JSFiddle - React, Tailwind, and code Playground

by Jessie Lau

JavaScript

function MultiplicativePersistence(num) {
    var counter = 0;
    var Num = 1;
    var numToString = num.toString();
    if (numToString.length > 1) {
        for (var i = 0; i < numToString.length; i++) {
            Num *= Number(numToString[i]);
            counter++;
        }       
    }
    return counter;
}

console.log(MultiplicativePersistence(39));