Question 186837 in Html Question posted in
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Html – mon. dd, yyyy JavaScript conversion date function not working

i’m trying to convert gen. 02, 2023 date in 2023-01-02 but my function formatDate:

function formatDate(date) {
    var d = new Date(date),
        month = '' + (d.getMonth() + 1),
        day = '' + d.getDate(),
        year = d.getFullYear();

    if (month.length < 2) 
        month = '0' + month;
    if (day.length < 2) 
        day = '0' + day;

    return [year, month, day].join('-');
}

doesn’t seem to work properly.
Can you help me out?

It looks like i receive just NaN-NaN-NaN as value.

Tags:

2

Answers


  1. 0

    You used getMonth() method to get the month number, but the month number is zero-based. So, the month number for January is 0, not 1. You need to subtract 1 from the month number before you pass it to the formatDate() function.

    function formatDate(date) {
    var d = new Date(date),
        month = d.getMonth() - 1,
        day = d.getDate(),
        year = d.getFullYear();

    if (month.length < 2) 
        month = '0' + month;
    if (day.length < 2) 
        day = '0' + day;

    return [year, month, day].join('-');
}
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  2. 0

    Here is my version of this script:

    function formatDate(date) {
  const inputDate = new Date(date);
  const year = inputDate.getFullYear();
  const month = ('0' + (inputDate.getMonth() + 1)).slice(-2);
  const day = ('0' + inputDate.getDate()).slice(-2);
  return `${year}-${month}-${day}`
}

    But please note that is expecting that you will pass a string like ‘Jan. 02, 2023’ and it will return a string. If a detailed explanation is needed can provide as an update.

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