setinterval

Two questions: How is the value returned from setInterval and setTimeout (the ones used to clear the timers) calculated? Is it possible for both the functions to return the same value during runtime? For example: var a = setInterval(fn1, 1000); var b = setTimeout(fn2, 1000); Is it possible for a and b to have the same value? The first one is more of a for-my-knowledge question, but the second one is more important. cgp Returns a value which can be used to cancel the timer. So, it would seem unlikely that they return the same value (unless they are reusing values and one of the timers has

How do I reset a setInterval timer back to 0? var myTimer = setInterval(function() { console.log('idle'); }, 4000); I tried clearInterval(myTimer) but that completely stops the interval. I want it to restart from 0. If by "restart", you mean to start a new 4 second interval at this moment, then you must stop and restart the timer. function myFn() {console.log('idle');} var myTimer = setInterval(myFn, 4000); // Then, later at some future time, // to restart a new 4 second interval starting at this exact moment in time clearInterval(myTimer); myTimer = setInterval(myFn, 4000); You could also use

This question already has an answer here: Stop setInterval call in JavaScript 11 answers How do I stop and start setInterval ? Suppose I have a textarea . I want to stop setInterval on focus and restart setInterval on blur (with jQuery). You have to store the timer id of the interval when you start it, you will use this value later to stop it, using the clearInterval function: $(function () { var timerId = 0; $('textarea').focus(function () { timerId = setInterval(function () { // interval function body }, 1000); }); $('textarea').blur(function () { clearInterval(timerId); }); }); SDG This is

Html 及 JS 代码如下： <div id="newsOne" οnmοuseοver="CleartTimeInterVal();" οnmοuseοut="resetInterVal();" style="position: absolute; width: 100px;"> <a href=" http://www.baidu.com" target="_blank">test Div</a> </div> <script type='text/javascript'> var newsOne = document.getElementById("newsOne"); newsOne.style.bottom = 0; newsOne.style.left = window.screen.availWidth - 100; var bottom = 0; function newsScroll() { if (bottom > (window.screen.availHeight - window.screenTop)) { bottom = 0; newsOne.style.bottom = 0; } else { bottom = bottom + 15; newsOne.style.bottom = bottom; } } var timeid =

I'm writing an application that utilizes JavaScript timeouts and intervals to update the page. Is there a way to see how many intervals are setup? I want to make sure that I'm not accidentally going to kill the browser by having hundreds of intervals setup. Is this even an issue? I don't think there is a way to enumerate active timers, but you could override window.setTimeout and window.clearTimeout and replace them with your own implementations which do some tracking and then call the originals. window.originalSetTimeout=window.setTimeout; window.originalClearTimeout=window.clearTimeout;

Does Python have a function similar to JavaScript's setInterval() ? Thanks stamat This might be the correct snippet you were looking for: import threading def set_interval(func, sec): def func_wrapper(): set_interval(func, sec) func() t = threading.Timer(sec, func_wrapper) t.start() return t Just keep it nice and simple. import threading def setInterval(func,time): e = threading.Event() while not e.wait(time): func() def foo(): print "hello" # using setInterval(foo,5) # output: hello hello . . . EDIT : This code is non-blocking import threading class ThreadJob(threading.Thread): def __init__

简单介绍 JavaScript分为 ECMAScript，DOM，BOM。 BOM（Browser Object Model）是指浏览器对象模型，它使 JavaScript 有能力与浏览器进行“对话”。 DOM （Document Object Model）是指文档对象模型，通过它，可以访问HTML文档的所有元素。 Window对象是客户端JavaScript最高层对象之一，由于window对象是其它大部分对象的共同祖先，在调用window对象的方法和属性时，可以省略window对象的引用。例如：window.document.write()可以简写成：document.write()。 window对象 所有的浏览器都支持widow对象，它表示浏览器窗口。 如果文档包含框架(frame或者iframe标签)，浏览器会为HTML文档创建一个window对象，并未每个框架创建一个额外的windows对象。 没有应用于window对象的公开标准，不过所有浏览器都支持该对象。 所有JavaScript全局对象、函数以及变量军自动成为window对象的成员。 全局变量是window对象的属性。全局函数时window对象的方法。 HTML DOM的document也是window对象的属性值一。 一些常用的window方法： window.innerHeight 浏览器窗口的内部高度