event-handling

问题 let say have element like this <div class="watch-me" style="display: none;">Watch Me Please</div> as we can see the element above style is display: none , how can i make script to watch this element. when that element style is change to display: block then there is some code will be trigger. many thanks... 回答1: As far as I know, the only way to do this would be with a timer. I created a small jQuery plugin (yes, right here, right now) that does this against a jQuery set: EDIT this plugin is

问题 I have a jQuery onClick handler, writed with an anonymous function like that: $("#selector").on("click" function(){ // do something }) I would generalize the anonymous function extracting the logic in a named function, that drive me to something like: $("#selector").on("click" namedFunction()) function namedFunction(){ // do something } To me seemed a good solution. But there's a drawback since the namedFunction is executed as soon script is loaded. Here you can test the bad behaviour. 回答1:

问题 I want to duplicate a control like a Button, TextBox, etc. But I don't know how I can copy event handler methods (like Click ) to the new control. I have the following code now: var btn2 = new Button(); btn2.Text = btn1.Text; btn2.size = btn1.size; // ... btn2.Click ??? btn1.Click Is there any other way to duplicate a control? 回答1: To clone all events of any WinForms control: var eventsField = typeof(Component).GetField("events", BindingFlags.NonPublic | BindingFlags.Instance); var

问题 Is there any way to listen to the event of volume change on Android, without just taking over the volume buttons? The only thing I've found that works is here, but it works only after the volume control has disappeared. Not all devices have volume buttons, and I need to capture the volume changes as soon as they occur, and not after the volume dialog is gone. 回答1: Better, you can register a ContentObserver as follows: getApplicationContext().getContentResolver().registerContentObserver

问题 I need to create an event listener such that, when a new element is added to the document, or any of its child, my event handler gets called. Any ideas how to do this using? 回答1: .bind('DOMNodeInserted DOMNodeRemoved') this are the events to check element is inserted or removed. bind on parent element this event. and call your function in handler js fiddle demo : http://jsfiddle.net/PgAJT/ click here for example ... http://help.dottoro.com/ljmcxjla.php 回答2: Mutation events are deprecated, use

问题 I have a need to do some real-time reporting on the functionality of a WCF service. The service is self-hosted in a windows app, and my requirement is to report "live" to the host app when certain methods are called by the client. My initial thought on the task was to publish a "NotifyNow" event in the service code, and subscribe to the event in my calling app, but this doesn't seem to be possible. Within my service code (implementation, not the interface) I have tried adding the following

问题 I am trying to fire the event handler assigned to my timer mock. How can I test this private method here? public interface ITimer { void Start(); double Interval { get; set; } event ElapsedEventHandler Elapsed; } Client class assigns an event handler to this object. I want to test the logic in this class. _timer.Elapsed += ResetExpiredCounters; And the assigned method is private private void ResetExpiredCounters(object sender, ElapsedEventArgs e) { // do something } I want to have this event

问题 In my Silverlight UI, I have a button that when clicked pops up a control with some filtering parameters. I would like this control to hide itself when you click outside of it. In other words, it should function in a manner similar to a combo box, but it's not a combo box (you don't select an item in it). Here's how I'm trying to capture a click outside of the control to dismiss it: public partial class MyPanel : UserControl { public MyPanel() { InitializeComponent(); } private void

问题 I have defined new member in my class protected COMObject.Call call_ = null; This class has the following event handler that I subscribed to call_.Destructed += new COMObject.DestructedEventHandler(CallDestructedEvent); Will setting my member to null as following remove the event handler? call_ = null; or I have to unsubscribed with -=? 回答1: yes, you should use overloaded -= to unsubscribe an event. simply assigning a reference to null will not do that automatically. The object will still be

问题 I'm not sure if I'm entirely clear on the implications of attaching to events in objects. This is my current understanding, correct or elaborate: 1. Attaching to local class events do not need to be detached Examples: this.Closing += new System.ComponentModel.CancelEventHandler(MainWindow_Closing); public event EventHandler OnMyCustomEvent = delegate { }; I'm assuming that when your object is disposed or garbage collected, the functions are deallocated and would automatically detach from the