This program uses a Javascript to reverse a given number. This is also known as the implementation of a palindrome. The program is quite simple. It asks you to enter a number and reverses the same for you. You can find the images for inputs and outputs here.

**Input:**

Suggested Read:

<html> <script type ="text/javascript"> function rev_num() { var num = prompt("Enter the number to be reveresed :", " "); var n= num; var rev = 0, rem; while (n>0) { rem = n % 10; rev = rev * 10 + rem ; n = Math.floor(n/10); } document.write("The given number is : " +num+ " <br/> The reversed number is : " +rev+ "\n"); } </script> <body style="background-color:green" onload="rev_num();"> <body> </html>

**Output 2:**

There is an alternative method to reverse a given number using split(), reverse() and join() functions available in javascript. The following code explains this.

<html> <script type ="text/javascript"> function rev_num() { let num = prompt("Enter the number to be reveresed :", " "); let str = num.toString().split('').reverse().join(''); let rev = parseInt(str); document.write("The given number is : " +num+ " The reversed number is : " +rev+ "\n"); } </script> <body style="background-color:green" onload="rev_num();"> <body> </html>

**Input:**

**Output:**

Another way could be:

function rev_num() {

let num = prompt(“Enter the number to be reveresed :”, ” “);

let str = num.toString().split(”).reverse().join(”);

let rev = parseInt(str);

document.write(“The given number is : ” +num+ ” The reversed number is : ” +rev+ “\n”);

}

Yes. This also works.

Thanks there. :)

very nice. for java examples, visit http://java2novice.com site