Reverse decimal digits in javascript

Question

How do I reverse the digits of a number using bitwise?

input:

x = 123; 

output:

x = 321; 

Answer 1

Simple and quick solution: Let's assume that you want to reverse a number 4546. You will take the reminder from each division by 10 and append it to the result until the number is > 0. And simultaneously updating the num variable by dividing it by 10.

var x = '';
var num = 4546;
while(num>0){
 x = x + (num%10);
 num = parseInt(num/10);
}
console.log(x);