Jquery Remove All Event Handlers Inside Element
jQuery will do the looping for you for just the direct children: $(“#div1”).children().off(); or if you want all descendants: $(“#div1”).find(“*”).off();
event-handling
Does AJAX loaded content get a “document.ready”?
To answer your question: No, document.ready will not fire again once a ajax request is completed. (The content in the ajax is loaded into your document, so there isn’t a second document for the ajax content). To solve your problem just add the event listener to the Element where you load the ajax content into … Read more
What event catches a change of value in a combobox in a DataGridViewCell?
The above answer led me down the primrose path for awhile. It does not work as it causes multiple events to fire and just keeps adding events. The problem is that the above catches the DataGridViewEditingControlShowingEvent and it does not catch the value changed. So it will fire every time you focus then leave the … Read more
What’s wrong with calling Invoke, regardless of InvokeRequired?
From non-UI threads we can’t touch the UI – very bad things can happen, since controls have thread affinity. So from a non-UI thread we must (at a minumum) call Invoke or BeginInvoke. For UI-threads, however – we don’t want to call Invoke lots of time; the issue is that if you are already on … Read more
Handling “onclick” event with pure JavaScript
All browsers support this (see example here): mySelectedElement.onclick = function(e){ //your handler here } However, sometimes you want to add a handler (and not change the same one), and more generally when available you should use addEventListener (needs shim for IE8-) mySelectedElement.addEventListener(“click”,function(e){ //your handler here },false); Here is a working example: var button = document.getElementById(“myButton”); … Read more
ASP .NET Button event handlers do not fire on the first click, but on the second click after a PostBack
Good grief! I knew it was going to be something this stupid. Purely my fault of course and my lack of knowledge in ASP .NET. After doing a multitude of Google searches and eventually being blocked by Google on suspicion of being a bot running automated scripts, I managed to squeeze in one last search … Read more
Determine mouse position outside of events (using jQuery)?
Not possible. You can however use the same approach in the tutorial to store the position in a global variable and read it outside the event. Like this: jQuery(document).ready(function(){ $().mousemove(function(e){ window.mouseXPos = e.pageX; window.mouseYPos = e.pageY; }); }) You can now use window.mouseXPos and window.mouseYPos from anywhere.
jQuery .on(); vs JavaScript .addEventListener();
When you use .on() at the document level, you’re waiting for the event to bubble all the way up to that point. The event handler for any intermediate container will already have been called. Event “bubbling” is the process by which the browser looks for event handlers registered with parents of the element that was … Read more
JSpinner Value change Events
The answer is to configure the formatter used in the JFormattedTextField which is a child of the spinner’s editor: formatter.setCommitsOnValidEdit(true); Unfortunately, getting one’s hand on it is as long and dirty as the introductory sentence: final JSpinner spinner = new JSpinner(); JComponent comp = spinner.getEditor(); JFormattedTextField field = (JFormattedTextField) comp.getComponent(0); DefaultFormatter formatter = (DefaultFormatter) field.getFormatter(); … Read more
onclick=”” vs event handler
One big argument against inline event handlers, and the argument that is addressed by the other answers here is the separation of presentation and logic. However, there is actually a bigger problem IMO: The somehow elusive way how inline event handlers are evaluated. As you may know, the content of the on* attributes will be … Read more