why javascript can not read the cookie in asp.net ?

Posted by MemoryLeak on Stack Overflow See other posts from Stack Overflow or by MemoryLeak
Published on 2009-09-14T10:53:59Z Indexed on 2010/04/25 4:53 UTC
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ASP.NET

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cookie

I want to read the sessionid in cookie which is automatically generated by asp.net. such as ASP.NET_SessionId. but when i use javascript: document.cookie = "ASP.NET_SessionId=;" since i want to set the ASP.NET_SessionId to be empty.

but after the javascript executed, i found instead of change the ASP.NET_SessionId to empty, system generate a new cookie with ASP.NET_SessionId equal to empty.

why system not modify the cookie but generate a new one ?

Thanks!

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