characters search in input box

@astupidnameApr 24.2009 — #Yes it's possible through regEx. An example (with a bunch of added stuff, take or remove as wanted):

[code=html]<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
 <html>
 <head>
 <meta content="text/html; charset=ISO-8859-1" http-equiv="content-type">
 <title>astupidtitle</title>
 
 <script type="text/javascript">
 
 function checkValue(form,input) {
 var val = form[input].value;
 //you might not need everything that's in rex, just threw in for example
 var rex = /http|www.|.html|.htm|.php|.asp|.jpg|.gif|.wmv|.mpg|.flv|.swf|.txt|.css|.js/;
 return !rex.test(val);
 }
 
 </script>
 </head>
 <body>
 <form action="page2.html" name="someForm" onsubmit="return checkValue(this,'someInput');">
 <p><a href="http://www.w3schools.com/js/js_obj_regexp.asp">Learn about regEx</a><br>
 <a href="http://www.w3schools.com/jsref/jsref_obj_regexp.asp">Learn about RegExp object methods</a><br>
 <a href="http://www.javascriptkit.com/jsref/regexp.shtml">Another excellent source for RegExp info</a><br><input type="text" name="someInput"><input type="submit" value="Submit"></p>
 </form>
 </body>
 </html>[/code]

characters search in input box

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