prevent special characters in input fields using jquery

Question

I want to block all special characters in the input fields using jquery, any suggestion in doing this?

possible duplicate of how do i block or restrict special characters from input fields with jquery? — KevSheedy
– KevSheedy, Commented Nov 11, 2013 at 12:21

Jla · Accepted Answer · 2010-05-27 09:40:02Z

1

You can also check the more specific alphanumeric plugin

Example:

$('.sample1').alphanumeric();

Allows alphabet and numeric characters

answered May 27, 2010 at 9:40

Jla

11.4k14 gold badges65 silver badges85 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

user335160 Over a year ago

Thanks DrDro,this is very much helpful.

Pranay Rana · Accepted Answer · 2010-05-27 09:49:57Z

1

Simple function to allow alpha only char :

function AlphaNumericOnly(e,isAlphaonly)
{
   // copyright 1999 Idocs, Inc. http://www.idocs.com
   var key = [e.keyCode||e.which];

   var keychar = String.fromCharCode([e.keyCode||e.which]);
   keychar = keychar.toLowerCase();

   if(isAlphaonly=='true')
         checkString="abcdefghijklmnopqrstuvwxyz";
   else 
         checkString="abcdefghijklmnopqrstuvwxyz0123456789";

   if ((key==null) || (key==0) || (key==8) || 
         (key==9) || (key==13) || (key==27) )
        return true;
   else if (((checkString).indexOf(keychar) > -1))
        return true;
   else
        return false;
}

answered May 27, 2010 at 9:49

Pranay Rana

177k37 gold badges244 silver badges267 bronze badges

Collectives™ on Stack Overflow

prevent special characters in input fields using jquery

2 Answers 2

1 Comment

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related