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This article introduces the relevant knowledge of "what is the HTML character set?". In the operation of practical cases, many people will encounter such a dilemma. Then let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Preface

To display HTML pages correctly, browsers must know which character set to use.

The early character set used on the World wide Web was ASCII. ASCII supports 0-9 numbers, uppercase and lowercase English alphabets, and some special characters.

Because the characters used in many countries do not belong to ASCII, the default character set for modern browsers is ISO-8859-1.

ISO character set

The ISO character set is a standard character set defined by the International Standards Organization (ISO) for different alphabet / languages. The following table shows the different character sets used around the world:

Character set description use range ISO-8859-1Latin alphabet part 1 North America, Western Europe, Latin America, Caribbean, Canada, Africa ISO-8859-2

Latin alphabet part 2 Eastern European ISO-8859-3Latin alphabet part 3SE Europe, Esperanto, other miscellaneous ISO-8859-4Latin alphabet part 4 Scandinavian / Baltic (and other parts not included in ISO-8859-1) ISO-8859-5Latin/Cyrillic part 5 uses the language of the ancient Slavic alphabet For example, Bulgarian, Belarusian, Russian, Macedonian ISO-8859-6Latin/Arabic part 6 languages using Arabic letters ISO-8859-7Latin/Arabic part 7

Modern Greek, and the mathematical symbol ISO-8859-8Latin/Hebrew part 8 derived from Greek, uses the Hebrew language ISO-8859-9Latin 5 part 9 Turkish ISO-8859-10Latin 6 Lapland, Germanic, Eskimo Nordic ISO-8859-15Latin 9 (aka Latin 0) similar to ISO 8859-1 Euro symbols and other characters replace some of the less used symbols ISO-2022-JPLatin/Japanese part 1 native language ISO-2022-JP-2Latin/Japanese part 2 native language ISO-2022-KRLatin/Korean part 1 Korean Unicode standard

Unicode (Unicode, Universal Code, single Code) is an industry standard in the field of computer science, created by the Unicode Alliance, including character sets, coding schemes, and so on. Unicode is produced to solve the limitations of traditional character coding schemes. It sets a unified and unique binary coding for each character in each language to meet the requirements of cross-language and cross-platform text conversion and processing.

Unicode can be compatible with different character sets. The most commonly used coding methods are UTF-8 and UTF-16.

UTF-8

Characters in UTF8 can be 1-4 bytes long. UTF-8 can represent any character in the Unicode standard. UTF-8 is backward compatible with ASCII. UTF-8 is the preferred coding for web pages and e-mail.

UTF-16

The 16-bit Unicode conversion format is a Unicode variable character encoding that encodes all Unicode instruction tables. UTF-16 is mainly used in operating systems and environments, such as Microsoft's Windows 2000/XP/2003/Vista/CE and Java and .NET bytecode environments.

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