--- title: 'RangeError: argument is not a valid code point' slug: Web/JavaScript/Reference/Errors/Not_a_codepoint translation_of: Web/JavaScript/Reference/Errors/Not_a_codepoint ---
RangeError: {0} is not a valid code point (Firefox) RangeError: Invalid code point {0} (Chrome)
{{jsxref("RangeError")}}
El metodo {{jsxref("String.fromCodePoint()")}} acepta solamente code point validos.
Un code point es un valor en el conjunto de caracteres Unicode; esto es, un rango de enteros que va desde 0
a 0x10FFFF
.
Usando valores {{jsxref("NaN")}}, enteros negativos (-1
), no enteros (3.14
), o valores mayores a 0x10FFFF
(1114111
) no trabajarian con este metodo.
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
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"