I'm bringing here a simple answer that solves the task without unnecessary complication. No timers, multi-tier and asynchronous.Anyway, we have a game cycle (while) that ticulates as quickly as the processor can. It should be borne in mind that the speed would be different in different processors, and it would be good to have the same speed in any processor. How can a snake movement be arranged? Obviously, there are two decisions - either on every tick to move the snake into a very small distance (which in the language of the text regime is slightly inappropriate) or to do so on every tick. In fact, the following will be an example of how not to do so on every tick.The idea is to calculate the time that has elapsed since the previous updating of the belt on the playground. If we want to move the snake to one position exactly every second, then we need to. Let's go. so many game cycle determinants that correspond to this time interval.The current time should be kept before the main cycle, and the difference between current time and time retained should be measured on each teration. If more or equal to the required interval (1 second) the necessary action is taken.auto lastUpdate = std::chrono::steady_clock::now(); char ch = 0; while (ch != 27) { auto now(std::chrono::steady_clock::now()); auto dt = now - lastUpdate; if (dt >= std::chrono::seconds(1)) { lastUpdate = now; // здесь производим необходимые действия - тоесть сдвигаем змейку на 1 позициию } if (kbhit()) { // обработка ввода ch = getch(); } std::this_thread::sleep_for(std::chrono::milliseconds(10)); }

Documentation http://php.net/manual/ru/class.dateinterval.php There's no indication for weeks, maybe the weeks were in the earlier version of the PHP, then they were removed. Two things can be done in this case:Recognize the PHP version on the old server and try to put it on the new one.Remove or replace the obsolete code.Besides, you spend weeks together with days, which is wrong with PHP: http://php.net/manual/ru/dateinterval.construct.php W-weeks. Transformed on days, so it cannot be used with D.Well, the last question, I don't understand why this code is, if you've already calculated the interval here? $interval = $datetime1->diff($datetime2, false);

Better do it on JS. For example://Задаем дату от которой будет веститсь отсчет показов var startDate = new Date(2016, 8, 1, 12) var div = [] div[0] = document.getElementsByClassName('day1')[0] div[1] = document.getElementsByClassName('day2')[0] div[2] = document.getElementsByClassName('day3')[0] function millisecondsToDays(milliseconds) { return Math.floor(milliseconds/1000/60/60/24) } function updateVisibility() { //Скрываем все элементы div.forEach(function(item) { item.style.display = 'none'; }) var now = new Date(); //Открываем элемент, который должен быть показан сегодня div[millisecondsToDays(now - startDate) % div.length].style.display = 'block'; //Рассчитываем время до следующего обновления var nextUpdate = Date(now.getFullYear(), now.getMonth(), now.getDate() + 1, 12) //Ставим таймер на следующее обновление setTimeout(updateVisibility, nextUpdate - now) } updateVisibility();<div class="day1">1</div> <div class="day2">2</div> <div class="day3">3</div>Update:You can use this function to show all the elements.function showAll() { div.forEach(function(item) { item.style.display = 'block'; }) }

Please... https://jsfiddle.net/knvnckbz/4/ var div = document.querySelector('div'), addTimeout = null, removeTimeout = null, classNames = []; div.addEventListener('mouseover', addClass); div.addEventListener('mouseout', removeClass); function addClass() { clearTimeout(removeTimeout); var className = 'number_' + (classNames.length); div.classList.add(className); classNames.push(className); addTimeout = setTimeout(addClass, 1000); } function removeClass() { clearTimeout(addTimeout); var className = classNames.pop(); if (!className) return; div.classList.remove(className); removeTimeout = setTimeout(removeClass, 1000); }div { width: 100px; height: 100px; background: black; } .number_1 { background: red; } .number_2 { background: blue; } .number_3 { background: yellow; }<div> </div>

Call attention. http://javascript.ru/switch ♪ Turn the functions into the switch/case and provide the condition: you can control the challenge.

