lowSurrogate
Returns the trailing surrogate (a low surrogate code unit) of the surrogate pair representing the specified supplementary character (Unicode code point) in the UTF-16 encoding. If the specified character is not a Character.html#supplementary, an unspecified char is returned.
If .isSupplementaryCodePoint is true, then .isLowSurrogate(lowSurrogate(x)) and .toCodePoint(.highSurrogate(x), lowSurrogate(x)) == x are also always true.
Return
the trailing surrogate code unit used to represent the character in the UTF-16 encoding
Since
1.7
Parameters
codePoint
a supplementary character (Unicode code point)