See event.data. The data is not passed as argument to handler, but as property of the event object: $(“select#test”).change({msg: “ok”}, function(event) { alert(event.data.msg); }); The handler always only accepts one argument, which is the event object. This is the reason why your alert shows “[object Object]”, your function is printing the event object. If you … Read more
Here’s a roundup post I wrote for this issue and a workaround in pure JavaScript to solve the encountered problems. Edited to include a copy of the sourced blog post: In any kind of javascript application we develop there may be a feature or any change in the application which reacts according to the current … Read more
Here is a list of Javascript events: https://developer.mozilla.org/en-US/docs/Web/Events
The simple way to retrieve checked value of RadioButtonList1 is: $(‘#RadioButtonList1 input:checked’).val() Edit by Tim: where RadioButtonList1 must be the ClientID of the RadioButtonList var rblSelectedValue = $(“#<%= RadioButtonList1.ClientID %> input:checked”);
This has been changed with DOM3! While the DOM level 2 events specification did state When the event reaches the target, any event listeners registered on the EventTarget are triggered. Although all EventListeners on the EventTarget are guaranteed to be triggered by any event which is received by that EventTarget, no specification is made as … Read more
return SetWindowsHookEx(WH_MOUSE_LL, proc, GetModuleHandle(curModule.ModuleName), 0); This code will fail when you run it on .NET 4 on a Windows version earlier than Windows 8. The CLR no longer simulates unmanaged module handles for managed assemblies. You can’t detect this failure in your code because it is missing the required error checking. Both on GetModuleHandle and … Read more
The complete Swing processing is done in a thread called EDT (Event Dispatching Thread). Therefore you would block the GUI if you would compute some long lasting calculations within this thread. The way to go here is to process your calculation within a different thread, so your GUI stays responsive. At the end you want … Read more
With an explicit event, you need to provide your own backing store – either a delegate field or something like EventHandlerList. The current code is recursive. Try: private EventHandler itemsProcessed; public event EventHandler ItemsProcessed { add { itemsProcessed-= value; itemsProcessed+= value; } remove { itemsProcessed-= value; } } Then (and noting I’m being a little … Read more
Button button = new Button(); button.Click += (s,e) => { your code; }; //button.Click += new EventHandler(button_Click); container.Controls.Add(button); //protected void button_Click (object sender, EventArgs e) { }
The common pattern here is not to return any data from the event handler, but to add properties to your event argument object so that the consumer of the event can set the properties which the caller can then access. This is very common in UI handling code; you see the Cancel event concept all … Read more