Is there any way at all to create a new template object that inherits from the built in Date object so as to be able to add new methods to that child object without adding them to the built in Date object? I've tried everything I can think of and as far as I can tell it keeps referencing the Date function instead of the Date object and so doesn't work.
View 3 RepliesCan assign a new function to a built-in object in Firefox:
But IE and Opera don't have a MouseEvent or HTMLElement that can be set up in the same way. Can you do this in IE or Opera, or just Firefox, and maybe Webkit?
I'd like to make a Degree object that inherits from the Number object and uses the Number constructor but adds a .rad() method that returns the value in radians.
If I do something like:
It generally works but I don't get Number's methods like toString and toPrecision.
I was wondering how you would create a javascript Date object from an ISO8601 string? We have done this successfully in FF4, but not IE.
If we try the following in FF4 it works:
alert(new Date("20091107T12:15:00))
In IE it returns:
'NaN'
What would be the Date standard used in JavaScript and AJAX from the server to the client? We were thinking about using UTC
every time I try and alert:
[ { number:0, secondnumber:0 }, { number:2, secondnumber:1 }, { number:1, secondnumber:2 } ]
it just shows [object object], [object object], [object object]. Why is this and what can I do to make the record be shown as it is above in an alert?
I am trying to get to the bottom of javascript object, prototypes etc. I have a fairly good grasp of it, but I get confused the closer I get to the base object.prototype. FIrst of all, I was under the impression that all objects descend directly from Object. But some objects (like Array) seem to inherit properties and methods from the function.prototype. So does this mean that the chain is like this:
object -- function -- array Second, I noticed (on the mozilla javascript reference site that object.prototype inherits properties and methods from function.prototype and vice versa!? How can this be? I must be missing something important about understanding the chain?
I am using the templates below to add a row into a table using the 'ADD' button.
<script id="queryGeneratorRowTemplate" type="text/x-jquery-tmpl">
<tr>
<td>
<select> <%--name="ddContentSource" id="ddContentSource">--%>
[Code]....
but this returns '0.nodeType' is null or not an object on jquery.tmpl.js I am missing something or this is not supported in templates?
How do check for a date object?
<script type="text/javascript">
var d=new Date()
var arr=new Array("Jun 5",d,"Mar 16")
for(i=0;i<arr.length;i++){
if(arr[i] != Date()) // is string or is not date object
document.write(arr[i] + "<br>")
}
</script>
According to the Safari browser the world began on "Fri Dec 13 1901 15:45:52 GMT-0500", but I need to be able to get around this limitation.
I am interested in dates from 1500 to 1901, as far as I can determine, there are 14 possible calendar variations.
Year starts on Sun, Mon..... Leap year starts on Sun, Mon..
I can label these early year "types" as a number between 0 and 13.
Let's say 2005 is type 5, and that 1655 is too. (In both years Jan 1 falls on a Saturday)
I'm trying to create a function that will identify the "type" of year.
function getYearType(year){
return Number // number between 0 and 13
}
Am i breaking any rules when I loop dates like
// Determine Memorial Day
intFlag = 0;
memDayHol = new Date (currentYear, 4, 31);
while (intFlag == 0) {
if (memDayHol.getDay() == 1) {intFlag =1;}
else {memDayHol = memDayHol - 1;}
}
I can find no docs that one can use the '+' operator directly on a date
object, and it assumes adding/subtracting a day(s). Is this deprecated
code?
How to extend the constructor for the date object of the javasccript so that whenever a call is made to the constructor, I want to perform a particular action? Basically how to define wrappers for default javascript methods or objects like Date() so that I can perform some action and then invoke the original method? So basically if I have something like var a = new Date(); I want it to (say) alert the value of the date everything Date() is called and then execute the default date constructor.
View 3 Replies View RelatedThe goal is for selectedDay to be assigned the value of the system variable Mainpackage.subclass0.subclass1.firstDay and then incremented by two days. Mainpackage.subclass0.subclass1.firstDay needs to be unchanged.
Important system variable in red. To be 'manipulated and used' variable in green. Even with an intermediary, third, dummy variable it doesn't work:
Console log is:
It doesn't work in my webapp : All variables change at the same time.
