@extra-number/significant-digits v2.0.27

Counts the number of significant digits of a number.

Based on the solution provided by @Jos de Jong. This is part of package extra-number.

number.significantDigits(n);
// n: a number

const number = require('extra-number');

number.significantDigits(0.0034);
// 2

number.significantDigits(120.5e50);
// 4

number.significantDigits(120.5e-50);
// 4

references

• What is the fastest way to count the number of significant digits of a number?