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Message-ID: <2202844.iGi71jj4uv@PointedEars.de>
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <usenet@PointedEars.de>
Organization: PointedEars Software (PES)
Date: Fri, 09 Aug 2013 14:58:04 +0200
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Subject: Re: how to track cookie deleting?
Newsgroups: comp.lang.javascript
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Lison Allen wrote:

> Any one know how to track cookie deleting, find where was the specified
> cookie delete?

<http://devtoolsecrets.com/>
 
> Already ruled out being delete by request header. So it can only be delete
> by javascript, right?

By any client-side ECMAScript implementation in that environment (there is 
no javascript¹).

Look for assignments to “document.cookie”, where the right-hand side 
contains “0” or “new Date()”.  A way to delete a (non-HTTP-only) cookie is

  document.cookie = "cookie_name=…;max-age=0";

or

  document.cookie = "cookie_name=…;expires=" + (new Date()).getUTCString();

<https://developer.mozilla.org/en-US/docs/Web/API/document.cookie>

______
¹ <http://PointedEars.de/es-matrix>

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PointedEars

Twitter: @PointedEars2
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