Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

jquery countdown - specify start and end times?

Posted on 2011-09-25
8
Medium Priority
?
2,482 Views
Last Modified: 2012-06-27
I'm using the jquery_countdown script (http://keith-wood.name/countdownRef.html#since) in conjunction with PHP.  I'm trying to countdown three minutes from a time value I'm pulling from the database, but I can't figure out how to designate a countdown from a specified time...

So, my query returns:

    1316967265

And, assuming that the current time is <= 3 minutes, I want to initiate the countdown.  

So, if the current time is 1316967445, then the time starts at 3 minutes and counts down.
 
If the current time is 1316967385, the time starts at 2 minutes and counts down.
If the current time is 1316967565, the timer shows that time is up.
0
Comment
Question by:n00b0101
8 Comments
 
LVL 75

Accepted Solution

by:
Michel Plungjan earned 1000 total points
ID: 36597412
Is it very simple.

Your php is returning a timestamp in seconds since Epoch (1/1/1970)

you just need to create a date from it

until : new Date(<?PHP echo $num ?>*1000)


Here are some calculations you may want

var now = new Date()
var then = new Date(num*1000);
var diff = then.getTime()-now.getTime();
var diffInSecs = parseInt(diff/1000);
var diffInMins = parseInt(diffInSecs/60)
0
 
LVL 111

Expert Comment

by:Ray Paseur
ID: 36598301
This should help illustrate the moving parts.
http://www.laprbass.com/RAY_temp_noob.php
<?php // RAY_temp_noob.php
error_reporting(E_ALL);

// SEE http://www.experts-exchange.com/Programming/Languages/Scripting/JavaScript/Q_27322730.html

// SET THE TIMER VALUES - THESE COULD COME FROM A DATA BASE
$startTime = 1316967265;
$otherTime = 1316967385;

// DETERMINE THE ELAPSED TIME
$lapseTime = $otherTime - $startTime;

// END OF PHP - DROP INTO HTML AND JAVASCRIPT
?>

<script type="text/javascript">
var interval = "";
var seconds  = <?php echo $lapseTime; ?>;

function startInterval()
{
    interval = window.setInterval("tTimer()",1000);
}

function stopInterval()
{
    window.clearInterval (interval);
    interval="";
}

function tTimer()
{
    document.lapseTime.tDisplay.value = seconds--;

    if (sekonds == -1)
    {
        stopInterval();
    }
}

</script>

<script>
document.write('<meta http-equiv=\"Refresh\" content=\"<?php echo $lapseTime; ?>;url=http://lmgtfy.com?q=jQuery+Timer\">');
</script>

<form name="lapseTime">
This page will search for a JQuery Timer in
<input readonly class="timerBox" size="1" type="text" name="tDisplay" value="">
<script>startInterval();</script>
seconds.
</form>
<br/>
<a href="http://lmgtfy.com?q=Jquery+Timer">Click here if you don't want to wait.</a>

Open in new window

0
 
LVL 75

Expert Comment

by:Michel Plungjan
ID: 36598485
Ray: Not sure what your comment has to do with the current issue ...
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 111

Expert Comment

by:Ray Paseur
ID: 36598550
Hi, Michel.  Try running it.  It's not very sophisticated - it just shows a countdown timer in action.  When the timer expires, a new page is loaded via the meta-refresh.  

If a part of the question is, "How do I work with timestamps in PHP?"  -- this article may offer some help.
http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/A_201-Handling-date-and-time-in-PHP-and-MySQL.html

Best regards, ~Ray
0
 
LVL 75

Expert Comment

by:Michel Plungjan
ID: 36598857
However the question was related to a jQuery counter

Actually I thin he wanted

var d = new Date(<?PHP echo $num ?>*1000)
var until = d.setMinutes(d.getMinutes()+3)

until : until
0
 
LVL 26

Assisted Solution

by:EddieShipman
EddieShipman earned 1000 total points
ID: 36599299
Here's some code I use showing how to use that countdown timer. This one counts down until midnight the next day but I modified to show how to set it to 3 min from a time pulled from your DB.
 var start   = new Date(/* time pulled from the DB*/); // Make sure you format it correctly (This is a javascript date)
 var yr      = start.getFullYear();
 var mon     = start.getMonth();
 var day     = start.getDate();
 var hour    = start.getHours();
 var minute  = start.getMinutes()+3;
 var EndTime = new Date(yr, mon, day, hour, minutes, 0, 0);
 $('#cdt').countdown({until: dealEndTime,
                      onTick: highlightLastMin,
                      description: "<span id='cd_desc'>Until this ends</span>",
                      layout:'<span class="countdown_amount">{hn}:{m10}{m1}:{s10}{s1}</span><br />{hl}:{ml}:{sl}&nbsp;&nbsp;<br />{desc}'

Open in new window

0
 
LVL 75

Expert Comment

by:Michel Plungjan
ID: 36600743
Adding 3 minutes is

var start   = new Date(time_pulled_from_the_DB*1000); // Make sure you format it correctly (This is a javascript date)
start.setMinutes(start.getMinutes()+3)

as I already posted.

no need for
 var yr      = start.getFullYear();
 var mon     = start.getMonth();
 var day     = start.getDate();
 var hour    = start.getHours();
 var minute  = start.getMinutes()+3;
 var EndTime = new Date(yr, mon, day, hour, minutes, 0, 0);
0
 

Author Closing Comment

by:n00b0101
ID: 36601125
I wound up going with a combination of the two!  Thanks
0

Featured Post

Important Lessons on Recovering from Petya

In their most recent webinar, Skyport Systems explores ways to isolate and protect critical databases to keep the core of your company safe from harm.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article discusses four methods for overlaying images in a container on a web page
There are times when I have encountered the need to decompress a response from a PHP request. This is how it's done, but you must have control of the request and you can set the Accept-Encoding header.
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…
The viewer will learn how to create a basic form using some HTML5 and PHP for later processing. Set up your basic HTML file. Open your form tag and set the method and action attributes.: (CODE) Set up your first few inputs one for the name and …
Suggested Courses

963 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question