Array.prototype.forEach used in browsers that do not natively support this
function
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Key: MYFACES-3509
URL: https://issues.apache.org/jira/browse/MYFACES-3509
Project: MyFaces Core
Issue Type: Bug
Components: General
Environment: IE8
Reporter: Mircea Toma
While running one of our test applications in IE8 we got this "Object doesn't
support this property or method" error occurring.
After debugging the code the problem was located in
api/src/main/javascript/META-INF/resources/myfaces/_impl/_util/_Lang.js code.
It seems that 'arrForEach' is trying to use the browser native 'forEach'
function but it fails since IE8 (or IE7) does not implement it.
Here is a constructed call stack that shows when and where the error occurs:
(startPos) ? arr.slice(startPos).forEach(func, thisObj) : arr.forEach(func,
thisObj); (file:
api/src/main/javascript/META-INF/resources/myfaces/_impl/_util/_Lang.js, line:
346)
this._Lang.arrForEach(this._q, closure, this._space); (file:
api/src/main/javascript/META-INF/resources/myfaces/_impl/_util/_Queue.js, line:
155)
this.each(broadCastFunc); (file:
api/src/main/javascript/META-INF/resources/myfaces/_impl/_util/_ListenerQueue.js,
line: 80)
this._evtListeners.broadcastEvent(eventData); (file:
api/src/main/javascript/META-INF/resources/myfaces/_impl/core/Impl.js, line:
564)
....
I noticed that in
api/src/main/javascript/META-INF/resources/myfaces/_impl/_util/_LangQuirks.js
there's a version of 'arrForEach' function that iterates over elements using a
plain 'for' loop. Unfortunately this version of the method is not loaded
because of the condition at the top of the file is not fulfilled. I attached a
patch that we used to get things going. Of course you might have a better
solution to this issue.
Here's also the original JIRA case: http://jira.icesoft.org/browse/ICE-7899
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