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https://issues.apache.org/jira/browse/XAP-280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12467992
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Turyn, Michael commented on XAP-280:
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Oh, and
<blockquote>"Even when there is no onKeyDown listener on the node.
"</blockquote>
----that's because the writeBack occurs for every key down, listener present or
not---it's the only way to make absolutely sure that the HTML DOM element (a
text node) stays in synch with the XAL DOM elementt's "text" attribute.
> Widgets: TextArea: Non-existent function error when typing in textArea
> ----------------------------------------------------------------------
>
> Key: XAP-280
> URL: https://issues.apache.org/jira/browse/XAP-280
> Project: XAP
> Issue Type: Bug
> Components: Widgets
> Reporter: Trevor Oldak
> Priority: Critical
>
> I've only seen this error in the textArea component test
> Open the textArea component test and type in the text area. Every time you
> press a key, this error will be thrown:
> xap.xml.dom.Document.createTextNode is not a function
> Even when there is no onKeyDown listener on the node.
> The error comes from the last line in this block of code from xapcore.js
> xap.taghandling.AbstractTagImpl.prototype.writeBackTextNode=function(_4f9){
> var _4fa=this.getElement();
> _4fa.removeStructureChangeListener(this);
> var _4fb=_4fa.firstChild;
> if(!_4fb){
> _4fa.appendChild(xap.xml.dom.Document.createTextNode(_4f9));
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