Add date format into date regex

Question

I am getting date format like this /Date(1495111091673)/.
I have created one custom filter to change date format.

app.filter('jsonDate', function () {
    return function (date) {
        return new Date(date.match(/\d+/)[0] * 1);
    }
})

This filter returns date like this.

Thu May 18 2017 18:08:11 GMT+0530 (India Standard Time)

But I want it as standard format like dd/MM/yyyy so I have edited my filter code like this:

app.filter('jsonDate', function () {
    return function (date) {
        return new Date(date.match(/\d+/)[0] * 1, 'dd MMMM @ HH:mm:ss');
    }
})

Is it correct?

Use moment.js: moment(date).format('DD/MM/YYYY')

Slava Utesinov
– Slava Utesinov

2017-11-16 05:57:37 +00:00
Commented Nov 16, 2017 at 5:57 — Slava Utesinov
– Slava Utesinov, Commented Nov 16, 2017 at 5:57

Phil · Accepted Answer · 2017-11-16 06:30:06Z

1

This filter returns date like this
Thu May 18 2017 18:08:11 GMT+0530 (India Standard Time)

No it doesn't, that's just how your console (or whatever) is choosing to display the Date instance (via Date.prototype.toString()).

I'd just use AngularJS's date filter ~ https://docs.angularjs.org/api/ng/filter/date.

For example (where dateFormat is your "/Date(1495111091673)/" formatted string)

{{dateFormat | jsonDate | date : 'shortDate'}}

Or in JS

let parsed = $filter('jsonDate')(dateFormat)
let dateString = $filter('date')(parsed, 'shortDate')

or via DI

.controller('controllerName', ['dateFilter', 'jsonDateFilter',
function(dateFilter, jsonDateFilter) {
  let dateString = dateFilter(jsonDateFilter(dateFormat), 'shortDate')
}])

edited Nov 16, 2017 at 6:30

answered Nov 16, 2017 at 6:00

Phil

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6 Comments

krish Over a year ago

Your answer is for html.But I am trying to do it in controller.

Phil Over a year ago

@krish then use the JavaScript API mentioned in the documentation

krish Over a year ago

I have sent like this $scope.filterStartDate = $filter('jsonDate')(/Date(1495111091673)/, 'yyyy / MM / dd');. and its returning this format only Thu May 18 2017 18:08:11 GMT+0530 (India Standard Time)

Phil Over a year ago

@krish yeah, because that totally looks like what I've got in my answer. You haven't quoted your strings, nor does your jsonDate filter accept more than one argument

Phil Over a year ago

Yes, and just like I said in my answer, use Angular's date filter. You also appear to be passing a regular expression as the first argument which doesn't make sense

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