Create javascript cookie in greasemonkey

Question

I am trying to create a cookie with greasemonkey to stop the popup (after the windows pop up, the cookie is created, the window will not pop up many times ... this is the code

function setCookie(c_name, value, expiredays) { var exdate = new Date(); exdate.setDate(exdate.getDate()+expiredays); document.cookie = c_name + "=" + escape(value) + ((expiredays==null) ? "" : ";expires="+exdate.toUTCString()); } var cookie_names = [ 'showDrushimPopUnderUserClick', 'showDrushimPopUnder308' ]; for (var i in cookie_names) { setCookie(cookie_names[i], 1, 0); } 

but cookie not created ...

Answer 1

If you set a cookie with an expires value equal to or older than the current system clock, it actually deletes the named cookie (if path or domain different, or if it is a “safe” cookie - none of them apply here).

It:

 setCookie(cookie_names[i], 1, 0); 

Forces this function to set a cookie with an instant expiration value, effectively deleting any cookie with this name.

To set a new cookie, use:

 setCookie(cookie_names[i], 1, null); 

which will force your code to set a session cookie - which is probably what you need.

Or use:

 setCookie(cookie_names[i], 1, 1); 

To set a cookie that expires in a day.