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@ -44,7 +44,7 @@ JavaScript allows us to insert a character into a string by specifying its hexad
## Surrogate pairs
All frequently used characters have 2-byte codes (4 hex digits). Letters in most European languages, numbers, and the basic unified CJK ideograph sets (CJK, from Chinese, Japanese, and Korean writing systems), have a 2-byte representation.
All frequently used characters have 2-byte codes (4 hex digits). Letters in most European languages, numbers, and the basic unified CJK ideograph sets (CJK -- from Chinese, Japanese, and Korean writing systems), have a 2-byte representation.
Initially, JavaScript was based on UTF-16 encoding that only allowed 2 bytes per character. But 2 bytes only allow 65536 combinations and that's not enough for every possible symbol of Unicode.