jsf.js: performance improvement by eval call and exists call reduction
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Key: MYFACES-2846
URL: https://issues.apache.org/jira/browse/MYFACES-2846
Project: MyFaces Core
Issue Type: Improvement
Affects Versions: 2.0.1
Reporter: Werner Punz
While most of the performance now is spend on send and dom replaceElement
without too much possibilities of further improvements on the client side
there, we still have speed optimization potential. Currently about 5-8% of the
execution time is spent on evaling anonymous functions and within the exists
function.
We probably can reduce both calls to a big degree by eliminating exists in
favor of undefined checks where it makes sense (mostly in the module binding
part)
and by trying to reduce generally the calls into anonymous functions (which
comes also with the elimination of exists if called outside of _Runtime for
instance in _Lang which delegates _Runtime.
Note there is a 5% speed difference between dev and production due to the
_ExtLang object which is only present in dev which is just an AOP wrapper
around _Lang which adds the logging functions missing for prod.
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