Alphanumeric Characters Script

This javascript will help you to accept only strings and numbers and donot accept special characters.It checks alphanumeric characters.

Features

By using this javascript, the textbox accepts only strings and numbers but not the special characters. It checks for alpha numeric characters alone.
Just copy the code into your page and use it.

Preview

Downloads

Javascript

<script type="text/javascript">
var r={'special':/[\W]/g}
function valid(o,w)
{
o.value = o.value.replace(r[w],'');
}
</script>

HTML Code

<form id="myform">
Enter the strings and numbers.It donot accept special characters like $,%,#,@ etc,but accept underscore<br><br>
<center><input type="text" size="25" name="comments" onkeyup="valid(this,'special')" onblur="valid(this,'special')"><br><br></center>
<div align=center>©<a href="https://www.hscripts.com" style=color: #3D366F;text-decoration:none;cursor:pointer;font-size:13px">hscripts.com</a></div>
</form>

Release Date - 07-04-2008
Get free version without ©copyright link for just $10/-
For customization of this script or any script development, mail to support@hscripts.com

Usage

This script is used to accept only strings and numbers and do not accept special characters.
The function valid() is called for validation that is the typing character is a special character means remove that characters because this text box doesn't accept special characters.
Copy the code into your page and use it.