I want to use flipclock for the reverse counter. The timer should start from hh:mm:ss (eg, 19:40:46) to 00:00:00.
Below is the code
var clock;
$(document).ready(function() {
// Grab the current date
var currentDate = new Date();
// Set some date in the future. In this case, it's always Jan 1
var futureDate = new Date(currentDate.getFullYear() + 1, 0, 1);
// Calculate the difference in seconds between the future and current date
var diff = futureDate.getTime() / 1000 - currentDate.getTime() / 1000;
// Instantiate a coutdown FlipClock
clock = $('.dw_clock').FlipClock(diff, {
clockFace: 'DailyCounter',
countdown: true,
showSeconds: true
});
});
I don't want the date. Also, the time values should get fetched from MySQL and are different for different users when they log in. From PHP-MySQL, I have:
function timeToPlay(&$smarty){
$sqlStr = "select timediff('24:00:00', time(taken_on)) as timeRemaining,
hour(timediff('24:00:00', time(taken_on))) as hour,
minute(timediff('24:00:00', time(taken_on))) as minute,
second(timediff('24:00:00', time(taken_on))) as second
FROM profile_sicc_exer_score where user_id=".$_SESSION['user_id']."
order by id desc limit 1";
$sqlQuery = mysql_query($sqlStr) or die(mysql_error()."<hr>".$sqlStr);
if ( mysql_num_rows($sqlQuery) ) {
$timeToPlayNext = mysql_fetch_assoc($sqlQuery);
$smarty->assign("timeRemaining",$timeToPlayNext['timeRemaining']);
$smarty->assign("hour",$timeToPlayNext['hour']);
$smarty->assign("minute",$timeToPlayNext['minute']);
$smarty->assign("second",$timeToPlayNext['second']);
}
}
From the above code, I get the values of (example)
$timeRemaining = 19:40:46
$hour = 19
$minute = 40
$second = 46
How do I use the values in the above Flipclock code which is javascript/jquery...
For flipClock, you have to change the clockFace to "HourlyCounter", so it doesn't show the date.
After that, having the php variables, you can "echo" them into the javascript code, for example, at the end of the webpage, you can put:
<script>
clock.setTime(<?php echo $hour*3600+$minute*60+$second; ?>);
</script>
You can always put it in an "onload" function or something like that, but it should work fine with that.
You didn't left any details about the actual html page where the counter is showing, so I can't help you further this.
Good luck!
Related
We are using the following countdown function on our bidding site.
setInterval(function(){
$(".countdown").each(function(){
var seconds = $(this).data('seconds');
if(seconds > 0) {
second = seconds - 1;
$(this).data('seconds', second)
var date = new Date(null);
date.setSeconds(second);
$(this).html(date.toISOString().substr(11, 8))
}
else
{
$(this).html("Finished");
alert('finished');
}
});
}, 1000);
we pass the number of seconds where we want the counter to appear (sometimes more than once on our page:
echo "<div id=\"".$auctionid."\" class=\"countdown\" data-seconds=\"".$diff."\"></div>";
So far it should be clear an it works. Now we have a situation where when someone bids somewhere on the site - the time left for auction is prolonged for 15 seconds, which is written to mysql.
$diff variable is calculated from mysql end time, and it's passed to jQuery on page load.
The question is how to check the mysql time for that auction and sync it in jQuery counter? We had the idea to maybe check every 5 seconds and after it reaches zero to make sure it's over? Any suggestions?
It should look nice to the user.
EDIT:
This is what we have so far:
$(".countdown").each(function() {
var countdown = $(this);
var auctionid = $(this).attr('id');
var interval = setInterval(function() {
var seconds = countdown.data("seconds");
if( seconds > 0 ) {
var second = --seconds;
var date = new Date(null);
date.setSeconds(second);
countdown.data("seconds", second).html(date.toISOString().substr(11, 8))
} else {
// countdown.html("Finished <img src=\"loading.gif\" class=\"tempload\">");
startUpdateingTimeFromDatabase(auctionid);
countdown.html("Finished");
clearInterval(interval);
}
}, 1000);
});
function startUpdateingTimeFromDatabase(auctionid) {
$.getJSON("timer.php?auctionid="+auctionid, function(response) {
// console.log(response.seconds);
$(".countdown#"+auctionid).data("seconds", response.seconds);
if( response.seconds > 0 ) {
// setTimeout(startUpdateingTimeFromDatabase(auctionid), 1000);
} else {
}
});
}
This simply isn't doing what we need it to do. We need to update the seconds (query startUpdateingTimeFromDatabase) every time it reaches zero. Now I think there are two approaches. First is simply return seconds via startUpdateingTimeFromDatabase function and then do everything in the main function, second is update the div via startUpdateingTimeFromDatabase. I think first will be better but I simply can't find a way to do it properly.
