For more in-depth resources, check out our content hub on Selenium JavaScript Tutorial. There are many options when it comes to putting your program to sleep (or insert delays in the program). When performing Selenium, the Sleep function will cause the execution of your code to halt for a...
如前所述,setTimeout 非常适合在延迟后触发一次性操作,但也可以使用 setTimeout(或其表亲 setInterval)来让JavaScript等待直到满足某个条件。例如,下面是如何使用 setTimeout 等待某个元素出现在网页上的方式: 复制 functionpollDOM(){ const el=document.querySelector('my-element');if(el.length){// Do some...
如前所述,setTimeout非常适合在延迟后触发一次性操作,但也可以使用setTimeout(或其表亲setInterval)来让JavaScript等待直到满足某个条件。例如,下面是如何使用setTimeout等待某个元素出现在网页上的方式: functionpollDOM(){ const el = document.querySelector('my-element');if(el.length) {// Do something wit...
代码语言:javascript 复制 functiongreet(){alert('Howdy!');}setTimeout(greet,2000); 它可以是一个指向函数的变量(函数表达式): 代码语言:javascript 复制 constgreet=function(){alert('Howdy!');};setTimeout(greet,2000); 或者它可以是一个匿名函数(在这种情况下是箭头函数): 代码语言:javascript 复制 set...
Many programming languages have asleepfunction that will delay a program’s execution for a given number of seconds. This functionality is absent from JavaScript, however, owing to its asynchronous nature. In this article, we’ll look briefly at why this might be, then how we can implement asl...
let promise = new Promise(function(resolve, reject) { }); 对于一个任务来说,任务最终状态有两种: 一种是执行成功、一种是执行失败。参数resolve和reject是由JavaScript自身提供的回调,是两个函数, 由 JavaScript 引擎预先定义,因此我们只需要在任务的成功的时候调用resolve,失败的时候reject即可。注意任务的最终状...
function Func1(){alert("Delayed 3 seconds"); } function Func1Delay(){setTimeout("Func1()",3000); } Then you simply callFunc1Delay()which in turn callsFunc1()but with a delay of 3000 milliseconds (3 seconds): Nathan Nathan Pakovskie is an esteemed ...
代码语言:javascript 复制 intpcntl_wait(int&$status[,int $options=0]) The wait function suspends execution of the current process until a child has exited, or until a signal is delivered whose action is to terminate the current process or to call a signal handling function. If a child has...
ThesysLib.wait()system function suspends the current process for a specified amount of time. UsesysLib.wait()when two asynchronously running programs need to communicate through a record in a shared file or database. For example, you can use the function to suspend processing on one program unt...
Hello. How is possible to wait until javascript function on client side stop execution or return value in AjaxEvent I use this on uniButton.OnClick var myMemo : TuniMemo begin UniSession.AddJS (' var xhttp = new XMLHttpRequest();' + ' xhttp.timeout = 200