getElementByName() for date - javascript

I am trying to evaluate inputs on client side using javascript. The getElementByName() method is working for text type inputs. But I want to compare two dates using JS. But getElementByName() is not working for date type inputs!
Someone please help!
Here is my code:
<script type="text/javascript">
function validate()
{
var startdate = document.getElementByName("startdate").valueOf();
alert(startdate);
var enddate = document.getElementByName("enddate").value;
submitOK=true;
if(startdate>enddate)
{
alert("start date should not be greater than end date");
submitOK=false;
}
return submitOK;
}
</script>

If you want to get started quickly, add unique ids to both your date inputs, and then use
document.getElementById("startdate").value;
for example to get both values.
And then regarding of their format, a string comparison can be enough (I don't know because you did not mention anything about that), or then you could do something like
var endDate = document.getElementById("startdate").value;
endDate = new Date(endDate);
That will give you access to date specific methods that can be handy.
More on this here.

Related

How can I convert the value I get with datetimepicker to date and time?

var innerDate = document.getElementById('datetimepicker3').value;
The format I get from this line is: innerDate: "2021/07/07 14:00"
But I need to parse the date and time information here. How can I convert Start Date and Start Time into two separate variables?
I would recommend to parse that string with moments.js and then depending on your needs either get the individual parts for calculations or apply needed formatting
Example available at https://jsfiddle.net/Ly6qen3w/
let innerDateInput = "2021/07/07 14:00";
let innerDateMoment = moment(innerDateInput, "YYYY/MM/DD hh:mm");
console.log("Date:"+innerDateMoment.format("YYYY-MM-DD"));
console.log("Time:"+innerDateMoment.format("hh:mm"));
Try this:
var innerDate = new Date(document.getElementById('datetimepicker3').value)
Or you can attach an event handler to get the date whenever it changes
<script type="text/javascript">
$("#datetimepicker3").on("dp.change", function (e) {
let date = e.date;
console.log(date);
// no need to convert to a date
});
</script>
You can simple get that in different variable using various methods that are provided by JavaScript to get everything.
You can do is(id it's a date object else you have to convert it to date object)
let startDate = new Date(innerDate).getDate() + "/" + new Date(innerDate).getMonth() + "/" + new Date(innerDate).getFullYear();
let startTime = new Date("2021/07/07 14:00").getHours() +":"+ new Date("2021/07/07 14:00").getMinutes()
If you want something else you can retrieve that too with methods such as milliseconds,UFC time etc.
If you find this messy I would suggest you to use moment.js.
https://momentjs.com/

getEventsForDay() formatting issues with datepicker return value

I'm trying to use the Calendar API to pull up some events based on datepicker output. The issue that i'm facing with my AppScript is formatting properly the value that i get from the datepicker that will serve as input for the getEventsForDay() function.
function testing(){
var z = CalendarApp.getCalendarsByName("X")[0];
var date = new Date('2016-10-12');
var dateformatted =Utilities.formatDate(date), "GMT", "yyyy-MM-dd hh:mm:ss a");
var a = z.getEventsForDay(dateformatted, {search: 'OOO'});
The output of a into this scenario is a empty object - which is expected because this formatting is not working at all. (i've read 1000 posts that this should work).
For context as well, i have one working example with today's date, which it works fine becase the input is a new Date(). Here you go:
var datetoday = new Date();
var b = z.getEventsForDay(datetoday, {search: 'OOO'});
Any ideas on what i'm missing here?
Thanks in advance.
Since new Date() returns the Date object in UTC and not the local timezone, you may be querying the wrong day and hence the empty object if the other day does not have any events.
You can covert the date to the current timezone like
date.setTime(date.getTime() + date.getTimezoneOffset()*60*1000)
This should return the date in the local timezone and you will get the events for the correct day.
Hope it helps
Made some changes and now this works on the App Script:
var t = "2016-10-01";
var q = t.replace(/-/g,"/");
var a = new Date(q);
a.setTime(a.getTime() + a.getTimezoneOffset()*60*1000)
var w = z.getEventsForDay(a, {search: 'OOO'});
Logger.log(a);
Logger.log(w);

How can I get date and time separately using jQuery?

