How To Reliably Get New York Time Using Javascript
Jul 23, 2005
I'm coding up a small little script that's supposed to be used to
display the number of hours until the US Financial markets open/close.
Naturally, this involves getting the current time on the eastern
seaboard, which, upon reflection, seems a little more difficult than I'd
thought.
This is largely because of daylight savings time. It's easy to grab
UTC/GMT time using javascript and subtract 4/5 hours. The thing that
doesn't seem trivial is how to determine which -- how to determine if
(a) the script viewer is in a location which has daylight
savings/standard times and (b) if so, whether or not daylight savings is
in effect.
I can grab the local time as a string, and regexp against it for
"Daylight" -- however, since not all regions use this, it's clearly not
a reliable method.
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Jun 14, 2006
Is there a way to know when a function is available for me to call it
from a dynamically loaded a javascript?
I use this code to load the include.js file and then I call
testIncludeFn() from it:
<code>
var html_doc = document.getElementsByTagName('head').item(0);
var file = document.createElement('script');
file.setAttribute('language','javascript');
file.setAttribute('type','text/javascript');
file.setAttribute('src','/include.js');
html_doc.appendChild(file);
// here I would like to be able to wait for the script to become
available
testIncludeFn();
</code>
It works in IE and sometimes I get it to work in FF 1.5, but I would
like to have a way of reliably calling testIncludeFn().
Can I pool somehow the DOM to see if the load completed. How?
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Aug 30, 2011
I have found the solution to select ANY whole English sentence reliably regardless of quotation marks, or even punctuation marks used inside them for abreviations, decimals or whatever other purposes! Tests reliably on any non-accented string!
["']?[A-Z][^.?!]+((?![.?!]['"]?s["']?[A-Z][^.?!]).)+[.?!'"]+
EXPLANATION:
In human language it reads as follows:
Find a non-accented capital letter that might be preceeded by a quotation mark and check that it is not directly followed by any punctuation marks to exclude capital letter abbreviations inside sentences. Then crawl forward by repeating a group consisting of a negative look-ahead and the universal selector character until you arrive at the end of the sentence you are in. You will know you are there if you find the sequence of a possible quotation mark - the one closing its pair at the start of your sentence, followed by the sentence- closing punctuation mark and the white space that neccessarily separates your sentence from the next one. Then you repeat the criteria for the start of a sence to see it's already a new one! Because of the negative condition in the look-ahead the repeated group - the universal selector really - did not choose the closing punctuation mark + the possible quotation mark, so you should care for these separately.
SUGGESTION FOR FURTHER DEVELOPMENT: Together with the starting non-accented capital letters you can also use hexadecimal notations to describe accented ANSI capital letters to select sentences in any other European languages. But this is not an issue for me at the present..
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Dec 8, 2004
My menu is a big javascript file. It takes time to reload the menu file when the page is refresh. Is it possible to load the file only one time since the menu is same in every page?
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Jul 20, 2005
Well I am facing this strange issue with javascript. Specifically on
the 26th October 2003, when I select any roomtype I get the rate 0 if
"In the Operating system, Time Zone is selected with "Automatically
adjust clocks with daylight saving changes". why does this happen,
please have a look at this page: Code:
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May 15, 2007
I am using jsCalendar and I would like to know how I can get Client Time Zone related to the TIME that have been selected.
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Jul 23, 2005
I have recently set up a server certificate on a web site.
Under certain conditions I need to change the color of a html span
element.
I do this using the following javascript function called from the
onreset attribute of the form element.
function removeWarningMsg()
{
if (isIE) {
document.all.Warning.style.color = "<%=BACKGROUND_COLOUR%>";
}
return true;
}
This was working perfectly fine until I applied the server certificate
to the website. Now when executing this line of code the following error occurs:
Error: 'document.all.warning.style' is null or not an object.
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Jul 23, 2005
Can javascript do something at submit() time to distract the user?... like clear the form... or clear the screen ??
I have seen some fancy ways to prevent multiple clicks..... but a number of my cgi's eat up several seconds before they can respond and I would like to keep my user out of trouble.
Whatever it is. it has to be non-modal and not involve nph headers (my webserver does not support them).
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Dec 22, 2010
I have put together a script which does this:
1. Make ajax request (via getHTTPObject(), no libraries is used)
2. Create an iframe with script, src is "blank.html".
3. use iframe.document.write() to execute scripts (inkluding document.write based scripts) in the iframe.
4. call parent window's document to clone the iframe content.
5. Append the content clone to parent body.
Works like a charm in all browsers but IE, where every version - including IE9 beta - hangs on iframeWindow.document.close() with empty cache, leaving the window/tab unresponsible. When I force quit, restart and load the page again (now in cache) it works.What I've tried already:
* Googled.
* called the ajax request callback manually with string instead of request.responseText - it works even with empty cache here.Removed document.close() - resulting in scripts in iframe not executing at all (again, only with empty cache, cached pages works fine).
* Tested to make the ajax request synchronous - no difference.
