How to set time of javascript date object

Question

I have two widgets. A calendar and a Time Widget.

My calendar is a DateTime object Wed Apr 29 2020 00:00:00 GMT-0400 and my time outputs this result 1:00 AM

I would like to Combine the two to make a new DateTime object. May I ask how about do I do that?

I tried this and it didn't work at all.

startDate.setTime(vm.startTime)

It will Help You! https://stackoverflow.com/questions/171251/how-can-i-merge-properties-of-two-javascript-objects-dynamically — void, Apr 30 '20 at 05:29

54ka · Answer 1 · 2020-04-30T05:16:48.567

0

I'm not sure but I think you want this. I hope I've been helpful

var startDate = { Date :"Wed Apr 29 2020 00:00:00 GMT-0400" };
var startTime  = { Time :"1:00 AM" };


var DateTime  = Object.assign(startDate, startTime);

console.log(DateTime);
// { Date: 'Wed Apr 29 2020 00:00:00 GMT-0400', Time: '1:00 AM' }

Edit:

var startDate = { Date :"Wed Apr 29 2020 00:00:00 GMT-0400" };
var startTime  = { Time :"1:00 AM" };

var DateTime = { DateAndTime: startDate.Date + " " + startTime.Time};

console.log(DateTime);
//{ DateAndTime: 'Wed Apr 29 2020 00:00:00 GMT-0400 1:00 AM' }

edited Apr 30 '20 at 05:16

answered Apr 30 '20 at 04:55

54ka

3,501
2
9
24

not quite. that's an object with two properties. A datetime property and a time property. I am looking for a single object, DateTime object. – Master Apr 30 '20 at 04:57
Did you mean an object with one property? – Menai Ala Eddine - Aladdin Apr 30 '20 at 05:08

score 0 · Answer 2 · answered Apr 30 '20 at 05:15

You need to iterate your Object entries and get values to combine them through an array.

 mergeDateTime() {
    const DateTime = {
      a: "Wed Apr 29 2020 00:00:00 GMT-0400",
      b: "1:00 AM",
    };

    const mergedDateTime = [];
    for (let [key, value] of Object.entries(DateTime)) {
      mergedDateTime.push(value);
    }
    return mergedDateTime;
  }

score 0 · Answer 3 · answered Apr 30 '20 at 05:22

Try with splitting you time string and setting Hours value of your date object.

var startDate = "Wed Apr 29 2020 00:00:00 GMT-0400";
var startTime = "1:00 AM";

var result = new Date(startDate);

var hour = parseInt(startTime.split(":")[0]);
var minute = parseInt(startTime.split(":")[1].split(" ")[0]);
var amPmOffset = startTime.split(" ")[1] == "AM" ? 0 : 12;

result.setHours(hour, minute + amPmOffset, 0);

console.log(result.toString());

How to set time of javascript date object

3 Answers3