wait | 易学教程

How to create javascript delay function [duplicate]

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问题 This question already has answers here : What is the JavaScript version of sleep()? (75 answers) Closed 5 years ago . I have a javascript file, and in several places I want to add a small delay, so the script would reach that point, wait 3 seconds, and then continue with the rest of the code. The best way that I thought of doing this was to create a function, which I could call from anywhere in the script. function startDelay(lengthOfDelay) { //code to make it delay for lengthOfDelay amount

Waiting for image to load in JavaScript

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问题 I'm making an Ajax call which returns me some info including an image path. I prepare all this information in my HTML which will be displayed as a kind of popup. I just toggle the visibility of by popup div from hidden to visible. To set the position of my popup div, I have to calculate depending on the height of the image. So, I have to wait for the image to load to know its dimension before setting position and switching visibility to visible. I tried tricks with recursion, setTimeout,

How to tell PowerShell to wait for each command to end before starting the next?

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问题 I have a PowerShell 1.0 script to just open a bunch of applications. The first is a virtual machine and the others are development applications. I want the virtual machine to finish booting before the rest of the applications are opened. In bash I could just say "cmd1 && cmd2" This is what I've got... C:\Applications\VirtualBox\vboxmanage startvm superdooper &"C:\Applications\NetBeans 6.5\bin\netbeans.exe" 回答1: Normally, for internal commands PowerShell does wait before starting the next

Selenium wait until document is ready

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问题 Can anyone let me how can I make selenium wait until the time the page loads completely? I want something generic, I know I can configure WebDriverWait and call something like 'find' to make it wait but I don't go that far. I just need to test that the page loads successfully and move on to next page to test. I found something in .net but couldn't make it work in java ... IWait<IWebDriver> wait = new OpenQA.Selenium.Support.UI.WebDriverWait(driver, TimeSpan.FromSeconds(30.00)); wait.Until

How do I make a delay in Java?

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问题 I am trying to do something in Java and I need something to wait / delay for an amount of seconds in a while loop. while (true) { if (i == 3) { i = 0; } ceva[i].setSelected(true); // I need to wait here ceva[i].setSelected(false); // I need to wait here i++; } I want to build a step sequencer and I'm new to Java. Any suggestions? 回答1: If you want to pause then use java.util.concurrent.TimeUnit : TimeUnit.SECONDS.sleep(1); To sleep for one second or TimeUnit.MINUTES.sleep(1); To sleep for a

线程的interrupt()

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官网解释 If this thread is blocked in an invocation of the wait() , wait(long) , or wait(long, int) methods of the Object class, or of the join() , join(long) , join(long, int) , sleep(long) , or sleep(long, int) , methods of this class, then its interrupt status will be cleared and it will receive an InterruptedException . 意思是当线程被blocked的时候可以被打断，wait()、sleep()、join()时被打断会抛出InterruptedException异常。演示sleep()被打断 Thread t1 = new Thread() { @Override public void run() { while (true) { System.out.println("running..."); try { Thread.sleep(100L); } catch (InterruptedException e) { e.printStackTrace();

sleep、yield、wait的区别

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sleep和yield都不会释放锁 sleep不出让cpu使用权，仅暂停执行 yield出让cpu使用权，但处于可运行状态 wait、notify、notifyall被调用之前需要持有锁，调用之后释放锁，是一个“等待通知机制” notify是cpu唤醒被锁的对象上随意一个线程，所以最好使用notifyall 来源： https://www.cnblogs.com/hzq3554055/p/12045829.html

c wait for stdin read?

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问题 in my application, i'm trying to achieve something like this: i have: data 0, data 1, data 2, ... data n. some parameters to pass flow: starts the program with some parameters and write data 0 into stdin the program does calculation according to the passed data "data 0" and parameters "wait" for new stdin and (clear old stdin,buffer and variables?) repeat 1 ~2 when i put data 1, data 2... and so on when reaches data n, terminate(or if i input a abort code to stdin telling the program to

How to check if explorer window is open by title in batch?

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问题 How do I check if an explorer is open or not in batch? I need to take a screenshot of the directory with a file selected, but only after the window has opened. The window title is always the same. Thanks Example: REM Opening folder with a file selected START /W EXPLORER /SELECT,\\10.10.10.10\C$\ThisFolder\FileToHighlight.txt REM Unreliably waiting for window to open TIMEOUT /T 3 /NOBREAK >NUL REM Taking screenshot of window with a third-party app START .\Bin\screenshot-cmd.exe -wt "ThisFolder

jQuery - Wait for a function to return value

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问题 I have a jquery function for sending email with ajax request; function sendMail(from,to,subject,message){ var datastr="from="+from+"&to="+to+"&subject="+subject+"&message="+message; $.ajax({ type: "POST", url: "mail.php", data: datastr, cache: false, success: function(html){ return true; }, error: function(jqXHR,status,error){ return false; } }); } now I want to tell the user if the mail was successfully sent or not like this: $("#feedback").html("Sending email..."); if(sendMail("from@email