Attached test case that shows this behavior. The icefaces-*.jar files need to be added into the war file.

Steps:

• Load test.jsf
• Click the Hide button
• Click the Show button
• Looking at the rendered source, the script tag that should be rendered in the body-> scriptPnl div tag is no longer there.

Reviewing the updates the script tag is included but not rendered.

Note: for this instance a workaround is to surround the section that is being hidden/shown in a div but this isn't a solution for the customers app.

During a partial update Mojarra (or Myfaces) will strip out all the script tags found in the update. Once collected the script code is evaluated using eval function but only after the DOM was modified by the update's markup (which does not contain the script tags anymore). The reason for this procedure is to normalize the behaviour of the the browsers since some will evaluate natively the script tags inserted into the DOM and some will not.

When running the provided test case it can be verified (using browser's JS console) that after clicking the Show button the function defined in the script tag openAlertWindow was indeed evaluated.