Text input validation

Text input validation with jquery
 <script type="text/javascript">

  $(function () {

            $('input[type=text]').on('keyup', function (e) {

                if (/[^.a-z_ 0-9- A-Z]/.test(this.value)) {

                    this.value = this.value.replace(/[^.a-z_ 0-9- A-Z]/g, '');

                }

            });

        });   

</script>

this will allow only A to Z ,a to z , 0-9 and some character ,-_. also