使用javascript產生guid

參考來源: http://note19.com/2007/05/27/javascript-guid-generator/

javascript

1. function guid() {
2.     function S4() {
3.         return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
4.     }
5.     return (S4() + S4() + "-" + S4() + "-" + S4() + "-" + S4() + "-" + S4() + S4() + S4());
6. }

html javascript 小時鐘 digit clock

就像這樣:

html javascript

1. <span id="__current_datetime__">
2. <script type="text/javascript">
3.     (function () {
4.         var target = "__current_datetime__";
5.         var padLeft = function(str) {
6.             str = "00" + str;
7.             return str.substring(str.length-2)
8.         };
9.         var getCurrentDateTime = function() {
10.             var d = new Date();
11.             return d.getFullYear() + "&#24180;"
12.                 + padLeft(d.getMonth()+1) + "&#26376;"
13.                 + padLeft(d.getDate()) + "&#26085; "
14.                 + padLeft(d.getHours()) + ":"
15.                 + padLeft(d.getMinutes()) + ":"
16.                 + padLeft(d.getSeconds());
17.         };
18.         var updateCurrentDateTime = function(id) {
19.             document.getElementById(id).innerHTML = getCurrentDateTime();
20.         };
21.         updateCurrentDateTime(target);
22.         setInterval(function() {
23.             updateCurrentDateTime(target);
24.         }, 99);
25.     }) ()
26. </script></span>

製造出純html的原始碼線上工具(Online Syntex Highlighter)

VB.net 動態變更使用者 switch user dynamically

文章參考: 如何在 ASP.NET 應用程式中實作模擬

VB.net

1. Public Class Personate
2.     Private Shared LOGON32_LOGON_INTERACTIVE As Integer = 2
3.     Private Shared LOGON32_PROVIDER_DEFAULT As Integer = 0
4.     Private Shared ImpersonationContext As WindowsImpersonationContext
5.  
6.     Declare Function LogonUserA Lib "advapi32.dll" (ByVal lpszUsername As String, _
7.                             ByVal lpszDomain As String, _
8.                             ByVal lpszPassword As String, _
9.                             ByVal dwLogonType As Integer, _
10.                             ByVal dwLogonProvider As Integer, _
11.                             ByRef phToken As IntPtr) As Integer
12.  
13.     Declare Auto Function DuplicateToken Lib "advapi32.dll" ( _
14.                             ByVal ExistingTokenHandle As IntPtr, _
15.                             ByVal ImpersonationLevel As Integer, _
16.                             ByRef DuplicateTokenHandle As IntPtr) As Integer
17.  
18.     Declare Auto Function RevertToSelf Lib "advapi32.dll" () As Long
19.     Declare Auto Function CloseHandle Lib "kernel32.dll" (ByVal handle As IntPtr) As Long
20.  
21.     Public Shared Function ImpersonateValidUser(ByVal userName As String, ByVal domain As String, ByVal password As String) As Boolean
22.  
23.         Dim tempWindowsIdentity As WindowsIdentity
24.         Dim token As IntPtr = IntPtr.Zero
25.         Dim tokenDuplicate As IntPtr = IntPtr.Zero
26.         ImpersonateValidUser = False
27.  
28.         If RevertToSelf() Then
29.             If LogonUserA(userName, domain, password, LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, token) <> 0 Then
30.                 If DuplicateToken(token, 2, tokenDuplicate) <> 0 Then
31.                     tempWindowsIdentity = New WindowsIdentity(tokenDuplicate)
32.                     ImpersonationContext = tempWindowsIdentity.Impersonate()
33.                     If Not ImpersonationContext Is Nothing Then
34.                         ImpersonateValidUser = True
35.                     End If
36.                 End If
37.             End If
38.         End If
39.         If Not tokenDuplicate.Equals(IntPtr.Zero) Then
40.             CloseHandle(tokenDuplicate)
41.         End If
42.         If Not token.Equals(IntPtr.Zero) Then
43.             CloseHandle(token)
44.         End If
45.     End Function
46.  
47.     Public Shared Sub UndoImpersonation()
48.         ImpersonationContext.Undo()
49.     End Sub
50. End Class

