find number of digits in a number javascript code example

Example 1: count the total number of digits of a number in javascript

const count = n => String((Math.abs(n))).length;

count(123); // ➞ 3
count(-45678); // ➞ 5
count(8912); // ➞ 4

Example 2: javascript count digits

var length = (number + '').replace('.', '').replace('-', '').length;  // for numbers that can be floats or negatives