I'm setting an example using the library. https://developer.gnome.org/glib/ But working with flows is similar to those of suddenly-- libraries.create a structure where the two-way processed typedef struct _data_s data_s; struct _data_s { int first; }; Creating a semaphore controlling access to dataGMutex mutex; create a separate flow function that will process datastatic gpointer thread_fun(gpointer d) { data_s * data = (data_s*)d; for(;;){ int local_first; /*чтение данных*/ g_mutex_lock(&mutex); local_first = data->first; g_mutex_unlock(&mutex); /обработка данных/ .... /*запись данных*/ g_mutex_lock(&mutex); data->first = local_first; g_mutex_unlock(&mutex); /если требуется накопление данных/ g_usleep(TIMEOUT); } return NULL; ♪and in the main function of flow, accumulate the data and transfer them to the processing streamint main(int argc,char * argv[]) { GThread * thread; data_s data; data.first = 5; g_mutex_init(&mutex); thread = g_thread_new("data",thread_fun,&data); for(;;){ g_mutex_lock(&mutex); data->first = read(); g_mutex_unlock(&mutex); } return 0; }

Here. I think you'll figure it out.var TIMEOUT = 15; // sec function showTime(t) { document.getElementById("time").innerHTML = (t != 0) ? t : ""; } function timer(t) { document.getElementById("btn").disabled = true; if (t == undefined) t = TIMEOUT; showTime(t); var interval = setInterval(function() { --t; showTime(t); if (t <= 0) { clearInterval(interval); document.getElementById("btn").disabled = false; } }, 1000); } function onClick() { document.cookie = "timeout=" + new Date(); timer(); } function getCookie(name) { var matches = document.cookie.match( new RegExp("(?:^|; )" + name.replace(/([.$?|{}()[]\/+^])/g, '\$1') + "=([^;])") ); return matches ? decodeURIComponent(matches[1]) : undefined; } function onLoad() { var prevStartTime = new Date(getCookie("timeout")); var delta = TIMEOUT - Math.round((new Date() - prevStartTime) / 1000); if (delta > 0) { timer(delta); } }<body onload="onLoad();"> <button id="btn" onclick="onClick();">Click me!</button> <br /> <span id="time"></span> </body>Details on the pieces https://learn.javascript.ru/cookie ♪ He stole the function. getCookie♪

The reason is this System.Windows.Forms♪ TimerUse it. System.Threading.Timer In the sunflower applications and WinForms, too. Or System.Timers.Timerlike the commentaries.

