MVC Textbox Allow Only alphabets and Dot(.) in text box using java script

MVC Textbox Allow Only alphabets and Dot(.) in text box using java script

Step1: Javascript Code
<script>
 function Char(evt) {
        var charCode = (evt.which) ? evt.which : event.keyCode
        if ((charCode > 64 && charCode < 91) || (charCode > 96 && charCode < 123) || charCode == 46 || charCode == 8)
            return true;
        return false;
    }
</script>

Step2: index.cshtml

<p>@Html.TextBoxFor(m => m.Name, new { @class = "txtreg", @id = "Name", @placeholder = "Name", @onkeypress = "return Char(event);" })</p>