How to restrict users to enter only decimal numbers and numbers from 1 to 10 in asp.net with c# using javascript

See more:

ASP.NET

Javascript

C#3.5

C#5.0

Hello all.
I have two questions:

1)I have a textbox in asp.net web form. I want to restrict users to enter only decimals in this textbox.
I know the JQuery code for this purpose,but how can I do this using javascipt?
This is what I did:

function isNumberKey_decimal(evt) {
       var charCode = (evt.which) ? evt.which : evt.keyCode;
       if (charCode != 46 && charCode > 31
         && (charCode < 48 || charCode > 57))
           return false;
       return true;
   }

protected void Page_Load(object sender, EventArgs e)
    {
        txt1.Attributes.Add("onkeypress", "return isNumberKey_decimal(event)");
    }

It works,but there is a problem. It doesn't prevent from entering different dots. For example, 10..2 or 10.. , are allowed. How can I prevent from this?

2)I have another textbox. I want to force users to enter only numbers 1 to 10. How can I do this using java script?

Please help me.
Thanks a lot.


Update:
Finally I could find the answer of my first question:

function isNumberKey_decimal(evt) {
    
    var charCode = (evt.which) ? evt.which : event.keyCode;
    if (charCode == 46 && evt.srcElement.value.split('.').length > 1) {
        return false;
    }
    if (charCode != 46 && charCode > 31 && (charCode < 48 || charCode > 57))
        return false;
    return true;
}

Hope it helps you.

Can anyone answer my second question please?
Thanks a million.