upd.2 Updated FY calendiffin order to properly consider cases where &quot; retrieve &quot; is not one, but two months, to compensate for shifts in the days. In order to compensate for the 31 days, adding the days of the previous one month (30 days) is not sufficient, it is necessary to come in the previous month.upd. It appears that the precise “calendar” distance between two dates, 28 January and 28 February (31 days days) and 28 February (28 days) should be considered, in both cases 1 month sharp. That's why. https://github.com/sergiks/calendiff.js/blob/master/calendiff.js?ts=2 for such a “human” account of the difference between the two dates.Since the marking is repeated, it's only a class name, it's a function. jQuery elements are sufficient to be found once, and then to be treated safely, instead of looking again at DOM trees at each challenge. Added the function https://habrahabr.ru/post/105428/ depending on the number (Day, Day, Day). The style added colors to the columns of the year and the month.// допустимые форматы времени: // https://tools.ietf.org/html/rfc2822#page-14 // https://www.w3.org/TR/NOTE-datetime // Напр. 1 декабря 2018, полдень по Москве: var end = new Date('2018-12-01T12:00+03:00') ,offset = (new Date().getTimezoneOffset())*6E4 ,timer ,$el ,key ,html = '' ; // generate markup html = ['years','months','days','hours','minutes','seconds'] .reduce( function(p,c){ return p += makeHtml(c);}, ''); $('.widget--countdown__chart > .chart').html(html); $el = { // найти один раз и запомнить Y: { n: $('.chart__bar--years .chart__bar-number'), l: $('.chart__bar--years .chart__bar-label'), b: $('.chart__bar--years') } ,M: { n: $('.chart__bar--months .chart__bar-number'), l: $('.chart__bar--months .chart__bar-label'), b: $('.chart__bar--months') } ,D: { n: $('.chart__bar--days .chart__bar-number'), l: $('.chart__bar--days .chart__bar-label'), b: $('.chart__bar--days') } ,h: { n: $('.chart__bar--hours .chart__bar-number'), l: $('.chart__bar--hours .chart__bar-label'), b: $('.chart__bar--hours') } ,m: { n: $('.chart__bar--minutes .chart__bar-number'), l: $('.chart__bar--minutes .chart__bar-label'), b: $('.chart__bar--minutes') } ,s: { n: $('.chart__bar--seconds .chart__bar-number'), l: $('.chart__bar--seconds .chart__bar-label'), b: $('.chart__bar--seconds') } } /** генерирует html одного блока */ function makeHtml(key) { return [ '<div class="chart__bar chart__bar--%KEY%">', ' <div class="chart__bar-content"> ', ' <div class="chart__bar-number"></div> ', ' <div class="chart__bar-label"></div> ', ' </div> ', '</div> ', ].join("\n").replace(/%KEY%/g, key); } function showRemaining() { var start = new Date(), r; if( end - start < 0) return timeHasCome(); r = calendiff( start, end); render( 'Y', r.years, ['Год','Года','Лет'], 3); // сколько максимум лет может быть? render( 'M', r.months, ['Месяц','Месяца','Месяцев'], 12); render( 'D', r.days, ['День','Дня','Дней'], 31); render( 'h', r.hours, ['Час','Часа','Часов'], 24); render( 'm', r.minutes, ['Минута','Минуты','Минут'], 60); render( 's', r.seconds, ['Секунда','Секунды','Секунд'], 60); } /** Когда отсчёт закончился, или время уже прошло */ function timeHasCome() { if(timer) { window.clearInterval( timer); timer = undefined; } $('.widget.widget--countdown').html('<div class="done">Баста, карапузики!</div>'); } function render( key, n, s, max) { $el[key].n.text( ('0' + n).slice(-2)); $el[key].l.text( getNumEnding(n, s)); $el[key].b.css('height', ((n / max) * 100) + '%'); } /** Calendar difference between two dates @param Date object dateIn start date @param Date object dateOut end date @return object with int properties "years", "months", "days", "hours", "minutes" and "seconds" https://github.com/sergiks/calendiff.js @author Sergei Sokolov <hello@sergeisokolov.com> */ function calendiff( dateIn, dateOut) { var out = { years : 0 ,months : 0 ,days : 0 ,hours : 0 ,minutes : 0 ,seconds : 0 } ,sign = 1 ,diff = 0 ,proto ,monthsShift ,prop ; // check input proto = Object.prototype.toString.call(dateIn); if( proto !== '[object Date]') { dateIn = new Date( dateIn); if( isNaN( dateIn.getTime())) throw 'Incorrect "In" date format'; } proto = Object.prototype.toString.call(dateOut); if( proto !