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Date doesnt work - tag value in setFullYear

var d = new Date();
var gunler= ["Pazar","Pazartesi","Salı","Çarşamba","Perşembe","Cuma","Cumartesi"];
document.getElementById("gun").innerHTML = gunler[d.getDay()];
var ic = document.getElementsByClassName("i");
var dis = document.getElementsByClassName("d");
var ll = document.getElementById("seciligun");
var ll2 = ll.innerHTML;
alert(ll2);
d.setFullYear(ll2);
var a=0;
while(a<ic.length){
if(gunler[d.getDay()]=="Cumartesi"||gunler[d.getDay()]=="Pazar"){
ic[a].innerHTML="";
}
else{
dis[a].innerHTML="";
}
a=a+1;
}
I using these codes in my js file , i taking date in my div tag that id = seciligun. When i use alert it seems like this : 2020-08-15 but when i say alert(d) , browser saying "invalid date". If i write like this d.setFullYear(2020-08-15) everything works correctly but i need use tag's value that id = seciligun.

You need to extract the year from ll2.
var y = ll2.split('-')[0];
d.setFullYear(y);

Get a combined Date from ui.bootstrap date and time pickers

I'm trying to combine the Datepicker and Timepicker directives to get the date from the first and the time from the second in a combined Date object. I came across some examples that are not using these directives like this one Combining Date and Time input strings as a Date object. However when I try to apply something similar to my case it's not working. Console returns "TypeError: $scope.dt.split is not a function". Above is the function I try to use which is called by $watch.
function tryCombineDateTime() {
if ($scope.dt && $scope.mytime) {
var dateParts = $scope.dt.split('-');
var timeParts = $scope.mytime.split(':');
if (dateParts && timeParts) {
dateParts[1] -= 1;
$scope.fullDate = new Date(Date.UTC.apply(undefined, dateParts.concat(timeParts))).toISOString();
}
}
}
Here is a plunker showing the problem. http://plnkr.co/edit/tnbE3LWQTTzLhLWXLCQB?p=preview
I would prefer a solution based on my Plunker as I don't want to install other components like DateTimePicker.

Date format has been changed, so exception is being thrown, Try this
function tryCombineDateTime() {
if ($scope.dt && $scope.mytime) {
var date = $scope.dt.toString();
var time = $scope.mytime.toString();
var dateParts = date.split(' ');
var timeParts = time.split(' ');
if (dateParts && timeParts) {
dateParts[4] = timeParts[4]
$scope.fullDate = new Date(dateParts.join(' ')).toISOString();
}
}
}

your tryCombineDateTime function sould be like this:
function tryCombineDateTime() {
if ($scope.dt && $scope.mytime) {
$scope.fullDate =new Date($scope.dt.getFullYear(), $scope.dt.getMonth(), $scope.dt.getDate(),$scope.mytime.getHours(),$scope.mytime.getMinutes()).toISOString();
}
}
this a working demo forked from your plunker

How to test different format of dates in javascript / jquery?

I am developing a application. In this application have a input field. where the user can input the dates by different formats like
ddmmyy, ddmmyyyy, dd-mm-yy, mm-dd-yy
And I need to verify the date whether that valid or not. I can able to validate this way:
YYYY-MM-DD using:
var myDate = new Date("1987-08-06") // it returns me the date while this valid.
But I can't able to validate with other formats. how can i validate that?
example:
var myDate = new Date("08-06-1987")..etc?
I developed my app using jQuery. I am looking some solution without using a plug-in. since i used no.of plugins already.
thanks in advance!

I would do it with regular expressions. You could define a regexp pattern for each of your formats. Then you can test if the String from the input field matches any of the pattern.
Somthing like this:
var regExpDDMMYY = /[0-9]{2}[0-1][0-9][0-9]{2}/g;
var regExpddmmyyyy = ...;
...
...
if (regExpDDMMYY.test(yourInputStringFromDateField)) {
// handleDateAs DDMMYY
} else if (regExpddmmyyyy .test(yourInputStringFromDateField)) {
...
} else {
throw new YourException();
}
You can find an example here:
http://www.w3schools.com/js/js_regexp.asp