Any help is appreciated. Thanks.
You store the seconds left in the elements data. So why not fetch the remaining time maybe via ajax and just pass the new seconds to the elements? Within the next interval run all times will be updated.
Something like this:
$.get("yourGetRemainingTimeScript.php", {auctionId: 1}, function(response) {
$(".countdown").data("seconds", response.seconds);
});
How you check and get the remaining time is up to you. You can set the time for all everywhere again.
$(".countdown").data("seconds", 1337);
Another hint from my side: don't loop all elements with each in the setInterval. Create the intervals inside the loop once. Then your script doesn't need to search every second again over and over for the elements.
And clear the interval when it's finished.
$(".countdown").each(function() {
var countdown = $(this);
var interval = setInterval(function() {
// do your stuff ...
// when finished stop the interval
if( finished ) {
clearInterval(interval);
}
}, 1000);
});
Full working example.
I use wordpress and I have static number for a field which is taken from sql query.
<p class="counter-number">843</p>
I would like to increase that number everyday. For example when the page is loaded default number is 843 next day it should show 844 the day after it should show 845.
How can I do this? I prefer PHP but if it is possible also can use jquery.
<?php
$now = time();
$your_date = strtotime("2010-01-01"); //Starting date
$datediff = floor(($now - $your_date)/(60*60*24));
?>
<p class="counter-number"><?=$datediff?></p>
Code taken from Finding the number of days between two dates
This way it will always show the difference from the starting date to now, in days.
jQuery Answer
You will have to setup the starting date for it to increase daily. The idea is to get the date difference and add it to that counter.
HTML
<p class="counter-number">843</p>
jQuery
jQuery(function() {
// Get Starting Number
var starting_number = parseInt(jQuery('.counter-number').text());
// Create Day difference (because it increases by 1 each day)
var preset_start_date = new Date("21/03/2015");
var current_date = new Date();
var timeDiff = Math.abs(current_date.getTime() - preset_start_date.getTime());
var diffDays = Math.ceil(timeDiff / (1000 * 3600 * 24));
var final_counter = starting_number + diffDays;
jQuery('.counter-number').text(final_counter);
});
I haven't tested it. But this is an idea to get that done.
For your case here are two ways achieve the goal.
use php
//client site php_cnt.html
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>visit_cnt</title>
</head>
<script type="text/javascript"src="http://localhost/php_cnt.php">
</script>
</html>
//server site php_cnt.php
<?php
//Here is the some logic to process the visit count
$visit_cnt = 11; // assume read it from mysql
echo "document.write($visit_cnt);";
?>
use javascript/jquery
//client site php_cnt.html
$(function() {
$.get('http://localhost/php_cnt.php',{r:Math.random()},function(cnt) {
$('. counter-number').html(cnt);
});
});
//the server site code
<?php
//Here is the some logic to process the visit count
$visit_cnt = 11; // assume read it from mysql
echo visit_cnt;
?>
Hope this can help you !
With jQuery's $.post i want to send a value to my php function , where inside it should lookup the events by it's current selected month.
Now there some programmatic problems.
First is to what value it is best to make the check against.
In theory i have all available, but the ideas i have all seem to be clumsy.
If it helps , i use the following script that does all the calculation with the data i provide it with. eventCalendar
For my testing purposes , just to make a check if the event is active or not i use the following code:
var Calendar = new Object();
Calendar.id = '1';//Check if active 1 or 0
var calendarJson = JSON.stringify(Calendar);
$('#indicator').show();
$.post('Controller.php',
{
action: 'get_events',
calendar: calendarJson
},
function(data, textStatus) {
....more code
Were the data is retrieved and handled as:
public function getEvents($calendar){
$sth = $this->dbh->prepare("SELECT * FROM events WHERE current = ?");
$sth->execute(array($calendar->id));
return json_encode($sth->fetchAll());
}
Where in the counted result the most important data = event_sdate varchar(255)
looks like:
event_sdate = 1394220775280 (milliseconds)
However my intention is to let it send back all events by it's given month.
