将十进制数转换为分数/有理数 [英] Convert a decimal number to a fraction / rational number

问题描述

在JavaScript中，有没有办法将十进制数字（例如 0.0002 ）转换为表示为字符串的分数（例如 2/10000）？

In JavaScript, is there any way to convert a decimal number (such as 0.0002) to a fraction represented as a string (such as "2/10000")?

如果编写了一个名为 decimalToFraction 的函数这个目的，然后 decimalToFraction（0.0002）将返回字符串2/10000。

If a function called decimalToFraction had been written for this purpose, then decimalToFraction(0.0002) would return the string "2/10000".

推荐答案

您可以使用Erik Garrison的分数.js 库可以做更多的分数操作。

You can use Erik Garrison's fraction.js library to do that and more fractional operations.

var f = new Fraction(2, 10000);
console.log(f.numerator + '/' + f.denominator);

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要做.003你可以做到

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To to do .003 you can just do

var f = new Fraction(.003);
console.log(f.numerator + '/' + f.denominator);

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