timer

问题 This question already has answers here : what is the difference between calling function in JavaScript with or without parentheses () (3 answers) Closed 6 years ago . I have a script that counts up the number in a box (actually, in this exercise -> http://jqexercise.droppages.com/#page_0022_ ) each 1 second like this. var target = $("#target input"); var countUp = function(){ target.val(parseInt(target.val())+1); setTimeout(countUp,1000); // this line }; countUp(); My questions is, when i

问题 I have a countdown timer and when ever I rapidly press f5 the timer freezes. im guessing this is because the page reloads before the setInterval. i'm looking for a way to reload the page and at the same time keep the timer running whats happening is the page reloads before the setInterval could even finish <h3 style="color:#000000" align="center"> Time Remaining : <span id='timer'></span> </h3> <script type="text/javascript" src="jquery-1.11.3.min.js"></script> <script> //define your time in

问题 I am working on my app for Windows Phone 8 and i created a DispatcherTimer DispatcherTimer Timer= new DispatcherTimer(); private int TimePass; public TapFast() { TimePass = 0; Timer.Tick += new EventHandler(TimePassTick); Timer.Interval = TimeSpan.FromMilliseconds(1); InitializeComponent(); } public void TimePassTick(Object sender, EventArgs args) { TimePass++; TimeSpan t = TimeSpan.FromMilliseconds(TimePass); string answer = string.Format("{0:D2}h:{1:D2}m:{2:D2}s:{3:D4}ms", t.Hours, t

问题 TL;DR: How can I give one intent a preference over another? If two intents are run at the same time, I want only one of those intents to start. My game has a 20 second timer running in the background service, and when that timer ends, a new activity (game over screen) starts through an intent. The user is pressing buttons to change activities (again, through intent) in those 20 seconds. The problem is, if the user pushes a button at the same time that the timer ends, the next activity starts

问题 my situation is explained here: Closing multiple new form [VB.NET] i have three forms: the main form(A), a secondary form (B) and third form (C). The form A must be always visibile and usable, the form B opening from form A and the form C opening form the form B. I open multiple instance of form C (i do not know how much instance are) and i'm using this code in a command button on form B: Dim newform As New modifica_normale newform.LoadOrders(commessa_da_modificare, id_da_modificare, False)

问题 imagine that i have a web page in my application for inputing data and there is a grid at the bottom of them (showing inputing data)... i want to force this web page acts like a windows application (mean i do not want any postback after enter and that grid should be updated after inputing data without postback)... imagine that i opened this page in my pc and my friend has opened this page too / i want when i input data in ajax mode , that grid updated for my friend without any postback / like

问题 I hope I am asking this correctly... What I am looking to do is ping a server every 30 minutes to an hour or so and to send an email if the server is not pingable. At the moment, all I have is the following code: Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click If My.Computer.Network.Ping("209.85.143.99") Then MsgBox("Server pinged successfully.") Else MsgBox("Ping request timed out.") End If End Sub I am creating the project in

问题 I have a database that logs the date and time a song was played in a format like 2011-04-13 17:55:46. It also logs the length of the song in milliseconds. How would I make a live countdown for the user to see as well as a refresh countdown? 回答1: For Javascript, you can use the Date() object created from a string with the given time (you can print it to the screen in a hidden input, span, or whatever). I assume the end time is when the song ends. You can calculate this very simply based on the

问题 I have a .NET form with a System.Windows.Forms.Timer declared using the VS designer. The timer works fine. After I close the form, the timer doesn't fire events even if I recreate the Timer object. I've configured the Form to never close using this: void MainFormFormClosing(object sender, FormClosingEventArgs e) { // never close e.Cancel = true; // only hide this.Visible = false; } How do I make the timer fire events? What am I doing wrong? 回答1: I just tried this one. Added a WinForms Timer

问题 In Java Swing I used the Swing Timer (not util Timer) to do it. The code looks like this: Timer timer = new Timer(1000, new ActionListener() { @Override public void actionPerformed(ActionEvent e) { try { // "Hello there" is printed out after the 1000 miliseconds System.out.Println("Hello there"); } catch (Exception e1) { } } }); timer.setRepeats(false); timer.start(); But I heard it's best not to use Swing imports in JavaFX programs. I've searched so much but I still can't find out how I can