Check If a Date Is Today in JavaScript or Node.js

Modern applications show lots of useful information right in the user interface. For example, you as a user want to see if something is due today and be notified about the event.

As a developer you need to make sure you’re showing the right items for today. That’s where this tutorial helps you out by walking you through a way to check whether a given date is “today”.

Node.js Series Overview

  1. String Replace All Appearances
  2. Remove All Whitespace From a String in JavaScript
  3. Generate a Random ID or String in Node.js or JavaScript
  4. Remove Extra Spaces From a String in JavaScript or Node.js
  5. Remove Numbers From a String in JavaScript or Node.js
  6. Get the Part Before a Character in a String in JavaScript or Node.js
  7. Get the Part After a Character in a String in JavaScript or Node.js
  8. How to Check if a Value is a String in JavaScript or Node.js
  9. Check If a String Includes All Strings in JavaScript/Node.js/TypeScript
  10. Check if a Value is a String in JavaScript and Node.js
  11. Limit and Truncate a String to a Given Length in JavaScript and Node.js
  12. Split a String into a List of Characters in JavaScript and Node.js
  13. How to Generage a UUID in Node.js
  14. Reverse a String in JavaScript or Node.js
  15. Split a String into a List of Lines in JavaScript or Node.js
  16. Split a String into a List of Words in JavaScript or Node.js
  17. Detect if a String is in camelCase Format in Javascript or Node.js
  18. Check If a String Is in Lowercase in JavaScript or Node.js
  19. Check If a String is in Uppercase in JavaScript or Node.js
  20. Get the Part After First Occurrence in a String in JavaScript or Node.js
  21. Get the Part Before First Occurrence in a String in JavaScript or Node.js
  22. Get the Part Before Last Occurrence in a String in JavaScript or Node.js
  23. Get the Part After Last Occurrence in a String in JavaScript or Node.js
  24. How to Count Words in a File
  25. How to Shuffle the Characters of a String in JavaScript or Node.js
  26. Append Characters or Words to a String in JavaScript or Node.js (Coming soon)
  27. Check if a String is Empty in JavaScript or Node.js (Coming soon)
  28. Ensure a String Ends with a Given Character in JavaScript or Node.js (Coming soon)
  29. Left-Trim Characters Off a String in JavaScript or Node.js (Coming soon)
  30. Right-Trim Characters Off a String in JavaScript or Node.js (Coming soon)
  31. Lowercase the First Character of a String in JavaScript or Node.js (Coming soon)
  32. Uppercase the First Character of a String in JavaScript or Node.js (Coming soon)
  33. Prepend Characters or Words to a String in JavaScript or Node.js (Coming soon)

Determine If a Date Is Today in JavaScript

Determining if a date is today means that the compared date has the same year, month, and day as the current day. You can implement that in JavaScript using the built-in date functions.

JavaScript’s Date provides methods to retrieve the year, month, and day in a month.

Use the Date#getDate method to retrieve the day in a month. Intentionally you may looked for a getDay method. But the getDay function returns the day of the week instead of the day of the month.

Also, you should use the getFullYear method to retrieve the current year instead of the getYear method, because getYear returns the years since 1900 and not the full year number. You may want to look at this tutorial on retrieving the year number in JavaScript.

Here’s a sample function allowing you to detect whether a given date is today:

/**
 * Determine whether the given `date` is today.
 *
 * @param {Date} date
 *
 * @returns {Boolean}
 */
function isToday (date) {  
  const now = new Date()

    return date.getDate() === now.getDate() &&
         date.getMonth() === now.getMonth() &&
         date.getFullYear() === now.getFullYear()
}

Now you can use the isToday function from above like this:

isToday(new Date())  
// true

isToday(new Date('2022-10-31'))  
// false

Enjoy checking dates for today!


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