event is an Event object which is created automatically when an event is fired. Note that you don’t have to call it event (I tend to call it simply e). That Event object has a number of properties which describe the event it represents. In this case, the one you’re interested in would be target, … Read more
In the designer, add Push Button to the form right click the Push Button select “Go to slot…” select “clicked()” signal done The terms are different from .NET, so in this case we are talking about signals and slots, and the signal emitted when QPushButton is clicked is called clicked() instead of OnClick. Reading the … Read more
Update And there’s your problem – you do have to click event handlers for some a elements. In this case, the order in which you attach the handlers matters since they’ll be fired in that order. Here’s a working fiddle that shows the behaviour you want. This should be your code: $(document).ready(function(){ $(‘#tabs div.tab’).hide(); $(‘#tabs … Read more
The this inside the event listener callback will be the element that fired the event. If you want the this to be the instance of your class, then either: Bind the function to the class instance: Using Function.prototype.bind, will create a new function that its this value will always be what you specify it to … Read more
Angular digests are triggered – they don’t happen through polling. Code executes, after code is done, angular triggers a digest. Example: element.on(‘click’, function() { $scope.$apply(function() { // do some code here, after this, $digest cycle will be triggered }); }); Angular will also trigger a $digest after the compile/link phase: Compile > Link > Digest … Read more
try this: function showDiv(divId, element) { document.getElementById(divId).style.display = element.value == 1 ? ‘block’ : ‘none’; } #hidden_div { display: none; } <select id=”test” name=”form_select” onchange=”showDiv(‘hidden_div’, this)”> <option value=”0″>No</option> <option value=”1″>Yes</option> </select> <div id=”hidden_div”>This is a hidden div</div>
Here’s a demo using generics (error checks omitted): using System; using System.Reflection; static class Program { private class Sub { public event EventHandler<EventArgs> SomethingHappening; } internal static void Raise<TEventArgs>(this object source, string eventName, TEventArgs eventArgs) where TEventArgs : EventArgs { var eventDelegate = (MulticastDelegate)source.GetType().GetField(eventName, BindingFlags.Instance | BindingFlags.NonPublic).GetValue(source); if (eventDelegate != null) { foreach (var handler … Read more
Wrap the textbox inside asp:Panel tags Hide a Button that has a click event that does what you want done and give the <asp:panel> a DefaultButton Attribute with the ID of the Hidden Button. <asp:Panel runat=”server” DefaultButton=”Button1″> <asp:TextBox ID=”TextBox1″ runat=”server”></asp:TextBox> <asp:Button ID=”Button1″ runat=”server” style=”display:none” OnClick=”Button1_Click” /> </asp:Panel>
See event.stopImmediatePropagation() – http://api.jquery.com/event.stopImmediatePropagation/ According to the jQuery API docs, this method: Keeps the rest of the handlers from being executed and prevents the event from bubbling up the DOM tree.
An event is really just an “add” operation and a “remove” operation. You can’t get the value, you can’t set the value, you can’t call it – you can just subscribe a handler for the event (add) or unsubscribe one (remove). This is fine – it’s encapsulation, plain and simple. It’s up to the publisher … Read more