We recently switched from cookies to using sessionStorage - the trigger for switching was IE issues.

Now, we're discovering that sessionStorage doesn't work across sub-domains - the storage of www.site.com is isolated from that of site.com.

Is there a modern alternative to get the two to cooperate? This is easily accomplished by cookies, but I'd hate to revert from sessionStorage, or (gasp) use both methods concurrently.

有帮助吗?

解决方案

This is almost a hack, and its not secure but it's a neat trick never the less. JavaScript object window.name can hold strings of data and the data does persist even when loading a new page or switching domains. Check this SO about it here:

Using window.name as a local data cache in web browsers

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