setinterval

问题 I'm having a problem with setInterval and jquery animate. Here is my code: function slides1() { ... $("table#agah1").animate({ "left": first1 }, "slow"); $("table#agah2").animate({ "left": first2 }, "slow"); } $(function () { cyc = setInterval("slides1()", 3000); }); When switch to another browser tab, and return after a time, the animation keep doing it without delay, for the time I've been away from the tab, and then act correct. I've added these also without any luck: $(window).focus

问题 I'm really new to jQuery but familiar with some other languages. I recently bought a quiz type script and I'm trying to add a simple 15 second timer to each question. It's only a fun quiz, so no need to worry about users playing with the javascript to increase time etc. Basically, if a user does not pick a question within 15 seconds, it will automatically go on to the next question and the timer starts over again. Answers have the .next tag, and when chosen it moves onto the next question as

问题 I need a reverse countdown timer that takes the time in seconds and returns in the form of day, hour, minute, second, and milliseconds (up to two digits, zero to 100 milliseconds). My code below has a time difference because of the delay. Also, ten milliseconds occupy a large amount of CPU to call the timer, what could be causing this? componentDidMount(){ // get the timer in second then timer * 100 this.interval = setInterval(() => { if (this.state.timer > 0){ this.setState((prevState)=>({

问题 Does the browser keep track of active setInterval and setTimeout IDs? Or is this solely up to the developer to keep track of? If it does keep track of them, is it accessible via the BOM? 回答1: It is up for the developer to keep track of. You can do so by using the returned value of the setTimeout/setInterval function and passing that value to the clearTimeout/clearInterval function - as described in other answers here. This appears to be because each browser will implement keeping track of the

问题 I am trying to print a warning or just a message after every second, like "1 second elapsed". Is there a possibility to realize that? I tried it with tic toc and a loop, but it is pretty insufficient. Furthermore I never get exactly one second. Is there a command that prints every X ms automatically? Any ideas? Thanks in advance. 回答1: Use a timer object. t = timer; t.ExecutionMode = 'fixedRate'; t.Period = 1; t.TimerFcn = @(~,~)disp('1s elapsed'); start(t) 回答2: As @Daniel suggested, timer

问题 I want to show loading animation spinner in a JQueryMobile page which is loaded w/ ajax off. The page is loaded with data-ajax="false" or rel="external" I tried on pagebeforecreate and pageshow event but its NOT working as I expected: $( '#page' ).live( 'pagebeforecreate',function(event){ $.mobile.loading('show'); }); $( '#page' ).live( 'pageshow',function(event){ $.mobile.loading('hide'); }); 回答1: There's a slight problem with your request. First, you will not be able to show/hide ajax

问题 Sorry to be a bore but having trouble restarting a setInterval with a toggle function. I get to stop it - when needed, but I cannot get it to restart when the toggle "closes" Here is my code Set the setInterval var auto_refresh = setInterval( function() { $('.holder').load('board.php'); }, 5000 ); Stop on toggle - BUT want it to start on the "reverse toggle" $('.readmore').live('click',function() { $(this).next().slideToggle('slow'); clearInterval(auto_refresh); }, function() { var auto

问题 I'm trying to set a timer so it display the seconds and min left of an user and I'm using setInterval to get the seconds and if there are 60 seconds it will reduce 1 min from the user. The thing is that I'm getting infinite foorloops every time i try to do it. something like var userObj = { name: "", min: 0, sec:0 } function timerCount() { while (userObj.sec !== 0) { console.log(userObj.min) if (userObj.sec == 0) { setInterval(function() { userObj.min--; userObj.sec = 59 }, 1000); } while

问题 I'm trying to set a timer so it display the seconds and min left of an user and I'm using setInterval to get the seconds and if there are 60 seconds it will reduce 1 min from the user. The thing is that I'm getting infinite foorloops every time i try to do it. something like var userObj = { name: "", min: 0, sec:0 } function timerCount() { while (userObj.sec !== 0) { console.log(userObj.min) if (userObj.sec == 0) { setInterval(function() { userObj.min--; userObj.sec = 59 }, 1000); } while

问题 i'm using setInterval to check if a p(html paragraph) has a certain text value. if it has it i want to clear interval an continue code flow. i'm using this in a jQuery plugin so if the paragraph has tat text value i want to clear interval and then continue with a callback function. so i tried something like this: var checkTextValue = setInterval(function(){ var textVal = $('p').text(); if(textVal == 'expectedValue'){ clearInterval(checkTextValue); callback(); } },10); and the callback