== '[object Date]') { dateOut = new Date( dateOut); if( isNaN( dateOut.getTime())) throw 'Incorrect "Out" date format'; } // check numeric difference diff = dateOut.getTime() - dateIn.getTime(); if( diff === 0) { return out; } else if( diff < 0) { sign = -1; dateOut = [dateIn, dateIn = dateOut][0]; // swap the dates } // calculate human-readable difference out.seconds += dateOut.getSeconds() - dateIn.getSeconds(); if( out.seconds < 0) { out.seconds += 60; out.minutes--; } out.minutes += dateOut.getMinutes() - dateIn.getMinutes(); if( out.minutes < 0) { out.minutes += 60; out.hours--; } out.hours += dateOut.getHours() - dateIn.getHours(); if( out.hours < 0) { out.hours += 24; out.days--; } // complex part: a month can have various number of days // when entering with a negative number of days, up to -31, // it might take up to two months shift back // should the preceding month only have 28, 29 or 30 days. out.days += dateOut.getDate() - dateIn.getDate(); while( out.days < 0) { monthsShift = 0; out.days += new Date( dateOut.getFullYear(), dateOut.getMonth() - monthsShift, 0).getDate(); monthsShift++; out.months--; } out.months += dateOut.getMonth() - dateIn.getMonth(); if( out.months < 0) { out.months += 12; out.years--; } out.years += dateOut.getFullYear() - dateIn.getFullYear(); // negative difference case if( sign < 0) for( prop in out) if( out[prop]) out[prop] *= -1; // avoid -0 values return out; } /** Функция возвращает окончание для множественного числа слова на основании числа и массива окончаний param iNumber Integer Число на основе которого нужно сформировать окончание param aEndings Array Массив слов или окончаний для чисел (1, 4, 5), например ['яблоко', 'яблока', 'яблок'] return String */ function getNumEnding(iNumber, aEndings) { var sEnding, i; iNumber = iNumber % 100; if (iNumber>=11 && iNumber<=19) { sEnding=aEndings[2]; } else { i = iNumber % 10; switch (i) { case (1): sEnding = aEndings[0]; break; case (2): case (3): case (4): sEnding = aEndings[1]; break; default: sEnding = aEndings[2]; } } return sEnding; } timer = setInterval(showRemaining, 200);.widget { position: absolute; top: 0; bottom: 0; left: 0; right: 0; height: 100%; width: 100%; } .widget__foreground { position: absolute; top: 0px; bottom: 0px; left: 0px; right: 0px; } .widget--countdown__main { position: absolute; width: 50%; left: 50px; top: 120px; font-family: PT Serif Caption,Georgia,Times New Roman,Times,serif; color: #000000; text-shadow: #fff 1px 0px, #fff 1px 1px, #fff 0px 1px, #fff -1px 1px, #fff -1px 0px, #fff -1px -1px, #fff 0px -1px, #fff 1px -1px, #fff 0 0 3px, #fff 0 0 3px, #fff 0 0 3px, #fff 0 0 3px, #fff 0 0 3px, #fff 0 0 3px, #fff 0 0 3px, #fff 0 0 3px; } .widget--countdown__title { font-size: 36px; line-height: 42px; font-weight: 700; margin: 0 50px 20px 0; } .widget--countdown__supporting-text { margin-bottom: 25px; line-height: 17px; width: 50%; } .widget--countdown__chart { height: 100%; width: 50%; max-width: 470px; position: absolute; right: 50px; } .chart { position: absolute; top: 0px; bottom: 0px; left: 0px; right: 0px; display: flex; justify-content: space-between; } .chart__bar { width: 23%; position: relative; display: inline-block; align-self: flex-end; -webkit-transition: all linear .2s; -moz-transition: all linear .2s; -ms-transition: all linear .2s; -o-transition: all linear .2s; transition: all linear .2s; } .chart__bar-content { position: absolute; bottom: 20px; width: 100%; text-align: center; } .chart__bar-number { font-size: 36px; font-weight: 300; } .chart__bar-label { text-transform: uppercase; } .chart__bar--years { background-color: rgba(228, 191, 0, .90); box-shadow: 0px 0px 40px -5px rgba(228, 191, 0, .90); } .chart__bar--months { background-color: rgba(207, 108, 249, .90); box-shadow: 0px 0px 40px -5px rgba(207, 108, 249, .90); } .chart__bar--days { background-color: rgba(0, 191, 228, .90); box-shadow: 0px 0px 40px -5px rgba(0, 191, 228, .90); } .chart__bar--hours { background-color: rgba(249, 108, 207, .90); box-shadow: 0px 0px 40px -5px rgba(249, 108, 207, .90); } .chart__bar--minutes { background-color: rgba(0, 207, 167, .90); box-shadow: 0px 0px 40px -5px rgba(0, 207, 167, .90); } .chart__bar--seconds { background-color: rgba(238, 138, 56, .90); box-shadow: 0px 0px 40px -5px rgba(238, 138, 56, .90); } .chart__bar--days,.chart__bar--hours,.chart__bar--minutes,.chart__bar--seconds { background-image: url(pattern-timer.png); background-position: bottom right; background-repeat: repeat; }<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="widget widget--countdown"> <div class="widget__foreground"> <div class="widget--countdown__chart"> <div class="chart"> </div> </div> </div> </div>

