event-handling

问题 I know php and nodejs too,in javascript we have asynchronize programming ,so I understand meaning of event in it.but I saw Event in Yii and Zend 2 and use them too,but I can't understand the meaning of it,how it works in php and what exactly does in it? 回答1: First of all, there are no events in PHP An event is an abstraction for callback functions with their name. Typically, we'd define them as $eventName => $listener , where $listener is a callback function for the $eventName What is the

问题 There is a button and when user clicks on button, some data is saved to back-end. Issue is when user clicks on button very quickly, event handler is getting executed multiple times. This is the code var x = 1; $('#button').click(function() { // Do something // Save some data on network x++; console.log(x); }); I want this handler to get executed when user clicks on button just once. Even In case of double or tripple click, this should get executed only once. I just want to avoid quick clicks,

问题 I have a project-wide exception handler in my Windows CE app that is logging this when my app crashes in a specific scenario: Message: From application-wide exception handler: System.NullReferenceException: NullReferenceException at HHS.FrmDelivery.ReaderForm_Activated(Object sender, EventArgs e) at System.Windows.Forms.Form.OnActivated(EventArgs e) at System.Windows.Forms.Form.WnProc(WM wm, Int32 wParam, Int32 lParam) at System.Windows.Forms.Control._InternalWnProc(WM wm, Int32 wParam, Int32

问题 I'm trying to implement a function showTexfieldSettingsDialouge(Map fields) in a little 'code generator'-application, taking a Hashmap full of Strings as input, showing a swing window with iteratively created panels and text-fields, for every key mentioned in the Hashmap, and returning this Hashmap filled with the inputs by the user, after clicking a button. The Problem: To wait for the button to be clicked, I have to create an ActionListener, which runs in a new (the Swing-)Thread. How can I

问题 So i'm trying to create a web spider. I've run into a website, that has some javascript, and I want to trick the browser into thinking that an event has been fired and that it must call the corresponding javascript code to handle the event. How would I be able to do this in Perl? using the WWW::Mechanize or WWW::Scripter::Plugin::Javascript? Also, it would be very appreciated I someone could put up an example of how to use WWW::Scripter::Plugin::Javascript. Thanks in advance. Also if someone

问题 I am using the following code to direct the results from a form to a specific div. $(window).load(function () { $("#form1").submit(function() { $.post($(this).attr("action"), $(this).serialize(), function(html) { $("#resultsDiv").html(html); }); return false; // prevent normal submit }); }); How can I apply this (or any) handler to future forms that may be created within an updated div ( with new yet to created content inserted into the div at some point in the future)? I have looked at the

问题 I am making this GUI tool using wxpython. For that I have a menu and a few menu-items. Now, when I click on a particular menu-item, I have written the code for the event that handles the menu-item click. It creates a new sheet(panel, and a listctrl inside it) and adds the page to the already-created wx.Notebook object. Now, when I click on one menu-item after another, I want the tabs opened successively to be active (that is, the one that is shown to the user at that moment), whereas what

问题 I'm new to custom classes. I have a class called 'game'. In the class, I have a method called 'addGame()' that creates a dynamic picture box called 'pBox'. After creating the control, I'm doing the following to register a click event: AddHandler pBox.Click, AddressOf Me.launchGame And here is launchGame: Public Sub launchGame() MsgBox(Me.name) End Sub The problem is, "Me.name" is always the most recently added instances name, not the one I clicked on. Based on a suggestion, I also tried this:

问题 I am working on a WX-MPL app to display and interactively process data based on user input. I am having a difficulties setting up the MPL mouse events to work within the WX app. The goal is to have a series of editable vertical lines that delineate the begin and end times for features which have been identified in earlier processing. Users should be able to drag the lines along the x-axis, delete unwanted lines, and insert new lines. So far I have been able to achieve this functionality using

问题 In the following example: <div class="sub-list" ng-repeat="item in list.subItems"> <a class="list-row" href="#"> <span class="list-cell name">item.name</span> <span class="list-cell dt">item.dt</span> <span class="list-cell summary"> <span class="sub-list-item" ng-click="page.updateSubStatus(item); $event.stopPropagation();">Click</span> </span> <span class="list-cell list-row-link-icon"></span> </a> </div> When I click on the span href action is also invoked due to event bubbling. I even