Response.Write("<script type='text/javascript' language='javascript' >alert('用户名不能为空！请输入！')</script>");
---------------------------------------------------------------
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script type="text/javascript" language="javascript">
function showCustomer() {
alert("ddd")
var str = document.getElementById("txtvalue").value;
if (str == "") {
return;
}
var xmlhttp;
if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
}
else {// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("txtHint").innerHTML = xmlhttp.responseText;
}
}
xmlhttp.open("GET", "Conn.aspx?name="+str, true);
xmlhttp.send();
}
function add() {
var names = document.getElementById("names").value;
var Valuses = document.getElementById("Valuses").value;
if (names == "") {
return;
}
if (Valuses == "") {
return;
}
var xmlhttp;
if (window.XMLHttpRequest) {
xmlhttp=new XMLHttpRequest();
}
else{
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("txtHint").innerHTML = xmlhttp.responseText;
}
}
xmlhttp.open("POST", "addweb.aspx", true);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.send("names='" + names + "'&Valuses='" + Valuses + "'");
}
</script>
</head>
<body>
<input type="button" >
</div>
</body>
</html>
------------------------------------------------------------
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Conn.aspx.cs" Inherits="WebApplication1.Conn" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form );
}
%>
</div>
</form>
</body>
</html>