Allow text box only for letters using jQuery?

Question

I want to make a text box allow only letters (a-z) using jQuery. Any examples?

Answer 1

$("#txtName").keypress(function (e) {

    var key = e.keyCode;
    if ((key >= 48 && key <= 57) || (key >= 33 && key <= 47) || (key >= 58 && key <= 64) || (key >= 91 && key <= 96) || (key >= 123 && key <= 127)) {
        e.preventDefault();
    }
    var text = $(this).val();
    $(this).val(text.replace("  ", " "));

});