You have a function. setTimeout It works before it works. setIntervalIt turns out that when the timer reaches the unit, and the idea was to take the next zero, it works. reset() and prematurely compelling. In the end, instead of what setInterval in order to obtain a value 1, it receives 0 and reduces it by one extra unit -1.That's the idea. SetTimeout If you're not, you'll be fine without him.app.timer = (function () { var timeIsOver = true, time = 0; return { //time measured in seconds setTime: function (num) { if (typeof num !== 'number') { throw new TypeError(); } time = num; timeIsOver = false; }, start: function () { if (time === 0) return; var that = this; var intervalId = setInterval(function () { if (timeIsOver || time === 0) { mediator.publish(app.eventNames.timeIsOverEvent, null); clearInterval(intervalId); that.reset(); return; } time -= 1; console.log('time is : ' + time) mediator.publish(app.eventNames.timeTillTheEndEvent, { timeTillTheEnd: time }); }, 1000); }, reset: function () { timeIsOver = true; time = 0; } }; })()

The date in the yavascript is stored in UTC, so it is sufficient to create the final date as https://developer.mozilla.org/ru/docs/Web/JavaScript/Reference/Global_Objects/Date/UTC due time in Moscow, that is.MSC time: 2016-06-28 21:00UTC time: 2016-06-28 18:00 (MSK-3 hours)And then everything remains as it is:var finaltime = Math.floor((Date.UTC(2116, 5, 28, 21, 0, 0)) / 1000); var timerId = window.setInterval(display, 500); var el = document.getElementById("seconds"); function display() { var seconds = Math.floor((finaltime - (new Date()).getTime() / 1000)), minutes, hours, days; if (seconds <= 0) { window.clearInterval(timerId); console.log('Done'); return; } days = Math.floor(seconds / 86400); seconds = seconds % 86400; hours = zeropad(Math.floor(seconds / 3600)); seconds = seconds % 3600; minutes = zeropad(Math.floor(seconds / 60)); seconds = zeropad(seconds % 60); el.innerHTML = days + ' дней ' + hours + ":" + minutes + ":" + seconds; } function zeropad(n) { return n < 10 ? '0' + n : n.toString(); }<b id="seconds">0</b> <div id="show"></div>

My old decision is jQuery:function timer() { time_rest = ((time_rest < 0) ? 0: time_rest - 1); var hours = Math.floor(time_rest / 3600); var minutes = Math.floor((time_rest - (hours * 3600)) / 60); var seconds = Math.floor((time_rest - ((hours * 3600) + (minutes * 60)))); if(hours < 10) { hours = "0" + hours; } if(minutes < 10) { minutes = "0" + minutes; } if(seconds < 10) { seconds = "0" + seconds; } $(".hours").html(hours); $(".minutes").html(minutes); $(".seconds").html(seconds); if(time_rest == 0) { //location.reload(); // обновляем страницу, если время вышло (скрыл для теста) } } var time_now = new Date().getTime() / 1000; // текущее время в формате timestamp var time_to = new Date("21 June 2016 22:33:44").getTime() / 1000; // финальное время в формате timestamp var time_rest = Math.floor(time_to - time_now); // сколько осталось секунд до финального времени в формату timestamp // делим на 1000, т.к. ответит приходит в миллисекундах timer(); setInterval(function() { timer(); }, 1000); .timer { width: 300px; text-align: center; color: #98001A; font-size: 30px; font-family: Arial; } .timer .title { font-size: 15px; color: #000; } .timer .hours, .timer .minutes, .timer .seconds { display: inline; padding: 1.6px; } .timer .colon { display: inline; }<script src="//code.jquery.com/jquery.min.js"></script> <div class="timer"> <div class="title">До конца акции осталось:</div> <div class="hours">00</div> <div class="colon">:</div> <div class="minutes">00</div> <div class="colon">:</div> <div class="seconds">00</div> </div>

