countdown

问题 I need to make a simple countdown timer from 5 to zero, with the buttons to START and STOP the counter. The only thing that I don't know is that why won't my counter stop. The code is presented below: function clock() { var myTimer = setInterval(myClock, 1000); var c = 5; function myClock() { document.getElementById("demo").innerHTML = --c; if (c == 0) { clearInterval(myTimer); alert("Reached zero"); } } } <p id="demo">5</p> <button onclick="clock()">Start counter</button> <button onclick=

问题 I have seen lots of countdown timers in JavaScript and wanted to get one working in React. I have borrowed this function I found online: secondsToTime(secs){ let hours = Math.floor(secs / (60 * 60)); let divisor_for_minutes = secs % (60 * 60); let minutes = Math.floor(divisor_for_minutes / 60); let divisor_for_seconds = divisor_for_minutes % 60; let seconds = Math.ceil(divisor_for_seconds); let obj = { "h": hours, "m": minutes, "s": seconds }; return obj; }; And then I have written this code

问题 So right now I am trying to develop an Android App for my young children. I want to set a pin or passwords on selected applications for a particular amount of time to prevent them from opening the app. For example, let's say that my daughter wants to play angry birds for some time on my phone while I am doing work. I will select my important apps like messaging, gmail, etc and put a pin or password on it for 30 minutes while she plays angry birds. After 30 minutes, I get my phone from my

问题 I want to display the timer in TextView in the format of like [ 19:59].so when i click the start button ,the timer will display like this for example,i want to set upto 20 mintues,it will display like [19:58][19:87].can anyone give some ideas or example code? 回答1: You can use the CountDownTimer . http://developer.android.com/reference/android/os/CountDownTimer.html TextView _tv = (TextView) findViewById( R.id.textView1 ); new CountDownTimer(20*60000, 1000) { public void onTick(long

问题 When i refresh the browser, the timer resets, so how to make it not reset? This is my code. Please check it. <?php echo $waktune; ?> // You can change it into seconds var detik = <?php echo $waktune; ?>; if (document.images) { parselimit = detik } function begintimer() { if (!document.images) return if (parselimit < 12) { document.getElementById("servertime").style.color = "Green"; } if (parselimit == 1) { document.getElementById("hasil").submit(); } else { parselimit -= 1 curmin = Math.floor

问题 I am making a countdown timer for an event page, i used moment js for this. Here is fiddle for this. I am calculating date difference between event date and current date (timestamp), then using "duration" method from moment js. But the time left is not coming as expected. Expected - 00:30m:00s Actual - 5h:59m:00s Code : <script> $(document).ready(function(){ var eventTime = '1366549200'; var currentTime = '1366547400'; var time = eventTime - currentTime; var duration = moment.duration(time

问题 In my application i want the user to press a button and then wait 5 mins. i know this sounds terrible but just go with it. The time remaining in the 5 min wait period should be displayed in the progress bar. I was using a CountDownTimer with a text view to countdown but my boss wants something that looks better. hence the reasoning for a progress bar. 回答1: You can do something like this.. public static final int DIALOG_DOWNLOAD_PROGRESS = 0; private ProgressDialog mProgressDialog; @Override

问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 6 years ago . I'm a beginner(Student) in programming and was assigned to create a game. The game I'm making is called boggle. In which the player have to find words in

问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 6 years ago . I'm a beginner(Student) in programming and was assigned to create a game. The game I'm making is called boggle. In which the player have to find words in

问题 I'm creating a kid's game with a timer countdown that starts after the user clicks a button. The code I'm using initiates the countdown without a problem, but I'd like the countdown to start only after the button is clicked. Here is my code: window.onload = function(){ (function(){ var counter = 5; setInterval(function() { counter--; if (counter >= 0) { span = document.getElementById("count"); span.innerHTML = counter; } if (counter === 0) { alert('sorry, out of time'); clearInterval(counter)