W3C home > Mailing lists > Public > public-web-perf@w3.org > December 2010

About window.performance namespace

From: Zhiheng Wang <zhihengw@google.com>
Date: Wed, 15 Dec 2010 21:57:12 -0800
Message-ID: <AANLkTimeFZp+hzFA=P3gR_8VAoMTEhuYKPvFAKNEO22x@mail.gmail.com>
To: public-web-perf <public-web-perf@w3.org>
Cc: Jonas Sicking <jonas@sicking.cc>, Sigbjørn Vik <sigbjorn@opera.com>, Simon Pieters <simonp@opera.com>
Hi, folks,

   In today's conf call, the group discussed the issue of using
window.performance namespace. The following proposal was
brought up in a follow-up meeting this afternoon. It has been acknowledged
by Anderson/Nic (IE) and Tony/James (Chrome)
and we would like to hear feedback from others as well.

     * NavigationTiming will use window.performance namespace.
     * window.performance will be replaceable
     * window.performance.timing and window.performance.navigation will be
kept read-only.

   Having window.performance replaceable avoid breaking existing
javascripts. Keeping the timing and navigation objects read-only
does not guarantee the integrity of timing attributes but makes forging
these interfaces less trivial.

   Please share your thoughts.

Received on Thursday, 16 December 2010 05:57:43 UTC

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