Get Scale and Precision from Number - JavaScript

getScaleAndPrecision.js

// Database Number: Scale and Precision
// Input: 123456.1234
// Output: scale 4, precision 6
function getScaleAndPrecision(x) {
    x = parseFloat(x);
    if (!x || isNaN(x)) return null; //NaN, undefined, null, 'abcd', ""...
    let parts = x.toString().split(".");
    if (parts.length > 2) return null;
    return {
        scale: parts[1] ? parts[1].length : 0,
        precision: parts[0].length
    }
}