Can I ask you something?int[] time = {5}; //Чтобы внутри события был доступен, делаем в виде массива. label.setText("5"); Then put the timerTimeline timeline = new Timeline ( new KeyFrame ( Duration.millis(1000 * 60), //1000 мс * 60 сек = 1 мин ae -> { time[0]--; label.setText("" + time); } ) ); timeline.setCycleCount(5); //Ограничим число повторений timeline.play(); //Запускаем

Get in. It's only five seconds.#include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/timerfd.h> #include <poll.h> #include <err.h> #include <errno.h> static int update (const char *text, const char *fname) { FILE *f = fopen(fname, "w"); return f ? (fputs(text, f), !fclose(f)) : 0; } int main (int ac, char av[]) { int nfds, delay = 5, modify = 0; if (av[1]) if ((delay = atoi((++av))) < 1) delay = 5; char *sfname = av[1] ? av[1] : "save.txt", *line = 0, *text = strdup(""); size_t sz = 0, tsz = 0; struct pollfd fds[2] = { {0, POLLIN}, {timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK), POLLIN} }; if (fds[1].fd < 0) err(1, "timerfd_create"); struct itimerspec t = {0}; // первое срабатывание и интервал через delay сек. t.it_value.tv_sec = t.it_interval.tv_sec = delay; if (timerfd_settime(fds[1].fd, 0, &t, 0) == -1) err(1, "timerfd_settime"); while ((nfds = poll(fds, 2, -1)) > 0) { /* сразу в голову что-то не пришло, а может простейший способ это таймаут тут (третий аргумент в poll), только его надо все время пересчитывать перед poll, зная время последнего выполнения update(). */ if (fds[0].revents) { int l; if ((l = getline(&line, &sz, stdin)) == -1) { update(text, sfname); return puts("Bye") == EOF; } text = realloc(text, tsz + l + 1); strcpy(text + tsz, line); tsz += l; modify = 1; } if (fds[1].revents) { // puts("timer"); errno = 0; long long nt; while(read(fds[1].fd, &nt, sizeof(nt)) > 0); if (errno != EAGAIN) err(1, "timer read %lld", nt); if (modify) modify = update(text, sfname); } } printf("nfds = %d\n", nfds); err(1, "poll"); } What's not clear, ask.UPDATEThe simplest timer with 1 second permission.#include <stdio.h> #include <stdlib.h> #include <string.h> #include <time.h> static int update (const char *text, const char *fname) { FILE *f = fopen(fname, "w"); return f ? (fputs(text, f), !fclose(f)) : 0; } int main (int ac, char av[]) { int l, delay = 5; if (av[1]) if ((delay = atoi((++av))) < 1) delay = 5; time_t now = time(0), tlimit = now + delay; char *sfname = av[1] ? av[1] : (char *)"save.txt", *line = 0, *text = strdup(""); size_t sz = 0, tsz = 0; while ((l = getline(&line, &sz, stdin)) != -1) { text = (char *)realloc(text, tsz + l + 1); strcpy(text + tsz, line); tsz += l; if ((now = time(0)) > tlimit) { // проверяем, истек ли наш "таймер" update(text, sfname); tlimit = now + delay; // переустанавливаем на желаемый интервал } } update(text, sfname); return puts("Bye") == EOF; }

The answer depends on what your processes or flows do (let's keep talking about the flows that are called thread in the original version). The flow will indeed be performed simultaneously if you have more than one kernel. But on the question, I understand, is interested in a situation where the core is one. In this case, some flows can still be carried out in parallel. For example, while the hard drive reads the data or the network map receives the packages, the operating system can switch to another flow, and the benefits will be noticeable. If you've sent some data to the audible card, you can still do other business until it loses the sound.If you have a few fluxes that are mostly calibrated by the processor core, then there will be no gains from evaporation, and even a deceleration, that is, a change between flows is not a very cheap operation.

