Adjusting For Timezone
Aug 30, 2005
I'm (still) working on an ISO 8601 date parser. I want to convert at least
the formats described here:
http://www.w3.org/TR/NOTE-datetime
Well.. I've got most of it working (via RegEx's) good enough for me but I'm
having a brain block when it comes to TimeZone.
The datetime may come with an optional timezone offset (from GMT) as here
(the offset is +1 hour from GMT):
1997-07-16T19:20:30+01:00
So... that's the current time there... but my spec is that timezone
information, if present, should be used to convert the given time to local
time. For me, for example, this would be -5:00 from GMT.
I've already split the Timezone information: I've got indiviual access to
the sign (plus or minus), the hour offset and the minute offset.
So I'm sure there's a nice, simple formula for this... but it eludes me. Or
I'm lazy... I can't decide which.
Any pointers?
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Sep 29, 2011
My php script has an input date (example: 2011-09-30) but if I use the server date then it may not match to client's machine.
But how do I get the client's local timezone then pass it to php and convert ?
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Jul 11, 2009
I am building a website for users that exist around the world and need to show the user's "local machine" time and timezone, not the time of the website host server. Is there a javascript function or process to determine this?
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Jul 20, 2005
I have date(ex., Thu, 04 Dec 2003 10:35:19 +0500) and I know the
timezone(ex., America/Anchorage). Now I need to convert the date into
the given timezone. Is it possible to achieve this thru js api's?
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Oct 15, 2009
Take a variable...
var time = "12:00"
split it...
var hour=time.split(":");
...then add or subtract from the numeric value of hour[0] based on timezone.
EST = -5
PST = -8
What would be the best way of doing this?
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Oct 27, 2009
I am working on date time picker modification. I am copying the time from one source pasting in text box and then once I click on another box. It populates the time on the basis of time zone difference. Now whenever I am doing vice versa. It is going in loop.
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Jul 13, 2010
I was wondering if I could set the script below to apply to eastern standard time and not the users computer time. So it wont confuse users over seas, Im using it to display scheduled announcements as the header.
<script type="text/javascript">
var d = new Date();
theDay=d.getDay();
[code]....
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Jul 23, 2005
ok im getting tired of looking for an answer and coming up short with
scripts that dont work. i have a application that uses GMT for all its
times and needs the clients timeoffset for showing the correct times
for everything. i use date.getTimezoneOffset() which works fine and
shows the daylight savings time correct value of -4 since im in eastern
standard time and its daylight savings time right now. well eastern
standard time is normally -5 and my dropdown populates with the -4
showing atlanta time. which will confuse the user and then they will
pick -5 eastern time which will make everything an hour off. i have a
disclaimer now, but i just want to know what the easiest way to display
the users time zone name useing the getTimezoneOffset() value. i
really want to be able to detect if the user has the adjust for
daylight savings checked for their machine.
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May 21, 2010
I have my code php like that:
<?php
//Get the data from system and return in EU format
function ShowDate() {
$Date = date("d"."/"."m"."/"."Y");
return $Date;
}
//Get the time from system
function ShowTime() {
$Time = date("H".":"."i");
return $Time;
}
?>
Now I have two input box
<html>
<head>
</head>
<body>
Type the date:<input name="txtdate" type="text" class="input" id="txtdate" title="e.g dd/mm/yyyy" value="<?php echo ShowDate(); ?>" size="9" maxlength="10">
<br>
Type the time:<input name="txttime" type="text" id="txttime" value="<?php echo ShowTime(); ?>" size="5" maxlength="5">
<br>
London: Friday May 21 2010 05:12:00 <br>
New York: Friday May 21 2010 00:12:00<br>
Hong Kong: Friday May 21 2010 12:12:00<br>
Tokyo: Friday May 21 2010 13:12:00<br>
</body>
</html>
So.... the important is the user can interactive with the date. If I change the date or time all this values will be change as well. Someone knows how can I do this? The field txtdate I will get from a calendar plugin (javascript) that I already put in my code.
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Jul 13, 2011
First off let me say I did do a search of google and these forums before posting this. I have sort of what I want without having exactly what I want and before I proceed further hacking up already working code I figured I'd start a conversation as to whether my goal is at all possible.Currently using (thank you w3schools as I am by no means a javascript expert):document.writeln(new Date()) I get the following: Wed Jul 13 2011 09:24:09 GMT-0600 (Mountain Daylight Time)which would be great for most people, but I'm kind of picky so I want the clock to keep ticking and to show the current time.To do this I use this code(again thank you w3schools):
function startTime()
{
var today=new Date();
[code]....
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May 5, 2009
Our application servers are hosted in US Central. So when cookie created by the application it contains US Central Time with DST.
When we use it in India time comparison logic fails as milliseconds are different. In US central logic of comparison current datetime milliseconds with cookie date time milliseconds work gr8. Any way so that It work in India too.
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Jan 9, 2012
I have a countdown clock in bidding. When someone bid within 30 secs clock will reset from 30 sec. In my case clock is reset but timezone difference added. So if bid within 30 sec clock counting down 4 hrs , 30 mins , 30 secs.
My code is below----
"cd".$clock_no is the countdown div
var periods = $("#cd". $clock_no."").countdown('getTimes');
if ($.countdown.periodsToSeconds(periods) < 30) {
periods[6]+=30;
$("#cd1").countdown('change', {until: periods[0] + 'y ' + periods[1] + 'o ' + periods[2] + 'w ' + periods[3] + 'd ' + periods[4] + 'h ' + periods[5] + 'm ' + periods[6] + 's'});
}
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Nov 8, 2009
I should start out by saying that my javascript skills suck beyond description. Even after Googling for help, I'm still struggling.
