https://www.renhill.com/ScriptResource.axd?d=DnCEd1Ry0EkgBIAhqxJQm…prB7lrCd46FJhBB3e_oiw281&t=ffffffff8b3ffb57

1/////////////////////////////////////////////////////////////////////////////
2Sys.Timer = function() {
3Sys.Timer.initializeBase(this);this._interval = 1000;this._enabled = false;this._timer = null;}
4Sys.Timer.prototype = {
5get_interval: function() {
6return this._interval;},
7set_interval: function(value) {
8if (this._interval !== value) {
9this._interval = value;this.raisePropertyChanged('interval');if (!this.get_isUpdating() && (this._timer !== null)) {
10this._stopTimer();this._startTimer();}
11}
12},
13get_enabled: function() {
14return this._enabled;},
15set_enabled: function(value) {
16if (value !== this.get_enabled()) {
17this._enabled = value;this.raisePropertyChanged('enabled');if (!this.get_isUpdating()) {
18if (value) {
19this._startTimer();}
20else {
21this._stopTimer();}
22}
23}
24},
25add_tick: function(handler) {
26this.get_events().addHandler("tick", handler);},
27remove_tick: function(handler) {
28this.get_events().removeHandler("tick", handler);},
29dispose: function() {
30this.set_enabled(false);this._stopTimer();Sys.Timer.callBaseMethod(this, 'dispose');},
31updated: function() {
32Sys.Timer.callBaseMethod(this, 'updated');if (this._enabled) {
33this._stopTimer();this._startTimer();}
34},
35_timerCallback: function() {
36var handler = this.get_events().getHandler("tick");if (handler) {
37handler(this, Sys.EventArgs.Empty);}
38},
39_startTimer: function() {
40this._timer = window.setInterval(Function.createDelegate(this, this._timerCallback), this._interval);},
41_stopTimer: function() {
42window.clearInterval(this._timer);this._timer = null;}
43}
44Sys.Timer.descriptor = {
45properties: [ {name: 'interval', type: Number},
46{name: 'enabled', type: Boolean} ],
47events: [ {name: 'tick'} ]
48}
49Sys.Timer.registerClass('Sys.Timer', Sys.Component);