JavaScript - Convert Time To Utc Time

I'm not really a Java writer, so I don't know how to do this myself, though I imagine it would be pretty simple.
I am looking to add a script to a webpage that allows users to input a time manually, and have it converted to GMT/Zulu time and display the converted time. I have seen a lot of time zone conversion scripts online, but they all just convert whatever the current system time is to another time zone. I am looking for a script that allows users to convert a time and show the zulu time, for times other than the current time. The time zone the inputed local time would be in is +4:30 (Kabul). I don't really care about style or aestehtics, just a simple script I can insert into a web page to have a time input field. The converted output time can appear in another field, a popup bubble, etc, again style isn't really an issue. It's really just to help people in my job who need to know what the GMT/Zulu time was for certain local times after the fact. One would think it shouldn't be that hard to just subtract 4:30 in your head, but apparently it is.

Sorry if just asking for code outright like this is frowned upon.

hi,

can some one help me how to get the time and date difference? given two time and date with the following format like in textbox A: 2011-05-03 17:35:47.0 and textbox B: 2011-05-03 16:35:47.0 then the output would be: 0 days, 1 hour, 0 minutes, 0 seconds

regards,
verve

This is my first time doing JavaScript I don't what I did wrong here, but the problem its not showing up the current date and time.
Code:

<script language = "JavaScript" type="text/javascript"> 
now = new Date(); 
localtime = now.toString();
 utctime = now.GMTString();
 document.wite("<b>localtime</b>" + localtime + "</br>");
 document.write("<b>utctime</b>" + utctime); 
 </script>

This is what supposed to look like


I have tried using different browser chrome,IE9,Maxtor, and Opera my OS is Win7

Hi there! Well, I recently found the Image clock code, and I am loving it! But, I would like it to only display pacific time, not retrieve the time from a users browser.

Here's my code:

Code:

<script type="text/javascript">

/***********************************************

* JavaScript Image Clock- by JavaScript Kit (www.javascriptkit.com)
* This notice must stay intact for usage
* Visit JavaScript Kit at http://www.javascriptkit.com/ for this script and 100s more

***********************************************/

var imageclock=new Object()
	//Enter path to clock digit images here, in order of 0-9, then "am/pm", then colon image:
	imageclock.digits=["/users/1712/49/18/66/album/c012.png", "/users/1712/49/18/66/album/c112.png", "/users/1712/49/18/66/album/c211.png", "/users/1712/49/18/66/album/c311.png", "/users/1712/49/18/66/album/c411.png", "/users/1712/49/18/66/album/c511.png", "/users/1712/49/18/66/album/c611.png", "/users/1712/49/18/66/album/c711.png", "/users/1712/49/18/66/album/c811.png", "/users/1712/49/18/66/album/c911.png", "/users/1712/49/18/66/album/cam11.png", "/users/1712/49/18/66/album/cpm13.png", "/users/1712/49/18/66/album/ccolon11.png"]
	imageclock.instances=0
	var preloadimages=[]
	for (var i=0; i<imageclock.digits.length; i++){ //preload images
		preloadimages[i]=new Image()
		preloadimages[i].src=imageclock.digits[i]
	}

	imageclock.imageHTML=function(timestring){ //return timestring (ie: 1:56:38) into string of images instead
		var sections=timestring.split(":")
		if (sections[0]=="0") //If hour field is 0 (aka 12 AM)
			sections[0]="12"
		else if (sections[0]>=13)
			sections[0]=sections[0]-12+""
		for (var i=0; i<sections.length; i++){
			if (sections[i].length==1)
				sections[i]='<img src="'+imageclock.digits[0]+'" />'+'<img src="'+imageclock.digits[parseInt(sections[i])]+'" />'
			else
				sections[i]='<img src="'+imageclock.digits[parseInt(sections[i].charAt(0))]+'" />'+'<img src="'+imageclock.digits[parseInt(sections[i].charAt(1))]+'" />'
		}
		return sections[0]+'<img src="'+imageclock.digits[12]+'" />'+sections[1]+'<img src="'+imageclock.digits[12]+'" />'+sections[2]
	}

