验证

 function checkemail()  //检查E-mail
        {
            var myemail = document.getElementById("Email").value;
            var myDivemail = document.getElementById("ErrInfo");
            if (myemail != "") {
                if (myemail.indexOf("@") == -1 || myemail.indexOf(".") == -1 || (myemail.indexOf("@") > myemail.indexOf("."))) {
                    myDivemail.innerHTML = "<font color=red>E-mail格式不正确！例：[e-mail]</font>";
                    return false;
                }
            }
        }

 

 

 

 

<asp:TextBox ID="Email" name="Email" runat="server" Width="170px" CssClass="input02" MaxLength="32"  onblur="checkemail()"></asp:TextBox>

 

 

 

<asp:Label ID="ErrInfo" runat="server" ForeColor="Red"></asp:Label>