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how to get all weekdays from a date range and duration

So i have an initialDate, a travelTime and a endDate,
we also have booleans representing the weekdays
lets say we whave the following:
initialDate = 06 Jun 2021
travelTime = 13:00 to 18:00
mon = true, tue = false, wed = true, thu: false, fri = false
endDate = initialDate + 1 month
i need to get all mondays and wednesday dates between initialDate and endDate

In this code bellow, using momentjs, I create two array, one for Mondays and one for Wednesdays formatted like you wrote the date in your question.
const dateFormatTemplate = 'DD MMM YYYY';
const initialDate = moment('06 Jun 2021', dateFormatTemplate);
const endDate = moment(initialDate).add(1, 'month');
const MONDAY = 1; // moment().day() return a value from 0 to 6(Sunday-to-Saturday)
const WEDNESDAY = 3;
const mondayArray = [];
const wednesdayArray = [];
while (initialDate.isSameOrBefore(endDate)) {
if (initialDate.day() === MONDAY) mondayArray.push(initialDate.format(dateFormatTemplate));
else if (initialDate.day() === WEDNESDAY) wednesdayArray.push(initialDate.format(dateFormatTemplate));
initialDate.add(1, 'day');
}
console.log('ALL MONDAY', mondayArray)
console.log('ALL WEDNESDAY', wednesdayArray);
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js"></script>

adding days to historical dates in app script [duplicate]

This question already has answers here:
How to add days to Date?
(56 answers)
Closed 2 years ago.
I am trying to pull some historical data, which has a variety of time stamps. I want the use to a user selected date, and then pull all days + some additional days.
Date1 is
var Date1 = "Thu Oct 22 00:00:00 GMT-04:00 2020"
var startDate = new Date(Date1)
var Enddate = new Date();
Enddate.setDate(startDate + 10);
This doesn't work. I cant seem to figure out how to add the "10 days" to the Date1 variable.

You need the getDate function of the Date object, and you'll need to pass the correct value when instantiating the new Date.
Try this:
var Date1 = "Thu Oct 22 00:00:00 GMT-04:00 2020"
var startDate = new Date(Date1);
// add it to startDate, using getDate()
startDate.setDate(startDate.getDate() + 10);
// now startDate will be 10 days later:
startDate; // Sun Nov 01 00:00:00 GMT-04:00 2020
// if you want an entirely new Date object, then instantiate a new one:
var Enddate = new Date(startDate);
If you want two different variables, then you can use the approach similar to what you tried, like so:
var Date1 = "Thu Oct 22 00:00:00 GMT-04:00 2020"
var startDate = new Date(Date1), second = new Date(Date1); // we're using another temporary variable
// add the days
second.setDate(second.getDate() + 10);
// now use Enddate with this
var Enddate = new Date(second);
Enddate; // Sun Nov 01 00:00:00 GMT-04:00 2020

You can't just add a number to a Date object to get a new date.
You can add to a date by:
getting the current day of the month with getDate()
adding a number of days to that result
setting the new date with setDate()
const Date1 = "Thu Oct 22 00:00:00 GMT-04:00 2020";
const addDays = 10;
const startDate = new Date(Date1);
const startDays = startDate.getDate();
const newDate = new Date(startDate);
newDate.setDate(startDays + addDays);
console.log('startDate:', startDate.toISOString());
console.log('newDate:', newDate.toISOString());
Note:
Passing a string into the Date constructor is discouraged, as it produces inconsistent results across browsers.
It is better to pass in the individual date and time values:
const Date1 = new Date(2020, 9, 22, 0, 0, 0);

How to get current month datas from mysql using javascript?

I have table of records and need to get only current month records.
CODE:
let startDate = req.body.startDate
let endDate = req.body.endDate
let result = await caseRegistration.findByDate({ pathology_id : req.body.pathology_id,
created_at: {
'>=': new Date(startDate),
'<=': new Date(endDate)
}
})
Above code I am passing particular dates to get records. But my requirement is If request doesn't have any date then I want to get only current month data. Can you please help me?

var date = new Date();
var firstDay = new Date(date.getFullYear(),date.getMonth(), 1);
var lastDay = new Date(date.getFullYear(),date.getMonth(), daysInMonth(date.getMonth()+1,
date.getFullYear()));
firstDay=>Tue Sep 01 2020 00:00:00 GMT+0530 (India Standard Time)
lastDay=> Wed Sep 30 2020 00:00:00 GMT+0530 (India Standard Time)
Please take care of timezone & date formate you want(it could be any)