Console.log trace:
Code:
append() begin
unlimited-scroll.js:160 install() begin
unlimited-scroll.js:194 iframe begin[code].....
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Sep 17, 2011
I do pretty much all the computer related tasks, which includes computer system repair, audio/video editing, cd/dvd printing and duplication, document format and creation, etc etc. But when it comes to HTML (or other codes) I know very little. But we needed a website, so I use Homestead hosting and the Homestead (offline) Site Builder program.
Anyway, inside the sight builder program, they have the option to insert HTML Snippets. Which I use for various objects, off site tools, and other. But now I need to do something for which I have not been able to find a "premade" html code object, that can perform the task desired. I have searched and searched google and went through many sites, including this one. I have tried to take some codes which I thought I could alter to make it perform, but they just wouldn't work for what I needed them to do.
I need a code that will automate a "specific text message" to change daily, and to schedule a "different specific text message" to appear each day. I need to be able to schedule each days "texts" at the very least 31 days in advance. In other words, I need to make an array (I think that's what it is called) for the entire month:
Day 1 "today's text 1"
Day 2 "today's text 2"
Day 3 "today's text 3"
[code]....
If were possible to make an "array" that would go six months out (or more) that would be very helpful! But the longest that I have seen is one month at a time, so that may be as long as they go, but I'm not sure.On top of all of this, I need these changes to be performed at a specific time of the day. I would like them to be preformed at sunset everyday, but I don't think there is anyway to direct the code to look at like [URL] sunset times or such. So if I can at least choose a specific hour, like 8:00 pm, that will work, I will just have to adjust this every once in a while.
However, I don't want it to change just at 8:00pm in my timezone. I need it to change at 8:00pm according to the website viewers timezone. Is there a way to make the code "look" at the users computer and "get their time" and use that to adjust what text is displayed? In other words, I live in Indiana USA. If someone in Australia looked up the webpage on the 15th day of the month, but it was 9:00pm Their Time. The text I need to be displayed should be for "Day 16" from the array.
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Jun 3, 2009
I'd like some direction on creating a small piece of Javascript that will populate my <select> boxes.Basically, I have a form for users to create events, with a start time and an end time. (These are the two select boxes).For example:
Code:
<select id="startTime">
<option value="12:00AM">12:00AM</option>
<option value="12:15AM">12:15AM</option>
etc.....
</select>
What I am trying to do is:
1) Have times populated in 15 minute incrementals from 12:00AM to 11:45PM
2) Have some type of "error checking" available to where the End Time must be after the start time. It would be nice for the script to automatically change the end time field to a time that is after the start time.
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Apr 21, 2011
I'm writing an application with PHP that let me have statitics about visited pages for my web site. to save informations needed i use an ajax query with the unload event. The problem that i have is titme to time the script uses with that ajax query doesn't work especially when i stay long time in a page.
This is my code?
Why it works most of time but sometime doesn t work? is there any specifications to take for the unload event ?
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Mar 2, 2011
I am trying to check the user enter time with current system. If user enter the time less than the current system time then I want to display the alert box. But the code is not working. Here is the code
<html>
<head>
<title>test</title>
<script type="text/javascript">
var d = new Date();
var curr_hour = d.getHours();
var curr_min = d.getMinutes();
[Code].....
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May 30, 2011
I do have the countdown script (see link below) to display the time between current time and the date given in real-time. However, I want to achieve to display the time difference between a given start and end time. Right now, it calculates from the current server time to the end time. I want to be able to set up my own start time and end time.
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Jun 7, 2009
I have scoured the net and found nearly what I'm looking for, but not exactly, and I don't really know javascript, so trying to piece together bits of code hasn't worked. What I need is the script for a live clock with date and time format exactly as follows: Sunday, 07 June 2009, 24:00:00 (GMT+1).I have two separate files with the following code, which gets me close to what I need: Sun Jun 07 19:05:48 2009 Obviously the time is in the wrong place and it doesn't show GMT+1. These are the scripts:
Code:
function update() {
time = Date();[code]....
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Mar 4, 2009
I need to convert a string containing the time to a real time value so I can insert it in to a time column in my database. tempElapsed = "1:22:33:44:555"
var _tempElapsedHours = tempElapsed.substring(2,4);
var _tempElapsedMinutes = tempElapsed.substring(5,7);
var _tempElapsedSeconds = tempElapsed.substring(8,10);
var _elapsed = Date.parse(new Date(_tempElapsedHours,_tempElapsedMinutes,_tempElapsedSeconds));
The result of elapsed is -1.4243e+012, I was hoping for a time value of 22:33:44
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Mar 8, 2011
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.
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Apr 15, 2010
There are probably a million threads about time conversion, but I cannot find the answer to my problem. So I'm making it a million and one...
I have my date/time stamps stored in UTC (ie number of second since the Unix Epoch). How do I convert this to a definable local time in JavaScript? With definable I mean any local time, not necessarily the machine local time.
In PHP I would do it as follows:
Code:
$utc = time(); // current UTC
$timezone = "America/New_York";
date_default_timezone_set($timezone);
echo date("Y-m-d H:i:s", $utc);
The above would give the current date/time in New York. I would like to be able to do this in JavaScript for any time given in UTC.
