reverse string

function prototype to reverse a string.

HTML

<textarea></textarea>

JavaScript

String.prototype.reverse = function() {
    var str = this,
        newString = new String();
    for (n = str.length; n >= 0; n--) {
        newString += str.charAt(n);
    }
    return newString;
}
    $("textarea").change(function(){
  $("textarea").val($("textarea").val().reverse());
    });