event-handling | 易学教程

How to get the mouse button state in Silverlight outside of button press events?

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问题 I have the following situation I handle when the left mouse button is pressed in my Silverlight app and do some things while the mouse is held down and the mouse moves. When the left button is released, I turn off the flag that's telling it to do the stuff and the mouse movement handler then no longer does the stuff. The problem is: if the user is in the control area, pushes the left button down and moves out of the control area, then releases the button and reenters, the MouseLeftButtonUp

Globally filter ajax success handlers

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问题 I am developing a single page ASP.NET MVC 3 application. All posts are done by ajax calls. The users can see almost everything on the page but some actions requires the user to login. If an action requires login, i return a JSON {unauthenticated: true} if the user is not logged in. So i have several success handlers like: success : function(response){ if(response.unauthenticated){ showLoginDialog(); } else { doTheActualWork(); } } I want to do it in the global success handler. Like: $

casperJS page.resource.request and page.resource.response callback calls increment when opening multiple URL

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问题 I've got a small problem which has to do with the following approach: I want to iterate through a given array of URLs with a loop I do this here because I want to measure the loading time of each page which is listed in the URL List Here comes the code which is leaned to this example here (https://stackoverflow.com/a/24137013/4353553): var urls = [ 'meine-url.de/home.html', 'meine-url.de/impressum.html', 'meine-url.de/rechtliche_hinweise.html', 'meine-url.de/datenschutz.html', 'meine-url.de

Hide elements after clicking a button

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问题 Using jquery, when I click on Search from documents I want to hide all li elements which have an aria-label that contains COMPANY in the vlaue. here is my HTML: <ul class="ui-autocomplete ui-front ui-menu ui-widget ui-widget-content" id="ui-id-1" tabindex="0" style="display: none; top: 30px; left: 0px; width: 236px;"> <li class="search-documents-btn ui-menu-item" aria-label=" Search from documents »" id="ui-id-111" tabindex="-1"> Search from documents » </li> <li class="search-category

C# Simple Event Handler for Setting Alarm

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问题 Why does the following line "alarm.AlarmEvent += new AlarmEventHandler(alarm_Sound);" gives me "An object reference is required for the non-static field, method, or property 'AlarmClock.Alarm.alarm_Sound(object, System.EventArgs)'" public static void Main(string[] args) { Alarm alarm = new Alarm(new DateTime(2010, 4, 7, 23, 2, 0)); alarm.Set(); alarm.AlarmEvent += new AlarmEventHandler(alarm_Sound); } Full source code here: Program.cs AlarmEventArgs 回答1: You're adding the event handler after

How do you think about respective callback for bootstrap modal triggers?

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问题 On bootstrap modals, we know that we can bind events for triggers like show or hide using show , shown , hide , hidden , but this event binding only works for general case. What I want is 'specific case' such as: $("#myModal").modal("show", function(e){ alert("This pops-up after #myModal is shown properly."); }); or maybe using dictionaries for more options. Anyway, I want to call some functions as callback after these modal triggers are done. I do know that there can be alternative

C# Handle Event

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问题 I am trying to make sort of a library and i am trying to grasp how can i implement it they way i want. I created a minimalist example to show you what i am trying to do. using System; namespace example { public class Car { public int Price; public string ModelName; public Boolean Sold; public delegate void SellEventHandler(string str); public static event SellEventHandler _OnSell; public void OnSell(string str) { Console.WriteLine("event was fired"); } public Car(int price, string modelname)

Execute a script on f:ajax “success” event only when validation has not failed

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问题 I have created a composite component that extends the command button and add some ajax functions (onBegin, onComplete and onSuccess), but I have some problems that I couldnt solve: When I click on the button and a validation error occur, in success event function is passed #{facesContext.validationFailed} = false instead of true even thought the form is render again; (html is render before a success event called, right?) <html xmlns="http://www.w3.org/1999/xhtml" xmlns:cc="http://java.sun.com

jquery add an event handler to objects in an array

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问题 Based on this I am trying to add the click event handler to an array of objects by writing this: function addEventHandler(array, type, func) { var len = array.length; for (var i = 0; i < len; i++) { array[i].bind(type, func); } } sections = $('#sponsorship > div .section') addEventHandler(sections, 'click', function() { console.log(this); }); However, I am getting the error message: array[i].bind is not a function Can I only use actual selectors on a bind method? Any suggestions? 回答1: You may

C# add event handler literal code block

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问题 Is it possible to add a literal code block as an event handler in C#? Something like: Timer t = new Timer(1000); t.Elapsed += new ElapsedEventHandler({ Console.WriteLine("Tick"); }); You can do this in PowerShell, so I thought there might be some way to do this in C# too. 回答1: You can use a lambda expression (C# 3.0 and higher): t.Elapsed += (sender, args) => Console.WriteLine("Tick"); or an anonymous method (C# 2.0 and higher): // If you don't need the parameter values t.Elapsed += delegate