Unfortunately, there's no "parseExact" in native JS, that would also be crossbrowser. So you either need to use Date.js library or write some converter.
For this task i'd recommend you to use "Chain of responsibility" pattern
function DateTimeParser() {
this.parse = function (input) {
for (var key in Parsers) {
var result = Parsers[key].parse(input);
if (result !== null)
return result;
}
return null;
};
this.parseExact = function (input, format) {
var parser = Parsers[format];
return parser ? parser.parse(input) : null;
};
var ConcreteDateTimeParser = function (expression, parser) {
this.parse = function (input) {
if (!input.match(expression))
return null;
var result = parser(input);
return isNaN(result.getDate()) ? null : result;
};
};
var Parsers = {
"dd-mm-yyyy": new ConcreteDateTimeParser(/\d{2}\-\d{2}\-\d{4}/, function (input) {
var dd = parseInt(input.slice(0, 2)),
mm = parseInt(input.slice(3, 5)),
yyyy = parseInt(input.slice(-4));
return new Date(yyyy, mm, dd);
}),
"ddmmyyyy": new ConcreteDateTimeParser(/\d{8}/, function (input) {
var dd = parseInt(input.slice(0, 2)),
mm = parseInt(input.slice(2, 4)),
yyyy = parseInt(input.slice(-4));
return new Date(yyyy, mm, dd);
})
};
};
var instance = new DateTimeParser();
instance.parse('22122012');
instance.parseExact('22122012', 'ddmmyyyy');
instance.parseExact('22122012', 'dd-mm-yyyy'); // null
From this you can extend your Parsers lib with additional parsers. You also can use different sets of parsers by passing them into DateTimeParser as a constructor argument. My code is pretty trivial, for i didn't want to write it mega-deep, just wanted to show the way =)

create javascript timestamp from innerhtml string values

I'd like to create a javascript timestamp based on a rails date_select and time_select property. I attached an onChange function to the select helper and fetching the innerhtml to read the values into a div which works fine. Now I want to use those strings from the select property and create a timestamp in js (using it for validations).
I did first try this by making integers from the innerhtml values:
function insertText10()
{
var start_day = document.new_link['link[start_at(3i)]'];
var start_month = document.new_link['link[start_at(2i)]'];
var start_year = document.new_link['link[start_at(1i)]'];
var start_hour = document.new_link['link[start_at(4i)]'];
var start_minute = document.new_link['link[start_at(5i)]'];
var selOption1 = start_day[start_day.selectedIndex];
var selOption2 = start_month[start_month.selectedIndex];
var selOption3 = start_year[start_year.selectedIndex];
var selOption4 = start_hour[start_hour.selectedIndex];
var selOption5 = start_minute[start_minute.selectedIndex];
start_date = new Date(parseInt(selOption3.innerHTML),parseInt(selOption2.innerHTML),parseInt(selOption1.innerHTML),parseInt(selOption4.innerHTML),parseInt(selOption5.innerHTML),0,0);
then by using strings:
start_date = new Date(selOption3.innerHTML+selOption2.innerHTML+selOption1.innerHTML+selOption4.innerHTML+selOption5.innerHTML);
but neither works.
What am I doing wrong?
--
PS: I checked the w3s docu http://www.w3schools.com/jsref/jsref_obj_date.asp to find the solution above.

Solved:
start_date = new Date(parseInt(selOption3.value),parseInt(selOption2.value),parseInt(selOption1.value),parseInt(selOption4.value),parseInt(selOption5.value),0,0);

Change order in a date with javascript

If I have a date like 8/9/2010 in a textbox, how can I easiest set a variable to the value 201098?
Thanks in advance.

var date = "8/9/2010";
var result = date.split('/').reverse().join('');
EXAMPLE: http://jsfiddle.net/hX357/
To add leading zeros to the month and day (when needed) you could do this:
var date = "8/9/2010";
var result = date.split('/');
for( var i = 2; i--; )
result[i] = ("0" + result[i]).slice(-2);
result = result.reverse().join('');
EXAMPLE: http://jsfiddle.net/hX357/2/

I would recommend using Datejs to process your dates.
You can do something like
date.toString("yyyyMMdd");
to get the date in the format you want

Using regex:
"8/9/2010".replace(/([0-9]+)\/([0-9]+)\/([0-9]+)/,"$3$2$1")

Do a split on '/', take the last element and make it the first of a new string, the middle element becomes the middle element of the new string, and the first element becomes the last element of a new string.
It would be like this:
myString = document.getElementById('date_textbox').value;
var mySplitResult = myString.split("\");
var newString = mySplitResult[2] + mySplitResult[1] + mySplitResult[0];
This is basically the idea I think you are going for.
-Brian J. Stinar-
Dang, it looks like I was beaten to the punch...

Or you can use the built-in JavaScript Date class:
function processDate(dStr) {
var d = new Date(dStr);
return d.getFullYear() + (d.getMonth() + 1) + d.getDate();
}
processDate("8/9/2010");
Easiest to manage and debug, certainly.