- <script type ="text/javascript" language="javascript">
- function checkInput() {
- var strMsg = "";
- var userName = document.getElementById("<%=txt_Uer.ClientID%>").value;
- var password = document.getElementById("<%=txt_Password.ClientID%>").value;
- var txt_key = document.getElementById("<%=txt_key.ClientID%>").value;
- if (userName == "" || userName == null) {
- strMsg = "用户名"
- }
- if (password == "" || password == null) {
- strMsg += " 密码"
- }
- if (txt_key == "" || txt_key == null) {
- strMsg += " 验证码"
- }
- if (strMsg != "") {
- alert(strMsg + " 不能为空!");
- return false;
- }
- }
- </script>
- <asp:Button ID="Button1" runat="server" Text="登录" onclick="Button1_Click" OnClientClick="return checkInput()" />
- //该片段来自于http://www.codesnippet.cn/detail/270620134326.html
来源: http://www.codesnippet.cn/detail/270620134326.html