Expire a Cookie in 30 minutes using jQuery

My go-to jQuery plugin for setting cookies is jquery.cookie. It’s quick, easy and lightweight. You can set a cookie with a simple script in your javascript file:

$.cookie('the_cookie', 'the_value');

I always end up using it with an expiration:

$.cookie('the_cookie', 'the_value', { expires: 7 });

One issue with the script is that the expiration is set in days. A recent project that I worked on required a cookie for a dialog box to expire after 30 minutes. Thirty minutes is 30 * 60 * 1000 milliseconds – add this to the current date and you can set an expiration date 30 minutes in the future using the following script:

var date = new Date();
var minutes = 30;
date.setTime(date.getTime() + (minutes * 60 * 1000));
$.cookie('the_cookie', 'the_value', { expires: date });

With this script, you can set any number of minutes for your specific needs.

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