If startDate and endDate are empty find first date and last date of current month by using this :
var date = new Date();
var firstDateOfCurrentMonth = new Date(date.getFullYear(), date.getMonth(), 1);
var endDateOfCurrentMonth = new Date(date.getFullYear(), date.getMonth() + 1, 0);
Now you can assign these dates to startDate and endDate
statDate=firstDateOfCurrentMonth;
endDate=endDateOfCurrentMonth;

new Date can't give me right time

startDate = "2019-03-07 (목) 12:00";
var year = startDate.slice(0,4);
var month = startDate.slice(5,7);
var day = startDate.slice(8,10);
var hour = startDate.slice(15,17);
var minute = startDate.slice(18,20);
var selEndDatetime = new Date(year, month, day, hour, minute);
console.log(selEndDatetime);
I want to see "Tue Mar 07 2019 12:00:00 GMT+0900 (한국 표준시)", but console shows me the message "Sun Apr 07 2019 12:00:00 GMT+0900 (한국 표준시)".
What is wrong this code and how can I modify it to get the desired output?

The month starts at 0. You need to parse month from string to integer and minus 1 when creating a date instance.
startDate = "2019-03-07 (목) 12:00";
var year = startDate.slice(0,4);
var month = parseInt(startDate.slice(5,7))
var day = startDate.slice(8,10);
var hour = startDate.slice(15,17);
var minute = startDate.slice(18,20);
var selEndDatetime = new Date(year, month - 1, day, hour, minute);
console.log(selEndDatetime);

You can simply pass the startDate string as an argument to the Date in order to create selEndDatetime
Code:
const startDate = '2019-03-07 (목) 12:00';
const selEndDatetime = new Date(startDate);
console.log(selEndDatetime);

Converting milliseconds to a date (jQuery/JavaScript)

I'm a bit of a rambler, but I'll try to keep this clear -
I'm bored, so I'm working on a "shoutbox", and I'm a little confused over one thing. I want to get the time that a message is entered, and I want to make sure I'm getting the server time, or at least make sure I'm not getting the local time of the user. I know it doesn't matter, since this thing won't be used by anyone besides me, but I want to be thorough. I've looked around and tested a few things, and I think the only way to do this is to get the milliseconds since January 1, 1970 00:00:00 UTC, since that'd be the same for everyone.
I'm doing that like so:
var time = new Date();
var time = time.getTime();
That returns a number like 1294862756114.
Is there a way to convert 1294862756114 to a more readable date, like DD/MM/YYYY HH:MM:SS?
So, basically, I'm looking for JavaScript's equivalent of PHP's date(); function.

var time = new Date().getTime(); // get your number
var date = new Date(time); // create Date object
console.log(date.toString()); // result: Wed Jan 12 2011 12:42:46 GMT-0800 (PST)

