text box remove content

@PadonakJul 02.2010 — #try this

[CODE]function filter_value(){
 var txt = document.getElementById(your_posting_form_textaria_id).value;
 var unwanted = /www./i;
 document.getElementById(your_posting_from_textaria_id).value = txt.replace(unwanted, '');
 document.getElementById(your_posting_form_id).submit();
 }
 
 document.getElementById(your_posting_form_id).onsubmit = filter_value;[/CODE]

example

[CODE]<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 <title>Filter value</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <style type="text/css">
 select{margin:5px 10px;padding:3px 7px 3px 5px;border:none;}
 div#content{text-align:center;padding-top:100px;}
 </style>
 <script type="text/javascript">
 function filter_value(){
 var txt = document.getElementById('inp').value;
 var unwanted = /www./ig;
 /*
 var unwanted = /(http://)?www./ig;
 use this if you want to remove http:// aswell
 */
 document.getElementById('inp').value = txt.replace(unwanted, '');
 /*
 the two lines below are just for testing
 remove them and uncomment the last line
 */
 document.getElementById('result').innerHTML = document.getElementById('inp').value;
 return false;
 //document.getElementById(your_posting_form_id).submit();
 }
 
 function set_posting_form(){
 document.getElementById('p_f').onsubmit = filter_value;
 }
 
 window.onload = set_posting_form;
 </script>
 </head>
 <body>
 <div id="content">
 <form id="p_f" action="">
 <textarea id="inp" cols="50" rows="5"></textarea><br /><br /><br />
 <input type="submit" />
 </form>
 <div id="result">&nbsp;</div>
 </div>
 </body>
 </html>[/CODE]

text box remove content

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