So i have to replace current = ? with something that is inserted when create a new event.
And that should, at least it is what i think, the month and year of creation.
And when make the call to the php function:
Calendar.id = '1';//Check if active 1 or 0
Should be something like:
Calendar.id = 'March 2014';//Check if current month and year
When i load the calendar without any events yet it looks like:
this jsfiddle
I hope someone could point me in the right direction of how to achieve what i try to do
It seems i answered my own question.
Should be something like:
Calendar.id = 'March 2014';//Check if current month and year
Generated HTML contains required values:
<div id="eventCalendarInline" data-current-year="2014" data-current-month="2">
in jQuery:
var currentYear= $('#eventCalendarInline').data("current-year");
var currentMonth = $('#eventCalendarInline').data("current-month");
var Calendar = new Object();
Calendar.month = currentMonth;
Calendar.year = currentYear;
And in php:
public function getEvents($calendar){
$sth = $this->dbh->prepare("SELECT * FROM events WHERE cyear = ? AND cmonth = ?");
$sth->execute(array($calendar->year, $calendar->month));
return json_encode($sth->fetchAll());
}
So here's what I'm trying to do - I have the following code:
<div id="on">
<p>We are: <span class="onair">ON AIR</span></p>
</div>
<div id="off">
<p>We are: <span class="offair">OFF AIR</span></p>
</div>
And what I'd like to do is "show" the "on" div on Tuesday's from 3pm to 4pm (server time), while simultaneously hiding the "off" div - and then switch that around for every other date/time.
?
If you use PHP you can do logic statements on the server-side to render the exact information you need instead of calculating it later on the client side.
(Client side solutions work too if you dont care about where the time is coming from)
(1) You can have the server render javascript for you that you can use in a script
//if you want the server's time you can do this:
<?php $timestamp = time(); ?>
//render variables in javascript instead of html
<?php
echo <<<EOD
<script>
var timestamp = ${timestamp}
//then later in your javascript process the timestamp logic to update the dom
</script>
EOD;
?>
(2) You can also have the server render a className in the body tag based on whether or not a condition is true or false. (This is my preferred method usually)
//onAirClass( min, max, timestamp ) returns className
//this function returns onair or offair class if the timestamp is in range
function onAirClass( timeMin, timeMax, timestamp ){
if( timestamp >= timeMin && timestamp <= timeMax ){
return 'onair';
}
return 'offair'
}
//using onAirClass( min, max, timestamp )
<?php $bodyClass = $bodyClass . ' ' . onAirClass( $timestamp ); ?>
<?php echo "<body class='${bodyClass}'>"; ?>
then in your styles you can have the elements you want to hide or show based on class inheritance from the body tag.
Check out the PHP time function to create new time strings, and do time calculations for your onAirClass() function
How to check the time between a given time range
UPDATED
Corrected PHP syntax errors
#maerics solution is OK, depending on what you want to do, just don't EVER do anything like this:
var timestamp = $('#server-timestamp').text();
Ultimately, there are many ways to do the same thing, but some things are more 'right' than others.
There are reasons to do some calculations on the client side vs the server side, and vice versa. As a newbie developer, just make sure that whatever method you use:
is simple
is efficient (doesnt do anything unnecessary or redundant)
falls in line with best practices
Actually this can be accomplished using just JavaScript without any server-side code, by using your timezone offset.
Here's a function you can use:
var onAir = function (day, start, end, timezone) {
var local, utc, show, days, onAir, startValues, endValues, startTime, endTime, startMinutes, endMinutes, showMinutes;
// by default, we are not on air
onAir = false;
// map day numbers to indexes
days = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Firday', 'Saturday'];
// convert start/end times to date objects
startValues = start.split(':');
endValues = end.split(':');
startTime = new Date();
endTime = new Date();
startTime.setHours(startValues[0], startValues[1]);
endTime.setHours(endValues[0], endValues[1]);
// add the hours minutes together to get total minutes
startMinutes = (startTime.getHours() * 60) + startTime.getMinutes();
endMinutes = (endTime.getHours() * 60) + endTime.getMinutes();
// get the current local time
local = new Date();
// get the current time in the show's timezone
utc = local.getTime() + (local.getTimezoneOffset() * 60000);
show = new Date(utc + (3600000*timezone));
// convert the show hours + minutes to just minutes
showMinutes = (show.getHours() * 60) + show.getMinutes();
// test to see if the show is going on right now
if (days[show.getDay()] === day && (showMinutes >= startMinutes && showMinutes <= endMinutes)) {
onAir = true;
}
return onAir;
}
// example: Air time is Tuesday between 1-2pm Central Time (-6)
var texasShowOnAir = onAir('Tuesday', '13:00', '14:00', '-6'));
// now check if we are on air
if (texasShowOnAir) {
// do stuff here...
