CHECK EXPRESSION LIKE:: 11112233-1234 <input type="text" value="" name="preg" id="preg" placeholder="11112233-1234" form-control"> <script type="text/javascript"> $('#preg').on('keyup', function(){ var dis = $(this); var _preg = "[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][-][0-9][0-9][0-9] [0-9]"; if(dis.val().match(/[0-9][0-9] [0-9][0-9][0-9][0-9][0-9][0-9] [-][0-9][0-9][0-9][0-9]/)){ console.log('Matched'); }else{ console.log('Not-Matched'); } }); </script>