Project Rongtuli- A Social Media App
Time Ago Count Function()

Here's a step-by-step implementation of the required logic to calculate the time difference between a given post date and the current date and time in plain JavaScript:

JavaScript Function Implementation

function timeAgo(postDateString) {
  const postDate = new Date(postDateString); // Convert input date string to Date object
  const currentDate = new Date(); // Get the current date and time
 
  // Calculate the difference in milliseconds
  const differenceInMilliseconds = currentDate - postDate;
 
  // Define time constants in milliseconds
  const oneMinute = 60 * 1000; // 60 seconds
  const oneHour = 60 * oneMinute; // 60 minutes
  const oneDay = 24 * oneHour; // 24 hours
  const oneMonth = 30 * oneDay; // Approximate 30 days
  const oneYear = 12 * oneMonth; // 12 months
 
  // Calculate the time difference and return appropriate string
  if (differenceInMilliseconds < oneMinute) {
    return "just now";
  } else if (differenceInMilliseconds < oneHour) {
    const minutes = Math.floor(differenceInMilliseconds / oneMinute);
    return `${minutes} minute${minutes > 1 ? "s" : ""} ago`;
  } else if (differenceInMilliseconds < oneDay) {
    const hours = Math.floor(differenceInMilliseconds / oneHour);
    return `${hours} hour${hours > 1 ? "s" : ""} ago`;
  } else if (differenceInMilliseconds < oneMonth) {
    const days = Math.floor(differenceInMilliseconds / oneDay);
    return `${days} day${days > 1 ? "s" : ""} ago`;
  } else if (differenceInMilliseconds < oneYear) {
    const months = Math.floor(differenceInMilliseconds / oneMonth);
    return `${months} month${months > 1 ? "s" : ""} ago`;
  } else {
    const years = Math.floor(differenceInMilliseconds / oneYear);
    return `${years} year${years > 1 ? "s" : ""} ago`;
  }
}
 
// Example Usage
console.log(timeAgo("2024-12-09T02:47:05.389Z")); // Output depends on the current date and time

Explanation

  1. Input Parsing:

    • Convert the given date string into a JavaScript Date object.
    • Get the current date and time using new Date().

  2. Time Difference Calculation:

    • Subtract the postDate from the currentDate to get the difference in milliseconds.

  3. Define Time Constants:

    • Use constants for one minute, one hour, one day, one month, and one year in milliseconds for easier calculations.

  4. Conditional Checks:

    • Check the time difference against these constants to determine the appropriate time period.
    • Format the output string with proper pluralization (e.g., "1 minute" vs. "2 minutes").

  5. Return Result:

    • Return a human-readable string like "20 minutes ago," "1 day ago," etc., based on the calculated time difference.

This function is easy to use and handles the most common cases efficiently.

Error 1: When Building Profile PageControlled Input Not Updating Due to Missing State Update