Is it possible to convert a String of date like 12/25/2005 01:00PM to a Date object?
View 14 Replies View RelatedI have a question about what the most certain method to obtain the correct UTC time in javascript is.On my forum, there is a countdown clock, that should show the same amount, wherever the user is located. I use UTC in javascript to get the current time, but I have trouble getting consistent results.I have tried two methods:Method 1:
Code:
var d = new Date();
var localTime = d.getTime();
[code]......
I am trying to find a format for a string that could be used to instantiate a Date object which would include only a month and a year.I can't find documentation on what formats of dates are accepted.
View 6 Replies View RelatedIn the below, I would expect this to return the number of milliseconds since the epoch. Instead, it's generating a massive negative number. I presume I've gone wrong with the set[Blah] methods.
javascript Code:
var date_text = '2009-03-06 12:00:00';
var d_tried = new Date();
d_tried.setYear(parseInt(date_text.substr(0,3)));
d_tried.setMonth(parseInt(date_text.substr(5,6)));
d_tried.setDate(parseInt(date_text.substr(8,9)));
[Code]....
I was wondering if it is true that the Date object gets its date from the user's local time, if so, could the user "hack" the time by adjusting his local time?
View 6 Replies View RelatedThe Date Object returns GMT
Firefox gives: Date {Sat Jul 23 2011 18:02:12 GMT+0100 (Cen)}
Chrome gives: Sat Jul 23 2011 18:02:12 GMT+0100 (Eastern Standard Time)
I was expecting: Sat Jul 23 2011 14:02:12 GMT+0600 (Eastern Standard Time)
My Windows XP (x86) PC gives me expected results.
I am facing issue in below code for Brisilia time zone.(GMT-3). Issue comes in October month only. It is going tobig loop. I am not getting how Date object is behaving here.
[Code]...
I just got this script for a countdown on a website and I got it to work locally but when I upload it to the server i get the error "index.html:22 Uncaught TypeError: Object [object Object] has no method 'fancycountdown'".
I have checked to make sure all other javascript files are loading and they are and I can't figure out whats wrong. You can see it [URL]
I was working on Date() object of javascript. When I write:
today=new Date();
year=today.getYear();
month=today.getMonth();
day=today.getDay();
Here everything was correct but when I print month then I got currentmonth-1 that if the currentmonth is 5 then t get 4. If the current month is 07 then I get 06. At last I worked by adding 1 with month like month+1.
I am trying to use my date Object function to get the date from the comp but my variables in my function are coming up undefined.
Here is my function:
function displayTime() {
var currentTime, hour, minute, second, range, m, s
currentTime = new Date()
var hourInt = currentTime.getHours()
var minuteInt = currentTime.getMinutes()
var secondInt = currentTime.getSeconds()
if (hourInt > 12) {
range = "PM"
hourInt -= 12
} else {
range = "AM"
}
hour = String(hourInt)
if (minuteInt < 10) {
m = String(0) + String(minuteInt)
} minute = m
if (secondInt < 10) {
s = String(0) + String(secondInt)
} second = s
document.timeForm.timeBox.value = hour + ":" + minute + ":" + second + " " + range
alert(hour + ":" + minute + ":" + second + " " + range)
Well, this is acutally a couple different scripts. First is the custom date object myDate which retrieves pretty much every value that you'd need from a date and sets it as a property. If no argument is supplied, the current time and date is used. If you do supply an argument, you can send an existing javascript Date object, or a string that is compatible with declaring a normal javascript Date object.
The 2nd part of this script is the method getDate (and some accompanying String methods) that allow you to retrieve the date as a string by passing it a format string just like the PHP date() (http://www.php.net/manual/en/function.date.php) function accepts. The code posted below includes sufficient (I think) examples to help you understand what is going on. You will notice that I didn't duplicate EVERY code over from PHP, and a few are slightly different. Those that I left out I felt weren't very necessary, or I didn't feel like doing the algorithm for them :D.
