I currently am using this to create a Unix time stamp for time (now) -1 year's time.
Can someone please share a better and more efficient way to do this?
var currentDate = new Date();
var currentYear = currentDate.getFullYear();
var lastYear = parseInt(currentYear) - 1;
var lastYearDateObj = new Date(lastYear, currentDate.getMonth(), currentDate.getDate(), currentDate.getHours(), currentDate.getMinutes());
var lastYearTime = lastYearDateObj.getTime() / 1000;
Thank you!
I don't understand what your division by 1000 is about. You can add it to the end if you like:
var date = new Date();
date.setFullYear(date.getFullYear() - 1);
// date.getTime() / 1000 // if you want.
Related
I have no experience with JS, but I need to get the time from a node red flow where the payload return the date in this format : 2022-09-03 08:23:39.806170+00:00 and then compare to the sensor.time which is the current date to return the elapsed time.
so something like this VarElapsed to (MyPayload - sensor.time)
again I have no experience with JS so I would thing this would be the result but thatss probably doesn't make any sense...
var d=new Date();
var start_time=payload
d=new Date();
var end_time=d.getTime()
var difference =end_time-start_time;
The format is cool to instantiate a new Date object.
var payload = "2022-09-03 08:23:39.806170+00:00";
var start_time = (new Date(payload)).getTime();
var d = new Date();
var end_time = d.getTime()
var difference = end_time - start_time;
console.log("difference in ms: ", difference)
I need to find out if my date is between two dates (for checking birthday whether its between +/- 10 days of current date) without taking care of year (because for birthday we don't need year).
I have tried the following but its typical match and will not ignore year. If i ll compare only date and month then overlap on month end makes problems.
(moment(new Date()).isBetween(moment(date).add(10, 'days'), moment(date).subtract(10, 'days')));
Here is the solution that i was end up with.
const birthDate= new Date(birthDate);
birthDate.setFullYear(new Date().getFullYear());
const isBirthdayAround = Math.abs(birthday - new Date) < 10*24*60*60*1000;
And if you are using moment then:
const birthDate= new Date(birthDate);
birthDate.setFullYear(new Date().getFullYear());
const isBirthdayAround = moment(new Date()).isBetween(moment(birthDate).subtract(10, 'days'), moment(birthDate).add(10, 'days'));
if(Math.abs(birthday - new Date) < 10/*d*/ * 24/*h*/ * 60/*min*/ * 60/*secs*/ * 1000/*ms*/)
alert("somewhat in the range");
You can just work with dates as if they were milliseconds. Just get the difference by subtracting them, then check if its smaller than 10 days in milliseconds.
You can use momentjs with methods subtract and add to find any date you want.
Example:
moment().add(7, 'days'); // next 7 days
moment().subtract(7, 'days'); // 7 days ago
This may be help you.
var birthDate = new Date("05/16/1993");
var day = birthDate.getDate();
var month = birthDate.getMonth();
var currentDate = new Date();
var tempDate = new Date();
var oneDay = 1000 * 60 * 60 * 24
var dayDifference = 10 // you can set here difference
tempDate = new Date(tempDate.setMonth(month,day))
var timeDiff = tempDate.getTime() - currentDate.getTime();
timeDiff = Math.round(timeDiff / oneDay)
if(-dayDifference <= timeDiff && timeDiff <=dayDifference){
alert("matched")
}
else{
alert("not matched")
}
I have javascript array in which the date coming in is in this format
2015-11-25T17:54:19.033
However, I am not really concerned with the time
so I end up with
11/25/15
What I want to do in my loop is to LOOK at the date ( either 2015-11-25T17:54:19.033 or 11/25/15 , whatever is easier) and just set a variable to "NEW" if it is within the last 10 days
I was attempted to play around with this code and it does not give me what I want at all
var dt = "11/25/15";
var today = new Date()
var priorDate = new Date().setDate(today.getDate()-10)
console.log(dt);
console.log(today);
console.log(priorDate);
pseudo code of what i WANT
if ( dt <= today ) {
x = "NEW";
}
So my thoughts are that it need to be in Date objects in javascript but i'm not sure
Update
So say in a loop i have these variables that occur
for ....
dt = 9/13/15
Output = 9/13/15
next time in loop
dt = 11/24/15
Output = NEW - 11/24/15
Working jsfiddle
http://jsfiddle.net/bthorn/yr009hwd/
You are correct. You need to convert the string date to a date time object in javascript to do the comparison.In order to do the comparison, you need to get the millisec of the dates using getTime()
var dt = new Date("11/22/2015");
var today = new Date();
if ( dt.getTime() < today.getTime() ) {
alert('Past');
}
else
alert('future');
To check if the date difference is within 10 days:
var dt = new Date("11/12/2015");
var today = new Date();
var dateDiffDays = Math.ceil((Math.ceil(dt.getTime() - today.getTime()))/(1000 * 3600 * 24));
if( dateDiffDays >= -10 && dateDiffDays <= 10)
alert('date within 10 days');
Depending on the format of your date string, you can probably just do:
var dateToTest = new Date(dt);
//get 10 days earlier
dateToTest.setDate(dateToTest.getDate() - 10);
var today = new Date();
if ( dateToTest < today ) {
x = 'NEW';
}
//see if a date is within the last 10 days
var tenDaysAgo = new Date(); //current date
tenDaysAgo.setDate(tenDaysAgo.getDate() - 10); //ten days ago
//if you don't care about the time
tenDaysAgo.setHours(0);
tenDaysAgo.setMinutes(0);
tenDaysAgo.setSeconds(0);
tenDaysAgo.setMilliseconds(0);
var someDateToTest = new Date('11-1-2015');
if (tenDaysAgo > someDateToTest) {
//this is new
x = 'NEW';
}
I have an add date and I need to know how many days ago this record was added, so today - adddate. This is in mm/dd/yyyy format (10/16/2014) and I wanted to know if there is an easy way to get the difference without adding a new plugin. Thanks!
var today = $.datepicker.formatDate('mm/dd/yy', new Date());
var adddate = $('#adddate').val();
alert(today - adddate);
Assuming both values are inside inputs, this works.
var d1 = $('#adddate').datepicker('getDate');
var d2 = $('#today').datepicker('getDate');
var diff = 0;
if (d1 && d2) {
diff = Math.floor((d2.getTime() - d1.getTime()) / 86400000); // ms per day
}
alert(diff)
$(document).ready(function() {
var date = new Date();
var data_new = [];var url ='http://www.domain.com /kjdshlka/api.php?date=2014-07-15';
$.getJSON(url,function(result) {
var elt = [date,result.requests];data_new.push(elt);console.log(data_new);
});
});
I am struggling to decrement the date by one day using javascript for loop.Here is my code,from the url im getting some requests.like if i decrease the date by one day other requests will come .Now i need this process for 7days using javascript for loop.Can anybody please tel me how to do ?
var date = new Date(); // Date you want, here I got the current date and time
date.setDate(date.getDate()-1);
getDate() will give you the date, then reduce it by 1 and using setDate() you can replace date again.
var today = new Date();
var yesterday = new Date(today.getTime() - (24 * 60 * 60 * 1000)); //(hours * minutes * seconds * milliseconds)
console.log(yesterday);
var now = new Date();
console.log(now);
var yesterday = new Date(now - 86400000);
console.log(yesterday);
/* In a Decrement Loop*/
for(var i=100;i>0;i--){
console.log(new Date(now - i*86400000));
}