}
You can now use this function like this:
var check = onAir('DAY', 'STARTTIME', 'ENDTIME', 'YOURTIMEZONE');
This will return a true/false. Be sure and use 24 hour format.
I would even argue that this is better than using your server's timestamp, because often (especially if you have shared hosting), your server can be set in a different timezone than you.
Here's a demo fiddle: http://jsfiddle.net/stevenschobert/mv54B/
Have the server provide a timestamp when it generates the page and have the client also generate a timestamp when it loads the page so that you can calculate the time offset between the two systems.
Then you can call a function on some interval that checks the current server time to see if it is within the 3pm-4pm period and show/hide the target elements as needed.
From the server:
<div id="server-timestamp" style="display:none">2013-02-12T18:01:19Z</div>
On the client:
$(document).on('load', function() {
var serverTime = new Date($('#server-timestamp').text())
, clientTime = new Date()
, offsetMilliseconds = (clientTime - serverTime);
setInterval(function() {
// If server time is 3pm-4pm then hide/show divs...
}, 1000 /* every second */);
});
I have a quiz page with some questions (multiple choice, true-false). In the results after the submit of page i want to show something like this:
Started on Tuesday, 1 January 2013, 04:09 AM
Completed on Tuesday, 1 January 2013, 04:10 AM
Time taken 47 secs
Grade 7 out of a maximum of 10 (65%)
i dont know how to count start time and end time to show the above results and how to count the time from when user's load a page until they submit the form.
i'm new and i need your advise. i dont have problem if the problem solved with php or javascript or jquery
You can do something like this and the start and end timestamps will be submitted along with the form. You could then do the calculations with PHP.
var form = document.getElementById("form");
window.onload = function() {
var start = document.createElement("input");
start.type = "hidden";
start.name = "start";
start.value = +new Date()/1000; //unix timestamp
form.appendChild(start);
};
form.onsubmit = function() {
var stop = document.createElement("input");
stop.type = "hidden";
stop.name = "stop";
stop.value = +new Date()/1000;
form.appendChild(stop);
};
Ok here is my solution:
1- user starts the quiz and you put the time in $_SESSION var
$_SESSION['quiztime']=date("Y-m-d H:i:s");
2-User finishes the test and you check the time passed (this example is in minutes you don't have to divide it by 60 if you need seconds)
$to_time = strtotime(date("Y-m-d H:i:s"));
$from_time = strtotime($_SESSION['quiztime']);
echo round(abs($to_time - $from_time) / 60,2). " minutes";
I'd put the time started in a cookie or session, and then once they complete it, just subtract that time from the current time -- That's the time taken!
It may look like this:
Quiz page:
session_start();
$_SESSION['startTime'] = time();
// This is where the quiz would be displayed
Quiz results page:
session_start();
$totalTime = time() - $_SESSION['startTime'];
echo $totalTime;
My "bullet-proofer" solution would be to store the start time on the server, (in the session) associated with a unique id generated per-form and kept in an hidden field.
This way you prevent the user from tampering with it (he might change the unique id, but in that case the form would be invalid) and you don't depend on the client having javascript enabled.
<?php
$form_uuid = uniqid();
$_SESSION['quiz_start_time'][$form_uuid] = time();
Then, in your form, put something like this:
<input type="hidden" name="form_id" value="<?php print $form_uuid; ?>">
And in the form submit handler:
<?php
$form_uuid = $_POST['form_id'];
if (!isset($_SESSION['quiz_start_time'][$form_uuid])) {
// The user is trying to do something nasty (or the session just expired)
// Return something like a 400 error
}
else {
$start_time = $_SESSION['quiz_start_time'][$form_uuid];
// Do other form processing here..
}