Both myDateObj.getDate() and PHP's date() allow you to include text into the string that you don't want parsed, but each handles it differently. In PHP, you need to escape characters normally with a backslash. For getDate you need to proceed each character with a pipe "|". So, instead of$dateStr = date("Day z");as it would be in PHP, you would usevar d = new myDate();
var dateStr = d.getDate("D|a|y| z");There are more examples of how this works below.
Note: There is also a nice arrayReplace() method for strings that is handy for doing multiple replace() operations all at once, so I guess this is really like 3 handy scripts ;)
<html>
<head>
<title>test</title>
<meta http-equiv="expires" content="0">
<script type="text/javascript">
/*** First Part of Script, the custom date object ***/
function myDate(dateStr) {
if (typeof dateStr != 'undefined') {
var d = new Date(dateStr);
this.dateString = dateStr;
}
else if (typeof dateStr == 'object')
var d = dateStr;
else
var d = new Date();
var months = ['January','February','March','April','May','June','July','August','September','October','November',' December'];
var weekDays = ['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'];
var monthDays = [31,28,31,30,31,30,31,31,30,31,30,31];
this.epoch = d.getTime();
this.epochS = Math.round(this.epoch / 1000);
this.year4 = d.getFullYear();
this.year2 = parseInt(this.year4.toString().substring(2));
this.leap = (this.year4 % 400 == 0) ? true : (this.year4 % 4 == 0 && this.year4 % 100 != 0) ? true : false;
if (this.leap) monthDays[1]++;
this.mnth = d.getMonth();
this.month = this.mnth + 1;
this.month_2 = leadingZero(this.month);
this.monthName = months[this.mnth];
this.monthNameShort = this.monthName.substring(0,3);
this.days = monthDays[this.mnth];
this.dy = d.getDay();
this.day = this.dy + 1;
this.dayName = weekDays[this.dy];
this.dayNameShort = this.dayName.substring(0,3);
this.date = d.getDate();
this.date_2 = leadingZero(this.date);
this.suffix = (this.date % 10 == 1 ) ? "st" : (this.date % 10 == 2) ? "nd" : (this.date % 10 == 3) ? "rd" : "th";
this.hours24 = d.getHours();
this.hours24_2 = leadingZero(this.hours24)
this.hours12 = (this.hours24 == 0) ? 12 : (this.hours24 > 12) ? this.hours24-12 : this.hours24;
this.hours12_2 = leadingZero(this.hours12);
this.minutes = d.getMinutes();
this.minutes_2 = leadingZero(this.minutes);
this.seconds = d.getSeconds();
this.seconds_2 = leadingZero(this.seconds);
this.millis = d.getMilliseconds();
this.ampm = (this.hours24 == 0) ? "am" : (this.hours24 >= 12) ? "pm" : "am";
this.GMTstring = d.toGMTString();
this.offset = d.getTimezoneOffset();
function leadingZero(num) {
return (num < 10) ? "0" + num : num.toString();
}
}
myDate.prototype.getDayOfYear = function() {
var total = 0;
var monthDays = [31,28,31,30,31,30,31,31,30,31,30,31];
if (this.leap) monthDays[1]++;
for (var i=0; i<this.mnth; total += monthDays[i++]) {}
total += this.date;
return total;
}
/*** Second part of script, the PHP-like parsed output ***/
myDate.prototype.getDate = function(str) {
var p = ['a','A','B','d','D','F','g','G','h','H','i','I','j','l','L','m','M','n','O','r','s','S','t','T','U', 'w','W','Y','y','z','Z'];
var r = new Array();
var i = 0;
var delChar = "|";
var sNull = "null".delimit(delChar)
r[i++] = this.ampm.delimit(delChar);
r[i++] = this.ampm.toUpperCase().delimit(delChar);
r[i++] = sNull;
r[i++] = this.date_2;
r[i++] = this.dayNameShort.delimit(delChar);
r[i++] = this.monthName.delimit(delChar);
r[i++] = this.hours12;
r[i++] = this.hours24;
r[i++] = this.hours12_2;
r[i++] = this.hours24_2;
r[i++] = this.minutes_2;
r[i++] = sNull;
r[i++] = this.date;
