Monday 25 February 2013

Validation at least one before and one after decimal



  <asp:TextBox ID="txttotalarea" runat="server"
                                                    Width="90px" onKeyUp="fillareaandunit(this.id);">0</asp:TextBox>



 function fillareaandunit(id) {
            var e = document.getElementById("" + id + "");
            var regexp = ^\d{0,M}\.?\d{0,N}$;
            if (!regexp.test(e.value)) {
                alert("Please enter onyl number.");
                e.value = e.value.substring(0, e.value.length - 1);
                return false;
            }


M = at most number of digits before decimal point
N = at most number of digits after decimal point

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