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May 8, 2011
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
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Feb 5, 2010
i am now playing with the time. how to make the time move in downwards, i mean a countdown like format, e.g the time will start countdown and end in 2 days? here's my initial noob code for creating time
[Code]....
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Jul 21, 2011
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]...
I have tried using different browser chrome,IE9,Maxtor, and Opera my OS is Win7
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Feb 4, 2011
I'm using a javascript-based countdown timer that currently uses the client's system time to calculate the countdown. I assume that this line of code is where this is performed:
Code:
I'm trying to make the script use server time instead as some people may have wrong dates/times set or live in different time zones etc.
So what I did was use a bit of php:
PHP Code:
This gives a result but now the countdown is 30 days off. I am testing on my local xampp server (which also uses system time) so there should be no discrepancy. I also tried adding
Code:
But no difference.
I can post the whole script if required but it is reasonably long.
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Aug 2, 2004
I have a file system where users upload files. Using PHP the file is time stamped and that time stamp is saved in a database. This has been going on for months so I have a lot of files with server times saved in the database. Recently the client asked if the date/time could be displayed according to the client's timezone instead of the server's. So, I need a javascript function that will take a PHP formated date string and convert it to the clients time-zone.
So let's say there is a file with a date/time of 07/15/2004 1:15 PM in central time zone and the client is viewing the file today in pacific time zone (2 hrs diff.). I need to show that date/time as 07/15/2004 11:15 AM. I need JS to take གྷ/15/2004 1:15 PM' and somehow convert it to གྷ/15/2004 11:15 AM'. Code:
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Oct 25, 2009
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:
<script type="text/javascript">
/***********************************************
* JavaScript Image Clock- by JavaScript Kit (www.javascriptkit.com)
* This notice must stay intact for usage
[Code].....
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Dec 9, 2011
I have a date in my javascript like this: Mon Dec 12 00:00:00 UTC+0430 2011 I need to convert it to a date without the offset (the +0430). I actually changed my computer's timezone to generate this offset - we have uses placing orders on our site who don't use UTC and it's throwing our orders out as they need to select a delivery date but it's passing the date with the offset. How do I convert a date to UTC time?
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Jul 23, 2005
I'm working on some code and am running into brick walls. I'm trying
to write out Javascript with Javascript and I've read the clj Meta FAQ
and didn't see the answer, read many similar posts (with no luck
though), and searched through the IRT.ORG Faqs
(www.irt.org/script/script.htm).
The Javascript is designed to open an popup window and then inside that
window call another script which will resize that window. There may be
another way around this but the reason I tried this approach initially
was that I wanted to call the onload handler in the popup window to
resize the image only after the image had completely loaded. I've had
some code in the primary Javascript file (showimage.js) before that
works if the image has been cached but on the first load, it doesn't
resize properly which tells me it is probably because it is trying to
resize the window based on the image size but it isn't completely known
at that point. So I removed that code and tried placing the resizing
code in the second Javascript file (resizewindow.js). BTW I've tried
other code to open a popup image and automatically size it ie Q1443 at
irt.org but that doesn't do exactly what we need.
Even if there is another way to do this with one file, I still want to
figure out why this isn't working in case I run into it in the future.
I thought what I would need to do to use document.writeln to write
Javascript would be to escape any special characters and to break
apart the script tag ie
document.writeln('</SCRIPT>');
would become
document.writeln('</SCR' + 'IPT>');
I have a HTML page and 2 Javascript files. All files are in the same
directory and have permissions set correctly.
Here are the 3 files (keep in mind wordwrap has jacked up the
formatting):
index.html
----------
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Test</title>
<SCRIPT type="text/javascript" LANGUAGE="JavaScript1.1"
SRC="showimage.js">
</SCRIPT>
</head>
<body>
Click the house<BR>
<A ONCLICK="newWindow1('house1.jpg','Nice House')"><IMG
SRC="house1thumb.jpg"></A>
</body>
</html>
showimage.js
------------
function newWindow1(pic,sitename)
{
picWindow=window.open('','','width=25,height=25,sc rollbars=1,resizable=1');
picWindow.document.writeln('<html> <head>');
picWindow.document.writeln('<SCR' + 'IPT type="text/javascript"
LANGUAGE="JavaScript1.1" SRC="resizewindow.js"></SCR' + 'IPT>');
picWindow.document.writeln('</head>');
picWindow.document.writeln('<body onload="resizewindow();">');
picWindow.document.writeln('<img src=' + pic + '>');
picWindow.document.writeln('</body> </html>');
picWindow.document.close();
}
resizewindow.js
---------------
function resizewindow()
{
// Do resizing here.
// Right now this isn't being executed
alert("resizing window");
}
Can anyone provide some pointers as to why this javascript is failing?
I'm using IE6 on Win2k and when I click on the image to open the popup
window, it does open the window but it is white with no content and the
system immediately goes from about 4% CPU usage to 100% and
consistently stays there until I kill that window with the task
manager.
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