Cookie Usage SameSite property.
1. meSite = Strict;
In this mode, the server will be a complete ban on third-party Cookie, during cross-site, under no circumstances will send Cookie, that is to say, only the current page URL will be brought in line with the set and when the Domain Cookie Path requirements.
2. In meSite = Lax;
Lax rules relax a little, in most cases it is not sending a third-party Cookie, but navigating to the destination URL of Get requests otherwise. GET request to navigate to your destination URLs, including only three cases: links, preload request, GET form. The table below.
3. meSite = None
Namely: no limit, which is currently the default settings, but ready to Lax Chrome as the default so this None at present appears to be meaningless, because they do not write SameSite means None..