Format date and Subtract days using Moment.js
JavascriptDateMomentjsJavascript Problem Overview
I would like a variable to hold yesterday's date in the format DD-MM-YYYY using Moment.js. So if today is 15-04-2015, I would like to subtract a day and have 14-4-2015.
I've tried a few combinations like this:
startdate = moment().format('DD-MM-YYYY');
startdate.subtract(1, 'd');
and this:
startdate = moment().format('DD-MM-YYYY').subtract(1, 'd');
and also this:
startdate = moment();
startdate.subtract(1, 'd');
startdate.format('DD-MM-YYYY')
But I'm not getting it...
Javascript Solutions
Solution 1 - Javascript
You have multiple oddities happening. The first has been edited in your post, but it had to do with the order that the methods were being called.
.format returns a string. String does not have a subtract method.
The second issue is that you are subtracting the day, but not actually saving that as a variable.
Your code, then, should look like:
var startdate = moment();
startdate = startdate.subtract(1, "days");
startdate = startdate.format("DD-MM-YYYY");
However, you can chain this together; this would look like:
var startdate = moment().subtract(1, "days").format("DD-MM-YYYY");
The difference is that we're setting startdate to the changes that you're doing on startdate, because moment is destructive.
Solution 2 - Javascript
var date = new Date();
var targetDate = moment(date).subtract(1, 'day').toDate(); // date object
Now, you can format how you wanna see this date or you can compare this date with another etc.
toDate() function is the point.
Solution 3 - Javascript
startdate = moment().subtract(1, 'days').format('DD-MM-YYYY');
Solution 4 - Javascript
Try this:
var duration = moment.duration({'days' : 1});
moment().subtract(duration).format('DD-MM-YYYY');
This will give you 14-04-2015 - today is 15-04-2015
Alternatively if your momentjs version is less than 2.8.0, you can use:
startdate = moment().subtract('days', 1).format('DD-MM-YYYY');
Instead of this:
startdate = moment().subtract(1, 'days').format('DD-MM-YYYY');
Solution 5 - Javascript
In angularjs moment="^1.3.0"
moment('15-01-1979', 'DD-MM-YYYY').subtract(1,'days').format(); //14-01-1979
or
moment('15-01-1979', 'DD-MM-YYYY').add(1,'days').format(); //16-01-1979
``
Solution 6 - Javascript
I think you have got it in that last attempt, you just need to grab the string.. in Chrome's console..
startdate = moment();
startdate.subtract(1, 'd');
startdate.format('DD-MM-YYYY');
"14-04-2015"
startdate = moment();
startdate.subtract(1, 'd');
myString = startdate.format('DD-MM-YYYY');
"14-04-2015"
myString
"14-04-2015"
Solution 7 - Javascript
startdate = moment().subtract(1, 'days').startOf('day')