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Message
RangeError: Invalid code point {0} (Edge) RangeError: {0} is not a valid code point (Firefox) RangeError: Invalid code point {0} (Chrome)
Error type
What went wrong?
String.fromCodePoint()
throws this error when passed NaN
values, negative Integers (-1), non-Integers (5.4), or values larger than 0x10FFFF (1114111).
A code point is a value in the Unicode codespace; that is, the range of integers from 0
to 0x10FFFF
.
Examples
Invalid cases
String.fromCodePoint('_'); // RangeError String.fromCodePoint(Infinity); // RangeError String.fromCodePoint(-1); // RangeError String.fromCodePoint(3.14); // RangeError String.fromCodePoint(3e-2); // RangeError String.fromCodePoint(NaN); // RangeError
Valid cases
String.fromCodePoint(42); // "*" String.fromCodePoint(65, 90); // "AZ" String.fromCodePoint(0x404); // "\u0404" String.fromCodePoint(0x2F804); // "\uD87E\uDC04" String.fromCodePoint(194564); // "\uD87E\uDC04" String.fromCodePoint(0x1D306, 0x61, 0x1D307) // "\uD834\uDF06a\uD834\uDF07"