Marc Nuri created WICKET-5605:
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Summary: Store browser capabilities in local variables in
wicket-event-jquery.js
Key: WICKET-5605
URL: https://issues.apache.org/jira/browse/WICKET-5605
Project: Wicket
Issue Type: Improvement
Components: wicket
Reporter: Marc Nuri
Priority: Minor
Methods in Wicket.Browser js class (such as isIE, isKHTML, isSafari... )
perform a regular expression test in windows.navigator.userAgent variable each
time they are called.
It would improve performance if these methods stored their result in a variable
for future checks.
As described in this InMethodGrid issue
(https://github.com/wicketstuff/core/issues/308#issuecomment-44816191),
recursive calls to these methods in a Windows environment with Chrome version
35 are killing the CPU.
The solution is as simple as caching the result of the regexp test the first
time the method is called and return the variable value in subsequent calls.
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