	imageclock.display=function(){
		var clockinstance=this
		this.spanid="clockspan"+(imageclock.instances++)
		document.write('<span id="'+this.spanid+'"></span>')
		this.update()
		setInterval(function(){clockinstance.update()}, 1000)
	}

	imageclock.display.prototype.update=function(){
		var dateobj=new Date()
		var currenttime=dateobj.getHours()+":"+dateobj.getMinutes()+":"+dateobj.getSeconds() //create time string
		var currenttimeHTML=imageclock.imageHTML(currenttime)+'<img src="'+((dateobj.getHours()>=12)? imageclock.digits[11] : imageclock.digits[10])+'" />'
		document.getElementById(this.spanid).innerHTML=currenttimeHTML

	}


</script>




<DIV STYLE="position:absolute; top:260px; left:215px; width:109px; height:28px">
<FONT SIZE="+2" COLOR="black">
<TABLE BORDER="0" cellpadding="10" CELLSPACING="0" TOP MARGIN="0">
<TR>

<TD WIDTH="109" HEIGHT="28" BACKGROUND="/users/1712/49/18/66/album/clock210.png" VALIGN="top">

<script type="text/javascript">

new imageclock.display()

</script>

</TD>
</TR>
</TABLE>
</DIV>

Much appreciated!

Hi brothers and sisters,

My first post here. I am trying to do a self-test system for my small company, everything is going smoothly so far however, I am facing some problem with setting a cut off time for doing the test. For example, my staff could not go in to the system after 8pm. Anyone had any idea on how to do it?? I have only some basic knowledge of php which I learn in school thus setting time limit might be too advance for me thus need you guys help.

Thank alot

Hi,

I have very little JS knowledge, on a scale of 1 - 10 I would give me a 1, so apologies if I have this completely backwards.

AIM:

I have a form that takes in times a person was doing an activity, and you can enter multiple times & activities in one go.

e.g.

Person A | Lunch | 12:00 - 13:00
| Meeting | 13:30 - 14:00


I need the JS to validate that Activity B (Meeting in the above example) does not overlap with Activity A (Lunch in the above example). It also needs to check this for all activity's so that none overlap with each other else output error.

I have managed to do this server side in PHP and will include the code as it may help show what I am trying to do better than Im explaining.


PHP Code

Code:

	$Code = $_POST['code'];
	$NumberofCodes = count($Code);
	$Start = array();
	$_POST['starthr'] = array_values($_POST['starthr']);
	$_POST['startmin'] = array_values($_POST['startmin']);
	$i = 0;
	foreach($_POST['starthr'] as $key1 => $value1) {
	$Start[(int)$i] = $_POST['starthr'][$key1] .":". $_POST['startmin'][$key1];
	$i++;
	}
	$Stop = array();
	$_POST['stophr'] = array_values($_POST['stophr']);
	$_POST['stopmin'] = array_values($_POST['stopmin']);
	$i = 0;
	foreach($_POST['stophr'] as $key1 => $value1) {
	$Stop[(int)$i] = $_POST['stophr'][$key1] .":". $_POST['stopmin'][$key1];
	$i++;
	}
		
	$i = 0;
	$j = 1;
	
	while ($i < $NumberofCodes){
		while(($j-1) < $NumberofCodes){
		
	if (($Start[$j] > $Start[$i] && $Start[$j] < $Stop[$i]) || ($Stop[$j] > $Start[$i] && $Stop[$j] <= $Stop[$i])) 
	{
		//Stop form executing and provide error information.
	}
	$j++;
	}
	$i++;
	}

JS Code (What I could manage)

