PUERTO RICO
QA QATAR
RE REUNION
RO ROMANIA
RU RUSSIAN FEDERATION
RW RWANDA
SH SAINT HELENA
KN SAINT KITTS AND NEVIS
LC SAINT LUCIA
PM SAINT PIERRE AND MIQUELON
VC SAINT VINCENT AND THE GRENADINES
WS SAMOA
SM SAN MARINO
ST SAO TOME AND PRINCIPE
SA SAUDI ARABIA
SN SENEGAL
SC SEYCHELLES
SL SIERRA LEONE
SG SINGAPORE
SK SLOVAKIA
SI SLOVENIA
SB SOLOMON ISLANDS
SO SOMALIA
ZA SOUTH AFRICA
GS SOUTH GEORGIA AND THE SOUTH SANDWICH ISLANDS
ES SPAIN
LK SRI LANKA
SD SUDAN
SR SURINAME
SJ SVALBARD AND JAN MAYEN
SZ SWAZILAND
SE SWEDEN
CH SWITZERLAND
SY SYRIAN ARAB REPUBLIC
TW TAIWAN, PROVINCE OF CHINA
TJ TAJIKISTAN
TZ TANZANIA, UNITED REPUBLIC OF
TH THAILAND
TG TOGO
TK TOKELAU
TO TONGA
TT TRINIDAD AND TOBAGO
TN TUNISIA
TR TURKEY
TM TURKMENISTAN
TC TURKS AND CAICOS ISLANDS
TV TUVALU
UG UGANDA
UA UKRAINE
AE UNITED ARAB EMIRATES
GB UNITED KINGDOM
US UNITED STATES
UM UNITED STATES MINOR OUTLYING ISLANDS
UY URUGUAY
UZ UZBEKISTAN
VU VANUATU
Vatican City State see HOLY SEE
VE ELA
VN VIET NAM
VG VIRGIN ISLANDS, BRITISH
VI VIRGIN ISLANDS, U.S.
WF WALLIS AND FUTUNA
EH WESTERN SAHARA
YE YEMEN
YU YUGOSLAVIA
Zaire see CONGO, THE DEMOCRATIC REPUBLIC OF THE
ZM ZAMBIA
ZW ZIMBABWE