If you want custom formatting for your date I offer a simple function for it:
var now = new Date;
console.log( now.customFormat( "#DD#/#MM#/#YYYY# #hh#:#mm#:#ss#" ) );
Here are the tokens supported:
token: description: example:
#YYYY# 4-digit year 1999
#YY# 2-digit year 99
#MMMM# full month name February
#MMM# 3-letter month name Feb
#MM# 2-digit month number 02
#M# month number 2
#DDDD# full weekday name Wednesday
#DDD# 3-letter weekday name Wed
#DD# 2-digit day number 09
#D# day number 9
#th# day ordinal suffix nd
#hhhh# 2-digit 24-based hour 17
#hhh# military/24-based hour 17
#hh# 2-digit hour 05
#h# hour 5
#mm# 2-digit minute 07
#m# minute 7
#ss# 2-digit second 09
#s# second 9
#ampm# "am" or "pm" pm
#AMPM# "AM" or "PM" PM
And here's the code:
//*** This code is copyright 2002-2016 by Gavin Kistner, !#phrogz.net
//*** It is covered under the license viewable at http://phrogz.net/JS/_ReuseLicense.txt
Date.prototype.customFormat = function(formatString){
var YYYY,YY,MMMM,MMM,MM,M,DDDD,DDD,DD,D,hhhh,hhh,hh,h,mm,m,ss,s,ampm,AMPM,dMod,th;
YY = ((YYYY=this.getFullYear())+"").slice(-2);
MM = (M=this.getMonth()+1)<10?('0'+M):M;
MMM = (MMMM=["January","February","March","April","May","June","July","August","September","October","November","December"][M-1]).substring(0,3);
DD = (D=this.getDate())<10?('0'+D):D;
DDD = (DDDD=["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"][this.getDay()]).substring(0,3);
th=(D>=10&&D<=20)?'th':((dMod=D%10)==1)?'st':(dMod==2)?'nd':(dMod==3)?'rd':'th';
formatString = formatString.replace("#YYYY#",YYYY).replace("#YY#",YY).replace("#MMMM#",MMMM).replace("#MMM#",MMM).replace("#MM#",MM).replace("#M#",M).replace("#DDDD#",DDDD).replace("#DDD#",DDD).replace("#DD#",DD).replace("#D#",D).replace("#th#",th);
h=(hhh=this.getHours());
if (h==0) h=24;
if (h>12) h-=12;
hh = h<10?('0'+h):h;
hhhh = hhh<10?('0'+hhh):hhh;
AMPM=(ampm=hhh<12?'am':'pm').toUpperCase();
mm=(m=this.getMinutes())<10?('0'+m):m;
ss=(s=this.getSeconds())<10?('0'+s):s;
return formatString.replace("#hhhh#",hhhh).replace("#hhh#",hhh).replace("#hh#",hh).replace("#h#",h).replace("#mm#",mm).replace("#m#",m).replace("#ss#",ss).replace("#s#",s).replace("#ampm#",ampm).replace("#AMPM#",AMPM);
};

You can simply us the Datejs library in order to convert the date to your desired format.
I've run couples of test and it works.
Below is a snippet illustrating how you can achieve that:
var d = new Date(1469433907836);
d.toLocaleString(); // expected output: "7/25/2016, 1:35:07 PM"
d.toLocaleDateString(); // expected output: "7/25/2016"
d.toDateString(); // expected output: "Mon Jul 25 2016"
d.toTimeString(); // expected output: "13:35:07 GMT+0530 (India Standard Time)"
d.toLocaleTimeString(); // expected output: "1:35:07 PM"

Below is a snippet to enable you format the date to a desirable output:
var time = new Date();
var time = time.getTime();
var theyear = time.getFullYear();
var themonth = time.getMonth() + 1;
var thetoday = time.getDate();
document.write("The date is: ");
document.write(theyear + "/" + themonth + "/" + thetoday);

Try using this code:
var datetime = 1383066000000; // anything
var date = new Date(datetime);
var options = {
year: 'numeric', month: 'numeric', day: 'numeric',
};
var result = date.toLocaleDateString('en', options); // 10/29/2013
See more: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleDateString

Try using this code:
var milisegundos = parseInt(data.replace("/Date(", "").replace(")/", ""));
var newDate = new Date(milisegundos).toLocaleDateString("en-UE");
Enjoy it!

so you need to pass that var time after getTime() into another new Date()
here is my example:
var time = new Date()
var time = time.getTime()
var newTime = new Date(time)
console.log(newTime)
//Wed Oct 20 2021 15:21:12 GMT+0530 (India Standard Time)
here output is my datetime standard format for you it will be in country format
if you want it in another format then you can apply another date function on var newTime
like
var newTime = new Date(time).toDateString()
console.log(newTime)
//Wed Oct 20 2021

Try this one :
var time = new Date().toJSON();

One line code.
var date = new Date(new Date().getTime());
or
var date = new Date(1584120305684);

/Date(1383066000000)/
function convertDate(data) {
var getdate = parseInt(data.replace("/Date(", "").replace(")/", ""));
var ConvDate= new Date(getdate);
return ConvDate.getDate() + "/" + ConvDate.getMonth() + "/" + ConvDate.getFullYear();
}

Assume the date as milliseconds date is 1526813885836, so you can access the date as string with this sample code:
console.log(new Date(1526813885836).toString());
For clearness see below code:
const theTime = new Date(1526813885836);
console.log(theTime.toString());

use datejs
new Date().toString('yyyy-MM-d-h-mm-ss');