Code:

	var i = 0;
	var j = 1;
	var Start = new Array();
	var Stop = new Array();
	var aa = new Array();
	var bb = new Array();
	
	while (i < counter){
		while((j-1) < counter){
	Start[i] = document.myform.elements('starthr['+i+']').value + ":" + document.myform.elements('startmin['+i+']').value;
	Stop[i] = document.myform.elements('stophr['+i+']').value + ":" + document.myform.elements('stopmin['+i+']').value;
	var a = toDate(Start[i],"h:m")
	var b = toDate(Stop[i],"h:m")
	
	aa[i] = a;
	bb[i] = b;
	
	
	function toDate(dStr,format) {
			var now = new Date();
	 		now.setHours(dStr.substr(0,dStr.indexOf(":")));
			now.setMinutes(dStr.substr(dStr.indexOf(":")+1));
			now.setSeconds(0);
		return now;
	
}	
	if ((aa[j] > aa[i] && aa[j] < bb[i]) || (bb[j] > aa[i] && bb[j] <= bb[i])) 
	{
		//Fail validation
	}
	else
	{
	        //Pass Validation
	}
	j++;
	}
	i++;
	}

Any help on this would great.




Thanks
Barry

Hi,

There are two text boxes in a HTML form. The first text box takes the time when the user starts to work on a project. The second box takes the time when the user stops working on that project.

Now, I would like to calculate the total time worked on that project for that user. That is (stop time - start time). I tried few things without success.

Any help will be appreciated.

Hello everyone...

I have Javascript code here which gives the time (hours, minutes, seconds) and date (year, month, day), and it updates every second. What I want to do is redirect to a certain page every 10 minutes, on the 10th, 20th, 30th, 40th, 50th and 60th minutes.

The time displays and updates every second, but no redirect happens. Please fix my code! Thanks in advance.


Code:

<tr><td align="center">
<SPAN ID="clock"><?php echo date('d/m/Y <\b\r> H:i:s', time()); ?></SPAN>
</td></tr>

<SCRIPT type="text/javascript">

	var year2 = <?php echo date('Y', time()); ?>;
	var month2 = <?php echo date('m', time()); ?>;
	var day2 = <?php echo date('d', time()); ?>;
	var hour2 = <?php echo date('H', time()); ?>;
	var minute2 = <?php echo date('i', time()); ?>;
	var second2 = <?php echo date('s', time()); ?>;
	var daysInMonth = <?php echo date('t', time()); ?>;

	function updateClock()
	{
		second2+=1;
		if(second2>=60){second2=0;minute2+=1;}
		if(minute2>=60){minute2=0;hour2+=1;}
		if(hour2>=24){hour2=0;day2+=1;}
		if(day2>daysInMonth){day2=0;month2+=1;}
		if(month2>12){month2=0;year2+=1;}
		byt(nollor(day2)+"/"+nollor(month2)+"/"+year2+"<br />"+nollor(hour2)+":"+nollor(minute2)+":"+nollor(second2),"clock");

		updateUtlogg();
		redirect(minute2,second2);

	}

	var utloggUtloggad = false;

	function updateUtlogg()
	{
		if(utloggUtloggad)
		{
			return true;
		}

		return(true);
	}

	function nollor(nummer)
	{
		if(nummer<10)
		{
			tmp="0"+nummer;
		}
		else
		{
			tmp=nummer;
		}
		return tmp;
	}

	function byt(txt,lager)
	{
		if(document.getElementById(lager))
		{
			document.getElementById(lager).innerHTML=txt;
		}
	}


	function redirect(x,y)  {
	if(nollor(x)==0 && nollor(y)==0 || nollor(x)==10 && nollor(y)==0 || nollor(x)==20 && nollor(y)==0 || nollor(x)==30 && nollor(y)==0 || nollor(x)==40 && nollor(y)==0 || nollor(x)==50 && nollor(y)==0)
			{
	setTimeout("location.href = updateInterval.php;",0);
			}
				}


	var oInterval = window.setInterval("updateClock()",1000);