I'd like to adjust a numeric form input field by buttons, i.e. clicking the +1 button increase the numeric value in the field by one, clicking -1 does the reverse. I'll probably use <a> or <button> elements for the +1/-1.
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Apr 16, 2010
I have a large Select box for all the accounting items in the program. It's long so it makes it hard for the user to find the one they want. There are 6 categories that the accounts are in. They are:
ASSETS
LIABILITIES
REVENUE
[code]....
In an attempt to simplify the selected process I put in a false option so the user can find their way easier. Example:
---- LIABILITIES ---
Bank loan
Fry's account
For each account the value is the ID from the table and the Name is the associated name in the table.This of course adds a count to the selectIndex for the box.I made a variable for each of those categories.
ASSETS = 1
LIABILITIES = 2
etc.
The problem is that I have to adjust the select index for that variable. Example, if a liability is selected, I would have to subtract 2 from the index.
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Jul 20, 2005
I'm a newbie...I'm having trouble changing the size of an image when I
use different window sizes when loading the and resizing the browser window.
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Oct 17, 2010
I have a search function which works when I only want to have only one search per page, but as it involves a string call I'm not sure how to modify it to multiple search requests on a page.
The below works fine for one call:
<script type="text/javascript">
function showHint(str){
if (str.length==0){
[code]...
The above doesn't work and I am not sure what do about the showHint(str) as clearly I am not representing it properly in my attempt to modify the script.
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May 18, 2011
I have a javascript sound board that I've made for a Church skit but I'm wanting to be able to smoothly fade out the longer SFX without having to do it manually with the volume slider.
The Object: <span id="player_holder"><embed id="player" hidden="true" autostart="true" loop="false" volume="100"/></span>
How do I modify the volume value from: document.getElementById('player')
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Nov 19, 2007
this script play on the disable option of form elements...
but in order to set it up i need to write all the "name" of all form elements inside the
<input type="checkbox" name="control1" onclick="enableDisable(this,'day','month','year','hour','min')" />
'day','month','year','hour','min' - those are just examples...i got much more of elemets...
how can i make this script recognize all the elements inside <form name="example1"> by itself...with no need from my side to specify all elements like this (this,'day','month','year','hour','min')" Code:
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Jan 13, 2009
The problem: When the website loads, the background shifts up to incorporate the catfish popup and allow the content to not be masked. This is a cool function, though I don't want this to happen.
Question: How do I stop the website from adjusting up?
(I tried modifying this: catfishheight = 90; // total height of catfish in pixels catfishoverlap = 90; // height of the overlap portion only (semi-transparent)
This does allow the catfish to cover up the content, though the background image still shifts with the catfish load.
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Apr 15, 2010
I have a javascript calendar which will be used for a booking form. The booking form is for the months of october, november and december.
The code is:
//Global variables
var winCal;
var dtToday;
var Cal;
var MonthName;
var WeekDayName1;
var WeekDayName2;
var exDateTime;//Existing Date and Time
var selDate;//selected date. version 1.7
var calSpanID = "calBorder"; // span ID
var domStyle=null; // span DOM object with style
var cnLeft="0";//left coordinate of calendar span
var cnTop="0";//top coordinate of calendar span
var xpos=0; // mouse x position
var ypos=0; // mouse y position
var calHeight=0; // calendar height
var CalWidth=208;// calendar width
var CellWidth=30;// width of day cell.
var TimeMode=24;// TimeMode value. 12 or 24
var StartYear =2010; //First Year in drop down year selection
var EndYear = 5; //End Year offset. i.e. Current Year + 5 .....
//use the Month and Weekday in your preferred language.
var MonthName=["October", "November", "December"];
var WeekDayName1=["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];
var WeekDayName2=["Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"];
The only problem is when I look at the tcalendar in frontpage preview it shows 9 other months as 'undefined'.
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Jul 20, 2005
Im working on a site for a friend, and we've setup a popup window for a couple pages, but with the code we have, the variables for the width and height are in the <script> portion of the code, and not on each individual popup code segment. Is there a way I can add "width=400" or something to each popup to change its width? Code:
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Sep 14, 2010
I can't change the speed on any jQuery functions that use that parameter, for example fadeIn(). No matter if I add slow, fast, 100, 180000... my tags/images/whatever always fade in at the same speed which is something between half and one second. Is this a bug?
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Jan 31, 2011
I'm using a preview slider on my Wordpress site, but it doesn't work the way I want it to. As soon as the preview is changing it shows the next preview on the rightand the previous on the leftside of the center preview.
[Code]...
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May 31, 2010
So, I'm new to jQuery, but have a pretty good understanding. Still, I've come across an issue that I'm not quite sure how to resolve. I'm using wordpress, and have a .swf inside of a div, "player." The player class has no height spec, as the height of the .swf is different depending on the page. What I need to do is detect the height of the .swf on each page, and then apply that number as padding-top to another class?
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Jul 23, 2009
The issue I am having is that my menu is aligning to the right, instead of to the left where the normal menu was. I have worked with the CSS for some time now, but have not been able to figure it out. I would also like to make the menu colors black text with a transparent background, and white text with a #333 background on hover. The web site address is: [URL]
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Aug 16, 2010
<html>
<head>
<title>< /title>
</head>
<body>
<iframe name="j" id="j" src="ANOUNCEMENT.html" onload="this.style.height = j.document.body.scrollHeight + 12"></iframe>
</body>
</html>
Am I doing it right? I am trying it now but the j.document.body.scrollHeight seems doesn't work for me.
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