1 <script language="javascript" type="text/javascript">
2 var _xmlHttpRequest ;
3 function createXmlHttpRequest() {
4 return window.XMLHttpRequest ? new XMLHttpRequest() : window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") : new XMLHttpRequest();
5 }
6
7 function valieUserByGet() {
8 var _userName = document.getElementById("Text1");
9 var _passWord = document.getElementById("Text2");
10 _xmlHttpRequest = createXmlHttpRequest();
11 if (_xmlHttpRequest != null) {
12 var _url = "Login_System.aspx?username=" + escape(_userName.value) + "&password=" + escape(_passWord.value);
13 var _method = "GET";
14 _xmlHttpRequest.open(_method, _url, true);
15 _xmlHttpRequest.onreadystatechange = handleStateChange;
16 _xmlHttpRequest.send(null);
17 }
18 }
19
20 function valieUserByPost() {
21 var _userName = document.getElementById("Text1");
22 var _passWord = document.getElementById("Text2");
23 _xmlHttpRequest = createXmlHttpRequest();
24 if (_xmlHttpRequest != null) {
25 var _url = "Login_System.aspx";
26 var _method = "POST";
27 _xmlHttpRequest.open(_method, _url, true);
28 _xmlHttpRequest.onreadystatechange = handleStateChange;
29 _xmlHttpRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
30 _xmlHttpRequest.send("username=" + escape(_userName.value) + "&password=" + escape(_passWord.value));
31 }
32 }
33
34 function handleStateChange() {
35 if (_xmlHttpRequest.readyState == 4) {
36 if (_xmlHttpRequest.status == 200) {
37 var _responseText = _xmlHttpRequest.responseText;
38 if (_responseText == "0") {
39 alert("用户名不存在");
40 }
41 else if (_responseText == "1") {
42 alert("密码不正确");
43 }
44 else if (_responseText == "2") {
45 alert("验证通过");
46 }
47 }
48 }
49 }
50 </script>
1 protected void Page_Load(object sender, EventArgs e)
2 {
3
4 string _userName = Request["username"] != null ? Request["username"].ToString() : "";
5 string _passWord = Request["password"] != null ? Request["password"].ToString() : "";
6 if (_userName != "" && _passWord != "")
7 {
8 var _responseText = "";
9 if (_userName.ToLower() == "admin")
10 {
11 if (_passWord.ToLower() == "111111")
12 {
13 _responseText = "2";
14 }
15 else
16 {
17 _responseText = "1";
18 }
19 }
20 else
21 {
22 _responseText = "0";
23 }
24 writeRespose(_responseText);
25 }
26
27 }
28
29 private void writeRespose(string _writeResponse)
30 {
31 Response.Clear();
32 Response.ContentType = "text/html";
33 Response.CacheControl = "no-cache";
34 Response.Write(_writeResponse);
35 Response.End();
36 }
1 <div>
2 用户名<input id="Text1" type="text" />
3 </div>
4 <div>
5 密码<input id="Text2" type="text"/>
6 </div>
7 <div>
8 <input id="Button1" type="button" value="get验证" onclick="valieUserByGet();"/>
9 <input id="Button2" type="button" value="post验证" onclick="valieUserByPost();" />
10 </div>
