RangeError: argument is not a valid code point
Pesan
RangeError: Invalid code point {0} (Edge) RangeError: {0} is not a valid code point (Firefox) RangeError: Invalid code point {0} (Chrome)
Tipe error
Apa yang salah?
String.fromCodePoint()
throws this error when passed NaN
values, negative Integers (-1), non-Integers (5.4), or values larger than 0x10FFFF (1114111).
Satu poin kode ialah satu nilai dalam codespace Unicode; yaitu, kisaran integer dari 0
hingga 0x10FFFF
.
Contoh
Kasus tak nvalid
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
Kasus valid
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"