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RangeError: argument is not a valid code point - JavaScript | MDN
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RangeError: argument is not a valid code point
Message
RangeError: Invalid code point {0} (Edge)
RangeError: {0} is not a valid code point (Firefox)
RangeError: Invalid code point {0} (Chrome)
Type d'erreur
RangeError
Quel est le problème ?
La méthode String.fromCodePoint() a été utilisée mais elle n'accepte que les points de code valides (code points) et la valeur fournie en argument n'est pas un point de code valide (ex. NaN, -1).
Un point de code est une valeur de code Unicode et s'inscrit dans un intervalle allant de 0 à 0x10FFFF.
Les valeurs NaN, les entiers négatifs (-1), les flottants (3.14) ou les valeur supérieures à 0x10FFFF (1114111) ne peuvent pas être utilisées avec cette méthode.
Examples
Exemples invalides
js
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
Exemples valides
js
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"