How to Efficiently Create and Delete Cookies in Web Applications?

How to Efficiently Remove Cookies in Web Applications

Managing cookies is crucial for web applications to enhance user experience and maintain data privacy. Here's how to effectively delete unnecessary cookies in your programs.

Creating and Deleting Cookies

Your provided function for creating cookies appears to be incomplete. To create a cookie for a specified number of days, you can use the following revised function:

function setCookie(c_name, value, days) {
  var d = new Date();
  d.setTime(d.getTime() + (days * 24 * 60 * 60 * 1000));
  document.cookie = c_name + "=" + escape(value) + ";expires=" + d.toUTCString();
}

To delete a cookie effectively, we recommend the following function:

function delete_cookie(name, path, domain) {
  if (get_cookie(name)) {
    document.cookie = name + "=;" +
      ((path) ? ";path=" + path : "") +
      ((domain) ? ";domain=" + domain : "") +
      ";expires=Thu, 01 Jan 1970 00:00:01 GMT";
  }
}

Retrieving Cookie Existence

To determine if a cookie exists before deleting it, you can define the following function:

function get_cookie(name) {
  return document.cookie.split(';').some(c => {
    return c.trim().startsWith(name + '=');
  });
}

By utilizing these functions, you can comprehensively manage cookies in your web applications, ensuring optimal performance and user privacy.

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