Javascript 基础知识

Validate User Input

<input id="txtSerialNumber" type="text" runat="server" maxlength="12" />

function ValideMessage() {
if ($('#<%=txtSerialNumber.ClientID %>').attr('value') == '') {
alert('罪犯编号不能为空');
return false;
}}}

<asp:Button ID="submitAddUpdate" Text="确定" runat="server"
οnclick="submitAddUpdate_Click" OnClientClick="return ValideMessage()" />