How to reverse a string in javascript without for loop and while loop?

Well, as this looks like a homework question, I'd expect that they are looking for the naive way of reversing strings, but this only properly works on none unicode strings. If you are looking for a more comprehensive solution, and it wasn't for homework, I'd use this[^] library.

So, what is the naive version? It's quite simple really:

var text = 'Text to reverse';
var reversed = text.split('').reverse().join('');

If you want to be really cunning, you could add this to the String prototype like this:

String.prototype.reverse = function(){ return this.split('').reverse().join('');}

What this functionality does is split the string into individual characters, then it reverses the order of them and finally it joins them back together again with no space in between.

Its will reverse your desire string.

var mystr     = 'sajidur';
var revstr = mystr.split('').reverse().join('');

Did you search Google for this? :(
Ten ways to reverse a string in JavaScript[^]

var name= $('#inputfield').val();

var Reverse= name.split("").reverse().join("");