jQuery cookie过期检测

Question

I am using JQuery $.cookie to save some data in my app and was wondering if there is a way to detect if the $.cookie has already expired or not?

I know I can check the content by reading the cookie, but how can I know if the cookie already expired or not? Thanks

Answer 1

If the cookie has already expired, $.cookie('cookieName') will return undefined:

if(typeof $.cookie('cookieName') === 'undefined'){

    // 'cookieName' expired (or never existed)
}

Hope this helps!