</SCRIPT>

I got this script and I'm trying to get the EST hour but I have a big concern that it doesn't work, can somebody help me and tell me if it works by him (it should display "15" even if he doesn't have est time) and if not plaese tell me why. Thank you. Try it he http://jsfiddle.net/fqz37/

Code:

// function to calculate local time
// in a different city
// given the city's UTC offset
function calcTime(city, offset) {

    // create Date object for current location
    d = new Date();

    // convert to msec
    // add local time zone offset 
    // get UTC time in msec
    utc = d.getHours() + (d.getTimezoneOffset() * 60000);

    // create new Date object for different city
    // using supplied offset
    nd = d.getHours(utc + (3600000*offset));

    // return time as a string
    return nd.toLocaleString();

}

// get NY time
ny=(calcTime('', '-5'));

document.write (ny);

How to know the execution time of a function?

For example, which of these functions run in less time? That is, which of these functions are more weightless to run?

Code:

document.getElementById("my_image").src = "images/picture.png";

//or

document.getElementById("my_image").style.webkitTransform = "rotate(45deg)";

Thanks in advance!

I have created a kdate.js file in Kannada to display current, day,month,date,year and time.While the day,month are displayed in kannada the date,year time are shown in english.I want them to display in Kannada.Will some one guide me how I can do this and what are changes that to make in the javascript code.I have used unicode while writing Kannada script.
I also want to know how to increase and change font color and the time element to be displayed on the next line.
Please help and guide me.
thanks
js file in the form the text is sent as an attachment.

I wanted to make script that will work fine with pictures. For example if its 21:21 there are pictures of those numbers instead of normal mechanic numbers.
I tested this code:
Code:

<script type="text/javascript">
function Time() {
var Date1=new Date()
var Hours1=Datum.getHours()
var Minutes1=Datum.getMinutes()
if (Hours1==21 & Minutes1==12)
document.write("<img src='http://img839.imageshack.us/img839/2383/47819853.png'" + "<img src='http://img714.imageshack.us/img714/9003/asdadajy.png'" + "<img src='http://img210.imageshack.us/img210/2020/34813695.png'")
}
</script>

And have this:
Code:

<button type="button" onClick="vreme()">Click</button>

That work fine for time 21:12 but if i want to work for all pictures i will ahve to write different code like:
if ...
elseif...
elseif...
And plenty of those codes which is totaly wrong. What should I do?

Hello,

I am currently working on a site where I need to display the date. The portion I'm working on looks something like this:

Yesterday Entries for Today's Date Tomorrow

If the user clicks the yesterday link, then that date needs to show. The same goes for the tomorrow link. Otherwise, the current date will show. I have most of the function setup. The problem is I don't know how to check whether or not a link has been clicked. I also need to know how to setup the function within the link. Here's what I have:

<a href="#" onclick="javascript: previous(yd);return false">Yesterday</a>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

The onclick event is supposed to refer back to the function I created to determine what date to display based on which link the user clicks. So my questions a

1) Is my link setup properly to allow the function to run?
2) How can I check to see whether or not a link has been clicked in my function?

Any help/suggestions are greatly appreciated!!

Thanks in Advance

I solved the issue by completely removing the LINK, and simply adding the onclick function. thank you anyway.



--------------------------------






I'm sorry if perhaps my first post was to confusing, I hope I can better describe what I'm trying to achieve here.

Here's what's going on.

When a link is 'clicked' such as Code:

<a href="javascript:animatedcollapse.toggle('test')"> I expand and Collapse!</a>

it will 'expand' and 'collapse' a DIV. The script works completely fine, unless I try to place a Code:

<input type="button" value="myButtonValue" />

as the link, so I can submit the information through a php request.

if I use an image, or text, it works fine, but I need to be able to use a button.

You can see an example of a working and non-working 'collapsing and expanding DIV' if you Click Here.

Is there another way around this? I'd even venture to use another form of 'expanding' and 'collapsing' JavaScript if anyone could provide...

Thank you.