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Javascript – Convert date to format Thu Jan 01 1970 01:00:00 GMT+010 to date yyyy/mm/dd

I’m working on an Angular web app that has a date field form that uses angular material datepicker.
When the user selects a date with the datepicker, the value of the date I retrieve is in the format:
Thu Jan 01 1970 01:00:00 GMT+010, I would like to convert into yyyy/mm/dd

Are there any built function to convert?

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3

Answers


  1. 0

    Since you use angular you can also use the datePipe. This would also be my recommended approach.

     {{ youdate | date:'y/MM/d' }}

    Otherwise you can do it like so using the date object, however I recommend a lib like dayjs which provides a format function.

    Note that getMonth is 0 based and getDate returns a number between 1 and 31

    const d = new Date();

const toFormat = (d) => {
  return `${d.getFullYear()}/${(d.getMonth()+1).toString().padStart(2, '0')}/${d.getDate().toString().padStart(2, '0')}`
}

console.log(toFormat(d));
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  2. 0

    The question is if you are actually receiving that as a string or as a date object (they usually look like that when console.logged).

    But anyway you should be able to convert using either Intl.DateTimeFormat, or more conveniently the Date method toLocaleDateString

    let dateVar = 'Thu Jan 01 1970 01:00:00 GMT+010');
let converted = new Date(dateVar).toLocaleDateString('sv-SE');

    Here I chose ‘Swedish’ (sv) and location Sweden (SE) with gives "1970-01-01". I don’t know if there is a country that has "1970/01/01" as standard. If not just keep Sweden as above and replace "-" with "/".

    let dateVar = 'Thu Jan 01 1970 01:00:00 GMT+010');
let converted = new Date(dateVar).toLocaleDateString('sv-SE')
.replaceAll('-','/');

    Note: This does not change the time zone to Sweden, just the format of the date.

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  3. 0

    Alternatively, you can leverage ISO string which is always the same format YYYY-MM-DDTHH:mm:ss.sssZ

    In order to format it as YYYY/MM/DD you simply:

    • take first 10 characters of the ISO string
    • replace all - with /
    function formatDate(date) {
    return date.toISOString().substring(0, 10).replaceAll('-', '/');
}
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