关闭页面时不会删除cookie？

Question

i was create cookie (page load counting) whenever page load and then next delete cookies whenever close the window

my problem : cookies are not deleted

mycode: http://jsfiddle.net/Y3xs7/6

Edit: i remove expire date but no luck

Answer 1

将此代码写在script标签的任何地方

window.onbeforeunload=clear_cookie;

Answer 2

You set the cookie to expire after one month.

var futdate = new Date()
var expdate = futdate.getTime()
expdate += 3600000 * 24 *30  //expires in 1 hour (ed note: actually one MONTH)
futdate.setTime(expdate)

var newCookie="pageCount="+counter
newCookie += "; expires=" + futdate.toGMTString()
window.document.cookie=newCookie

Persistent cookies (those with specific expiration dates) are not deleted when the browser closes.

If you don't give the cookie an expiration date, it becomes a session cookie, which is deleted when the browser closes.

Also note that as of Chrome 19 and Firefox 3 , session cookies aren't deleted if the browser's startup mode option is "continue where I left off."