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RangeError: precision is out of range - JavaScript | MDN
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RangeError: precision is out of range
Message
RangeError: The number of fractional digits is out of range (Edge)
RangeError: The precision is out of range (Edge)
RangeError: precision {0} out of range (Firefox)
RangeError: toExponential() argument must be between 0 and 20 (Chrome)
RangeError: toFixed() digits argument must be between 0 and 20 (Chrome)
RangeError: toPrecision() argument must be between 1 and 21 (Chrome)
Type d'erreur
RangeError
Quel est le problème ?
Un argument dont la précision est en dehors de l'intervalle valide, prévu par le moteur JavaScript, a été utilisé pour une de ces méthodes :
Généralement, ces méthodes acceptent des arguments de précision compris entre 0 et 20 (voire 21). Cependant, la spécification ECMAScript permet de gérer des valeurs en dehors de cet intervalle.
| Méthode | Firefox (SpiderMonkey) | Chrome, Opera (V8) |
|---|---|---|
Number.prototype.toExponential() |
0 to 100 | 0 to 20 |
Number.prototype.toFixed() |
-20 to 100 | 0 to 20 |
Number.prototype.toPrecision() |
1 to 100 | 1 to 21 |
Exemples
Exemples invalides
js
(77.1234).toExponential(-1); // RangeError
(77.1234).toExponential(101); // RangeError
(2.34).toFixed(-100); // RangeError
(2.34).toFixed(1001); // RangeError
(1234.5).toPrecision(-1); // RangeError
(1234.5).toPrecision(101); // RangeError
Exemples valides
js
(77.1234).toExponential(4); // 7.7123e+1
(77.1234).toExponential(2); // 7.71e+1
(2.34).toFixed(1); // 2.3
(2.35).toFixed(1); // 2.4 (note that it rounds up in this case)
(5.123456).toPrecision(5); // 5.1235
(5.123456).toPrecision(2); // 5.1
(5.123456).toPrecision(1); // 5