Date format using Javascript-CodePudding

How to get the formatted date from data result?

var obj = data.map(row => ({
     id: row[0],
     status: row[1],
     datepublished: row[2]
}));

This is the result when i didnt format the datepublished field

[
    {
        "id": 440937003,
        "status": "Not Available",
        "datepublished": "2022-03-27T16:00:00.000Z"
    }
]

var obj = data.map(row => ({
     id: row[0],
     status: row[1],
     datepublished: new Date(row[2].getTime() - (row[2].getTimezoneOffset() * 60000 )).toISOString().split("T")
}));

This is my current result data

[
    {
        "id": 440937003,
        "status": "Not Available",
        "datepublished": [
            "2022-03-28",
            "00:00:00.000Z"
        ]
    },
]

what I want result is

[
    {
        "id": 440937003,
        "status": "Not Available",
        "datepublished": "2022-03-28"
    },
]

CodePudding user response：

const data = [
  {
    id: 440937003,
    status: 'Not Available',
    datepublished: '2022-03-27T16:00:00.000Z',
  },
];

const parsedData = data.map(({ id, status, datepublished }) => ({
  id,
  status,
  datepublished: datepublished.slice(0, 10),
}));

console.log(parsedData)

CodePudding user response：

Your ISO 8601 string is in UTC as the Z indicates so split()[0] or substring(0, 10) are the best option if you need UTC.

In case you need your string in another timezone parse it first and then use toLocaleDateString() with locale of en-CA (this will print year-month-day) and whatever timezone you need as an option like this:

// For UTC
const iso8601str = "2022-03-27T16:00:00.000Z";
const split = iso8601str.split("T")[0];
const substring = iso8601str.substring(0, 10);

// For another timezone
// parse first, then format in desired timezone
// locale "en-CA" ensures format of year-month-day
const asiaDateStr = new Date(iso8601str).toLocaleDateString(
  "en-CA",
  { timeZone: "Asia/Shanghai" } // options objects which also takes timeZone as an argument
);
console.log("In UTC wiht split():", split);
console.log("In UTC with substring():", substring);
console.log("In Asia/Shanghai:", asiaDateStr);

Have a look at the MDN docs to see what options exist for timeZone.