[TYPO3-core] RFC #14577

[JoH asenau]

This is an SVN patch request.

Type: Bugfix

Branches: trunk, 4.3

Bugtracker reference:
http://bugs.typo3.org/view.php?id=14577

Problem: Ext.ux.elasticTextArea causes JS errors in all version of IE due to
a value "NaN" returned as the element height.

Reason: inside the function there is a check for growBy and
this.div.getHeight, which might of course be "Not a Number", when they are
not available at all - in all these cases the IE engine can't do the math
with this value thus "NaN" would be returned as a value instead of the the
desired number.

Solution: Check if there is a value at all - if not: don't use it

Patch against current trunk is attached. Should apply to 4.3 as well.

Cheers

Joey

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