![]() ![]() How you want to compare the values depends on whether you want to support the full range of Unicode values. If your codepoint lies in the supplementary range, then the array will be two chars in length. Note methods like Character.toChars(int) that return an array of chars. The Character class contains many useful methods for working with Unicode code points. For example, Character.isLetter(0x2F81A) returns true because the code point value represents a letter (a CJK ideograph).Ĭasting the char to an int, as you do in your sample, works fine though. The methods that accept an int value support all Unicode characters, including supplementary characters.For example, Character.isLetter('\uD840') returns false, even though this specific value if followed by any low-surrogate value in a string would represent a letter. JavaScript uses the UTF-16 encoding of the Unicode character set, and JavaScript strings are sequences of. ![]() They treat char values from the surrogate ranges as undefined characters. Characters, Codepoints, and JavaScript Strings.
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