input type number remove arrow (spinner) using css

 input[type=number]{ -moz-appearance: textfield; }
  input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
-webkit-appearance: none;
margin: 0;
}

You are able to specify for particular field using class

Format
input[type=number].classname{}

From Date and To date Validation Jquery date picker

$(function () {
    $("#txtFrom").datepicker({
        numberOfMonths: 2,
        onSelect: function (selected) {
            var dt = new Date(selected);
            dt.setDate(dt.getDate() + 1);
            $("#txtTo").datepicker("option", "minDate", dt);
        }
    });
    $("#txtTo").datepicker({
        numberOfMonths: 2,
        onSelect: function (selected) {
            var dt = new Date(selected);
            dt.setDate(dt.getDate() - 1);
            $("#txtFrom").datepicker("option", "maxDate", dt);
        }
    });
});

if you are using dd-mm-yy format use this code

                         sd=txt.split("-");
actdate=sd[1]+"/"+sd[0]+"/"+sd[2];
var dt = new Date(actdate);
           dt.setDate(dt.getDate() +5);
          var mydate=dt.getDate()+'-'+(dt.getMonth()+1)+'-'+dt.getFullYear();