How to Check If a Cookie is Expired: A Step-by-Step Guide

Learn how to easily check if a cookie has expired using JavaScript in this concise guide.

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Check the 'Expires' attribute in the cookie's data or use JavaScript to compare the current date to the cookie's expiration date. For instance, in JavaScript: `document.cookie` returns all cookies; split them and parse each to find the expiration date. If the expiration date has passed, the cookie is expired.

FAQs & Answers

  1. What is a cookie in web development? A cookie is a small piece of data stored by a web browser that is used to remember information about a user or session.
  2. How do cookies work? Cookies work by holding data in the form of key-value pairs, which are sent back and forth between the web server and user’s browser.
  3. Can expired cookies affect my website? Yes, expired cookies can lead to user session issues, causing them to lose relevant data or permissions until they log back in.
  4. How do I delete cookies? You can delete cookies by using your browser settings or by manually setting the cookie’s expiration date to a past date using JavaScript.

Watch More

For more insights on web development and programming best practices, check out our tutorials on managing cookies and JavaScript functions.

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