Javascript Palindrome Checker

Simple javascript that allows you to check whether a given word / string is a Palindrome or not. A palindrome is a word or phrase which reads the same forward or reverse direction.

Features

Used to reverse the string and check the given word is palindrome or not.
The checker returns true or false upon comparision.
The script considers spaces, punctuation marks, upper and lower cases.

Preview

Downloads

Javascript Code

<script type="text/javascript">
function reverse_string(str){var
stri = "";var
alen = str.length;for (var i = alen ; i > 0 ; i--){stri += str.charAt(i-1)}return stri;
}
function palindrome(str){return (str == reverse_string(str));
}
function palindrome_check(){var str = document.getElementById('inputstr').value;
if(str!=""){document.getElementById('reversestr').value=reverse_string(str);document.getElementById('ispalin').value=palindrome(str);return true;}else alert ('Enter String');
}
</script>

HTML Code

<table align=center style='border:1px solid green;color: #3D366F;font-size:13px;' cellpadding=5 cellspacing=5>

<tr><td>Enter the word:<input type="text" id="inputstr" size="6"></td></tr>

<tr><td><input type="button" value="Reverse Word" onclick="palindrome_check();">

<input type="text" id="reversestr" size="6""></td></tr>

<tr><td>Is the word a palindrom?<input type="text" id="ispalin" size="4" value="">

</td></tr>

<tr>

<td align=center>

<a href='https://www.hscripts.com' style='text-decoration:none;font-size:10;color:green;'>©hscripts.com</a>

</td>

</tr>

</table>

Release Date - 18-09-2009
Get free version without ©copyright link for just $10/-
For customization of this script or any script development, mail to support@hscripts.com

Usage

Copy and paste the javascript code into your HTML page to enable word checker.
Here, the function "palindrome_check()" is used to reverse and check the given string is palindrome or not.