r[i++] = this.dayName.delimit(delChar);
r[i++] = (this.leap)?1:0;
r[i++] = this.month_2;
r[i++] = this.monthNameShort.delimit(delChar);
r[i++] = this.month;
r[i++] = this.offset;
r[i++] = this.GMTstring.delimit(delChar);
r[i++] = this.seconds_2;
r[i++] = this.suffix.delimit(delChar);
r[i++] = this.days;
r[i++] = sNull;
r[i++] = this.epochS;
r[i++] = this.dy;
r[i++] = sNull;
r[i++] = this.year4;
r[i++] = this.year2;
r[i++] = this.getDayOfYear();
r[i++] = sNull;
for (i=0; i<p.length; i++)
p[i] = "/" + p[i] + "(?!|)/g";
return str.arrayReplace(p, r).replace(/|/g,"");
}
String.prototype.arrayReplace = function(arrP, arrR) {
var p, s = this;
for (var i=0; i<arrP.length; i++) {
var flags = arrP[i].substring(arrP[i].lastIndexOf("/")+1);
var regex = arrP[i].substring(1,arrP[i].lastIndexOf("/"));
p = new RegExp(regex, flags);
s = s.replace(p, arrR[i]);
}
return s;
}
String.prototype.delimit = function(char) {
var s = "";
for (var i=0; i<this.length; i++) {
s += this.charAt(i) + char;
}
return s;
}
</script>
</head>
<body>
<script type="text/javascript">
/*** Example using current date/time ***/
var md1 = new myDate();
document.write(md1.getDate("l jS of F Y h:i:s A")+"<br>");
document.write(md1.getDate("T|o|d|a|y| i|s| m.d.y")+"<br>");
document.write(md1.getDate("D M j G:i:s Y")+"<br>");
document.write("It " + (md1.leap?"is":"is not") + " a leap year<br>");
document.write("The unix epoch occurred " + md1.epochS + " seconds ago");
document.write("<hr>");
/*** Example using javascript Date object as argument ***/
var d1 = new Date(2000, 01, 02, 15, 15, 15);
var md2 = new myDate(d1);
document.write(md2.getDate("l jS of F Y h:i:s A")+"<br>");
document.write(md2.getDate("T|o|d|a|y| i|s| m.d.y")+"<br>");
document.write(md2.getDate("D M j G:i:s Y")+"<br>");
document.write("It " + (md2.leap?"is":"is not") + " a leap year<br>");
document.write("The unix epoch occurred " + md2.epochS + " seconds ago");
document.write("<hr>");
/*** Example using Date object compatible string as argument ***/
var md3 = new myDate("December 10, 1978 12:23:00");
document.write(md3.getDate("l jS of F Y h:i:s A")+"<br>");
document.write(md3.getDate("T|o|d|a|y| i|s| m.d.y")+"<br>");
document.write(md3.getDate("D M j G:i:s Y")+"<br>");
document.write("It " + (md3.leap?"is":"is not") + " a leap year<br>");
document.write("The unix epoch occurred " + md3.epochS + " seconds ago");
</script>
</body>
</html>
I have a select with a OnChange Function. I would like to know how to create a different object depending on the selection on the Select.
Example:
MySelect have Option 1 and Option 2, so
If (Myselect.value == Option 1)
{Create Object 1}
If (Myselect.value == Option 2)
{Create Object 2}
I'm using the object under <body> and it's working, but when I'm trying to use it under a <script> does not work.
This is the object I'm trying to create: (It is a map) so what I'm trying is to change the values or map depending on the selection of the Select.
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0" width="900" height="600" id="zoom_map" align="top">
<param name="movie" value="us_albers.swf?data_file=senate.xml" />
<param name="quality" value="high" />
[Code]....
How can i create an input object (text area,select) at runtime ?
View 3 Replies View RelatedI know I can use the functions like parseFromString() to access and modify an existing XML documents, but is it possible to use JavaScript to create a blank xml document?
I want to take data entered into the client, package it up as XML and use ajax to transmit it to the server. So far I've written my own class to create a simple xml document, but I'd like to do it properly with the inbuilt functions.