RangeError: precision is out of range
The JavaScript exception "precision is out of range" occurs when a number that's
outside of the range of 0 and 20 (or 21) was passed into toFixed or
toPrecision.
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)
Error type
What went wrong?
There was an out of range precision argument in one of these methods:
The allowed range for these methods is usually between 0 and 20 (or 21). However, the ECMAScript specification allows to extend this range.
| Method | 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 |
Examples
Invalid cases
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
Valid cases
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