In my table date is listed as "2015-07-31 06:02:20". How can I get date and time separately using jQuery?
I used some code but it shows some errors.
var timestamp = new Date(data.responsecusthistory.created_at);
var date = timestamp.toDateString();
Error: Invalid Date
var date = data.responsecusthistory.created_at.split(" ")[0];
var time = data.responsecusthistory.created_at.split(" ")[1];
If you want to have a time string (i.e. HH:MM:SS), try e.g. this:
var timestampTime = timestamp.toTimeString().split(' ')[0];
Anyway, there's no obvious reason why you get the "Error: Invalid Date", as long as
data.responsecusthistory.created_at
is a correct value, such as "2015-07-31 06:02:20". Please consider double-checking this variable.
Try this:
dateString= "2015-07-31 06:02:20";
temp = new Date(dateString);
dateStr= $.datepicker.formatDate('mm/dd/yy', temp );
for getting different formats check the link https://github.com/phstc/jquery-dateFormat.
Using different formats we will get different date, time etc in which ever forms we need it.

Full Calendar Get current date

I've been learning Ruby over the last year and I'm very new to JS so I'll try to explain this as best I can.
I am using Adam Shaw's full calendar plugin. All I want to do is get the current month I am viewing (and use that to limit how far in the future or past a user can navigate, but that's not the problem).
I can get the current date, sort of. But, because of my lack of JS knowledge I'm not sure how to access the date.
Here is the relevant section of the config file,
viewRender: function(view){
var maxDate = "<%= finish.strftime('%Y/%m/%d') %>";
var currentDate = $('#calendar').fullCalendar('getDate');
console.log(currentDate);
if (view.start > maxDate){
header.disableButton('prev');
}
}
When I inspect the console log I see this being output as I click through the months.
So as you can see it is displaying the current date in view. My question is how do I access the _d bit of the Moment variable so I can use it?
My understanding would be that the Moment is class instance and the stuff in the dropdown is like its attributes, would this be a correct interpretation?
To get the current date of the calendar, do:
var tglCurrent = $('#YourCalendar').fullCalendar('getDate');
This will return the date as a moment object. You can then format it as a string in the usual date format like so:
var tgl=moment(tglCurrent).format('YYYY-MM-DD');
For the actual time, use the format: YYYY-MM-DD LTS
FullCalendar's getDate returns a moment object, so you need moment's toDate() method to get date out of it.
So, in you code try:
console.log(currentDate.toDate());
and that should return a date object.
var moment = $('#YourCalendar').fullCalendar('getDate');
var calDate = moment.format('DD.MM.YYYY HH:mm'); //Here you can format your Date

JQuery Datepicker change value attribute of div when current date is selected

The jQuery Datepicker is working great, but I would like the submit button to read different text based on whether or not the day selected is today. The submit button is a <button> and the text is the value attribute.
Is there any way to do this? My web searches haven't turned up any results.
Try like below
var dp = $('#datepicker').datepicker("getDate");
1) using the above statement, you can get the date that has be selected in datepicker (ie., parsed as date datatype)
2) Using date.toDateString(), you can get the date string which can be used to compare with datepicker's date.
$('#datepicker').datepicker();
$('button').on('click', function () {
var dp = $('#datepicker').datepicker("getDate");
var today = new Date();
if (today.toDateString() == dp.toDateString()) {
//write your code to change the text in div
}
});
FYI: value attribute is not associated with div element, I guess you're referring to custom data* value attribute.
If so then you can change it using .data() method of jQuery. Example
$('div').data('value', 'whatever you wish');
JSFiddle
If I Understood your question correctly, You want to make sure that date picked is today or not, upon submission of form.
I've gone through google, ended up with an answer, Hope It work out.
function ValidRange(date1)
{
var date=new date(); //Today
//Convert these dates into milliseconds
var date1_ms=date1.getTime();
var date_ms=date.getTime();
//Calculate difference between them
var difference_ms = date_ms - date1_ms;
return difference_ms; // It will return 0 if date is today.
}
Note: You then need to parse the strings you are getting from the UI, with Date.parse, like this:
ValidRange(Date.parse(Date_Picked));
Try this.

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