JSFiddle - React, Tailwind, and code Playground

by ti2005

JavaScript

function reverseNumber(num) {
    var result = 0;
    while(num > 0){
        var rem = num % 10;
        result = (result * 10) + rem;
        num = parseInt(num/10);

    }
   return result;
}

var output = reverseNumber(12345);
console.log("Res: ", output);