RangeError: precision is out of range
๋ฉ์์ง
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)
์๋ฌ ํ์
๋ฌด์์ด ์๋ชป๋์์๊น?
์๋์ ๋ฉ์๋๋ค ์ค ํ๋์์, ์คํ ์ธ์(argument)๊ฐ ์ ํ๋์ ๋ฒ์๋ฅผ ๋ฒ์ด๋ฌ์ต๋๋ค. :
์ด ๋ฉ์๋๋ค์๊ฒ ํ์ฉ๋ ๋ฒ์๋ 0๋ถํฐ 20 (๋๋ 21)๊น์ง ์ ๋๋ค. ํ์ง๋ง, ECMAScript ์คํ์ ์๋์ ๋ฒ์๊น์ง ํ์ฅํ์ฌ ํ์ฉํ๊ณ ์์ต๋๋ค.
| Method | Firefox (SpiderMonkey) | Chrome, Opera (V8) |
|---|---|---|
Number.prototype.toExponential() |
0 ๋ถํฐ 100 | 0 ๋ถํฐ 20 |
Number.prototype.toFixed() |
-20 ๋ถํฐ 100 | 0 ๋ถํฐ 20 |
Number.prototype.toPrecision() |
1 ๋ถํฐ 100 | 1 ๋ถํฐ 21 |
์
์ ํจํ์ง ์์ ๊ฒฝ์ฐ
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
์ ํจํ ๊ฒฝ์ฐ
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