javascript - How to get 30 days prior to current date?

Javascript - How to get 30 days prior to current date?

You can get the date that is 30 days prior to the current date in JavaScript by creating a new Date object, subtracting 30 days, and then obtaining the formatted date. Here's an example:

function get30DaysAgo() { const today = new Date(); const thirtyDaysAgo = new Date(today); thirtyDaysAgo.setDate(today.getDate() - 30); // Format the date as needed (e.g., as a string) const formattedDate = `${thirtyDaysAgo.getFullYear()}-${(thirtyDaysAgo.getMonth() + 1).toString().padStart(2, '0')}-${thirtyDaysAgo.getDate().toString().padStart(2, '0')}`; return formattedDate; } const thirtyDaysAgo = get30DaysAgo(); console.log(thirtyDaysAgo);

In this example, get30DaysAgo function creates a Date object representing the current date (today), then creates a new Date object (thirtyDaysAgo) by subtracting 30 days from the current date. Finally, it formats the date as a string in the "YYYY-MM-DD" format.

You can adjust the formatting according to your requirements. The padStart method is used to ensure that single-digit months and days are zero-padded.

Examples

  1. "JavaScript get 30 days ago from current date"

    • Code Implementation:
      const currentDate = new Date(); const thirtyDaysAgo = new Date(); thirtyDaysAgo.setDate(currentDate.getDate() - 30);
    • Description: This code creates a Date object for the current date and then calculates a new Date object representing 30 days ago by subtracting 30 days from the current date.

  2. "JavaScript get previous month's date 30 days ago"

    • Code Implementation:
      const currentDate = new Date(); const thirtyDaysAgo = new Date(currentDate.getFullYear(), currentDate.getMonth() - 1, currentDate.getDate()); thirtyDaysAgo.setDate(thirtyDaysAgo.getDate() - 30);
    • Description: This code calculates the date from the previous month and then subtracts 30 days to get a date 30 days ago.

  3. "JavaScript calculate date 30 days ago using UTC"

    • Code Implementation:
      const currentDate = new Date(); const thirtyDaysAgo = new Date(currentDate.getTime() - 30 * 24 * 60 * 60 * 1000);
    • Description: This code uses the UTC timestamp to calculate a date 30 days ago by subtracting the equivalent milliseconds.

  4. "JavaScript get 30 days ago formatted as YYYY-MM-DD"

    • Code Implementation:
      const currentDate = new Date(); const thirtyDaysAgo = new Date(currentDate.getTime() - 30 * 24 * 60 * 60 * 1000); const formattedDate = thirtyDaysAgo.toISOString().split('T')[0];
    • Description: This code calculates the date 30 days ago and then formats it as "YYYY-MM-DD" using the toISOString method.

  5. "JavaScript get date 30 days ago with specific time"

    • Code Implementation:
      const currentDate = new Date(); const thirtyDaysAgo = new Date(); thirtyDaysAgo.setDate(currentDate.getDate() - 30); thirtyDaysAgo.setHours(12, 0, 0, 0); // Set a specific time, e.g., 12:00:00
    • Description: This code sets a specific time (in this case, 12:00:00) for the date 30 days ago.

  6. "JavaScript calculate 30 days ago excluding weekends"

    • Code Implementation:
      const currentDate = new Date(); const thirtyDaysAgo = new Date(currentDate.getTime() - 30 * 24 * 60 * 60 * 1000); while (thirtyDaysAgo.getDay() === 0 || thirtyDaysAgo.getDay() === 6) { thirtyDaysAgo.setDate(thirtyDaysAgo.getDate() - 1); }
    • Description: This code adjusts the date to exclude weekends (Sunday and Saturday) in the calculation of 30 days ago.

  7. "JavaScript get date 30 days ago with specific timezone"

    • Code Implementation:
      const currentDate = new Date(); const thirtyDaysAgo = new Date(currentDate.getTime() - 30 * 24 * 60 * 60 * 1000); const timezoneOffset = 5; // Example: UTC+5 thirtyDaysAgo.setMinutes(thirtyDaysAgo.getMinutes() - thirtyDaysAgo.getTimezoneOffset() + timezoneOffset * 60);
    • Description: This code sets a specific timezone offset for the date 30 days ago.

  8. "JavaScript calculate date 30 days ago with moment.js"

    • Code Implementation:
      const currentDate = moment(); const thirtyDaysAgo = currentDate.subtract(30, 'days').toDate();
    • Description: This code uses the moment.js library to easily calculate the date 30 days ago.

  9. "JavaScript calculate business days 30 days ago"

    • Code Implementation:
      const currentDate = new Date(); let businessDaysAgo = new Date(currentDate); const weekdaysToSubtract = 30; while (weekdaysToSubtract > 0) { businessDaysAgo.setDate(businessDaysAgo.getDate() - 1); if (businessDaysAgo.getDay() !== 0 && businessDaysAgo.getDay() !== 6) { weekdaysToSubtract--; } }
    • Description: This code calculates business days (excluding weekends) for the date 30 days ago.

  10. "JavaScript calculate date 30 working days ago"

    • Code Implementation:
      const currentDate = new Date(); let workingDaysAgo = new Date(currentDate); const workingDaysToSubtract = 30; while (workingDaysToSubtract > 0) { workingDaysAgo.setDate(workingDaysAgo.getDate() - 1); if (workingDaysAgo.getDay() !== 0 && workingDaysAgo.getDay() !== 6) { workingDaysToSubtract--; } }
    • Description: This code calculates working days (excluding weekends) for the date 30 days ago.

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