The exact timer is not in either WPF or any other library for one simple reason - the exact timer can only be in the real time system, all the other timers are operating at about the interval they are asked to. The only guarantee that the timers usually give is that the timer will not work before the time that he has been asked. In order to improve the accuracy, it is necessary to adjust the timeline for which you set the timer or adjust your feedback. I mean, from the back count, you'll be counting not one second at all, but the real number of seconds (millionssecond) that's gone from the last tic. In the code, it's quite simple, for starters, we'll have a variable in the class that will contain the time when the timer was started.private DateTime m_LastTimeFired; In the code where we launch the timer after we made him start:m_LastTimeFired = DateTime.Now; Then in a processor called every timer's tic, writing the following:... var elapsed = DateTime.Now - m_LastTimeFired; m_LastTimeFired = DateTime.Now; _timeToZero -= elapsed; ... P.S. The code didn't check where it was.

!function() { var delta = 100; // Интервал будет плюс-минус 100 милисекунд var ost = setTimeout setTimeout = function(f, time) { time += (Math.random() * 2 - 1) * delta ost(f, time) } }() But in general, your decision is quite strange. More frequent challenges would only lead to greater loading and the braking system, and would not help to measure the intervals more accurately.Brauser doesn't just do it because the processor's doing something else. And if at some point the processor is busy, the crypt will wake up at a time, no matter what, 20 millisecond script falls asleep or 1,000.

I think you don't understand what a timer is like when you're trying to run it a few times in the cycle. When the timer's working, he's throwing things away until it's stopped. You stop him right away, so he stops.Now how do you fix your code?Take the cycle around. timer1.Start(); - The timer is enough to start one time. Besides, your cycle, as you led it, is endless, and the program must be hanging. ♪ ♪Before timer1.Stop(); write. elsePS In general, the task is ideally on asynchronous programming. If there's possibility, try to use it instead of a timer. All different from the original program is that before void in the button compression processor write async♪ Thread.Sleep(1000) replacement await Task.Delay(1000)♪ Plus, you're gonna need a logic to block the re-pression of the button.

We can use the function. clearInterval:var timer; var time = 12; var page = "#page2"; function countDown() { time--; gett("timer_page2").innerHTML = time; if (time == 0) { clearInterval(timer); gett("timer_page2").style.display = "none"; //gett("timer_page2").innerHTML = ""; // второй вариант! window.location = page; } } function gett(id) { if (document.getElementById) return document.getElementById(id); if (document.all) return document.all.id; if (document.layers) return document.layers.id; if (window.opera) return window.opera.id; } function init() { if (gett('timer_page2')) { timer = setInterval(countDown, 1000); gett("timer_page2").innerHTML = time; } else { setTimeout(init, 50); } } document.onload = init();

The project uses a PCL library with only a few subsets.NET. Functionality which is a platform-dependent, such as System.Threading. Timer, not included in PCL.Possible options:Xamarin.Forms can be used http://iosapi.xamarin.com/?link=M%3AXamarin.Forms.Device.StartTimer Use the method https://msdn.microsoft.com/ru-ru/library/hh194873%28v=vs.110%29.aspx like, https://stackoverflow.com/questions/21151143/pcl-net-4-5-timer Make its implementation a timer based on the Task Delay as https://stackoverflow.com/questions/12555049/timer-in-portable-library Or rather radical: use Shared Library instead of PCL for the project.