VB.net Convert to JSON

VB.net

1. Public Class JSONConvert
2.     Public Shared Function DataTable2NameValueCollection(ByVal dt As DataTable) As NameValueCollection
3.         Dim columnlist As New List(Of String)()
4.         For Each column As DataColumn In dt.Columns
5.             columnlist.Add(column.ColumnName)
6.         Next
7.  
8.         Dim rowlist As New List(Of String)()
9.         For Each row As DataRow In dt.Rows
10.             Dim itemlist As New List(Of String)()
11.             For Each column As DataColumn In dt.Columns
12.                 If column.DataType.Equals(GetType(Int32)) Or column.DataType.Equals(GetType(Double)) Then
13.                     itemlist.Add(row(column.ColumnName))
14.                 Else
15.                     itemlist.Add(String.Format("""{0}""", row(column.ColumnName)))
16.                 End If
17.             Next
18.             rowlist.Add(String.Format("[{0}]", String.Join(", ", itemlist.ToArray())))
19.         Next
20.  
21.         Dim nv As New NameValueCollection()
22.         nv.Add("columns", Array2JSONArray(columnlist.ToArray()))
23.         nv.Add("rows", Array2JSONArray(rowlist.ToArray()))
24.         Return nv
25.     End Function
26.  
27.     Public Shared Function DataTable2JSONObject(ByVal dt As DataTable) As String
28.         Dim nv As NameValueCollection = DataTable2NameValueCollection(dt)
29.         Return NameValueCollection2JSONObjectArray(nv)
30.     End Function
31.  
32.     Public Shared Function NameValueCollection2JSONObjectArray(ByVal nv As System.Collections.Specialized.NameValueCollection) As String
33.         Dim list As New List(Of String)()
34.         For Each name As String In nv.AllKeys
35.             If Regex.IsMatch(nv(name), "^(.*(\[|\]|{|})+.*|\d+)$") Then
36.                 list.Add(String.Format("""{0}"": {1}", name, nv(name)))
37.             Else
38.                 list.Add(String.Format("""{0}"": ""{1}""", name, nv(name)))
39.             End If
40.         Next
41.         Return String.Format("{{{0}}}", String.Join(", ", list.ToArray()))
42.     End Function
43.  
44.     Public Shared Function Array2JSONArray(ByVal arr As Array) As String
45.         If Regex.IsMatch(String.Join(", ", CType(arr, String())), "^(.*(\[|\]|{|})+.*|\d+)$") Then
46.             Return ObjectArray2JSONArray(arr)
47.         Else
48.             Return StringArray2JSONArray(arr)
49.         End If
50.     End Function
51.  
52.     Public Shared Function StringArray2JSONArray(ByVal arr() As String) As String
53.         If arr.Length = 0 Then
54.             Return ("[]")
55.         Else
56.             Return String.Format("[""{0}""]", String.Join(""", """, arr))
57.         End If
58.     End Function
59.  
60.     Public Shared Function ObjectArray2JSONArray(ByVal arr As Array) As String
61.         Return String.Format("[{0}]", String.Join(", ", CType(arr, String())))
62.     End Function
63. End Class

prototype.js extend Ajax.Queue

javascript

1. var GUID = function () {
2.     function S4() {
3.         return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
4.     }
5.     function guid() {
6.         return (S4() + S4() + "-" + S4() + "-" + S4() + "-" + S4() + "-" + S4() + S4() + S4());
7.     }
8.     return guid();
9. };

javascript

1. Ajax.Queue = Class.create({
2.     initialize: function () {
3.         this.id = GUID();
4.         this.active = false;
5.         this.completed = true;
6.         this.queue = [];
7.         this.stopped = false;
8.         Ajax.Queues.push(this);
9.     },
10.     add: function (url, options) {
11.         this.queue.push({ "url": url, "options": options });
12.         return this.queue.length - 1;
13.     },
14.     enqueue: function (url, options) {
15.         var index = this.add(url, options);
16.         if (!this.active) this.start();
17.         return index;
18.     },
19.     clear: function () {
20.         this.queue = [];
21.     },
22.     start: function () {
23.         if (this.queue.length == 0) {
24.             this.active = false;
25.             this.completed = true;
26.         }
27.         else if (this.stopped) {
28.             this.stopped = false;
29.             this.clear();
30.             this.active = false;
31.             this.completed = true;
32.         }
33.         else {
34.             this.active = true;
35.             var params = this.queue.shift();
36.             params.options = params.options || {};
37.             var handlers = {
38.                 "Success": function (transport) {
39.                     if (typeof console == "object") console.log("success");
40.                     this.start();
41.                 },
42.                 "Failure": function (transport) {
43.                     if (typeof console == "object") console.log("failure");
44.                     this.active = false;
45.                 },
46.                 "Complete": function (transport) {
47.                     if (typeof console == "object") console.log("complete");
48.                     this.active = false;
49.                 },
50.                 "Exception": function (transport, e) {
51.                     if (typeof console == "object") console.log("exception");
52.                     this.active = false;
53.                     this.exception = e;
54.                 }
55.             };
56.             var that = this;
57.             Object.keys(handlers).each(function (event) {
58.                 var eventName = "on" + event;
59.                 var originalHandler = params.options[eventName];
60.                 var handler = handlers[event];
61.                 params.options[eventName] = (function () {
62.                     if (Object.isFunction(originalHandler)) {
63.                         originalHandler.apply(this, arguments);
64.                     }
65.                     handler.apply(this, arguments);
66.                 }).bind(that);
67.             });
68.             this.completed = false;
69.             new Ajax.Request(params.url, params.options);
70.         }
71.     },
72.     stop: function () {
73.         this.stopped = true;
74.     }
75. });
76. Ajax.Queues = [];
77. Ajax.Q = new Ajax.Queue();

usage

1. Ajax.Q.enqueue("url", {
2.     onSuccess: function (transport) {
3.         try {
4.             alert(transport.responseText);
5.         } catch (e) { if(typeof(console) == "object") console.log(e) }
6.     },
7.     onFailure: function (ajax) {
8.         if(typeof(console) == "object") console.log(e);
9.     }
10. });