ComboBox onBlur to refresh the values of other ComboBoxes using a function - xpages

Question

I have an xpage with 5 fields on it. Each field has code in the onBlur event to refresh the values of the ComboBoxes below it. I now have to add a bunch more fields to this application and I don't want to write the refresh code for each field. Rather, I would like to create a function that takes a parameter of which field I'm in and do the refresh with a loop.
I can't seem to get this to work. Below is the code I'm using in the onBlur event. I don't know the semantics of putting this code in a script library that can access each combobox and call the refresh code in a loop.
Any ideas?
<xp:comboBox id="vendorAppAdvSkills1">
<xp:selectItem itemLabel="-Select a Category-"
itemValue="-Select a Category-"></xp:selectItem>
<xp:selectItems>
<xp:this.value><![CDATA[#{javascript:getComponent( "vendorAppSkills1" ).getValue();}]]></xp:this.value>
</xp:selectItems>
<xp:eventHandler event="onblur" submit="false">
<xp:this.script><![CDATA[
XSP.partialRefreshPost("#{id:panelVendorAppSkills2}",
{
onComplete: function()
{
XSP.partialRefreshPost("#{id:panelVendorAppSkills3}",
{
onComplete: function()
{
XSP.partialRefreshPost("#{id:panelVendorAppSkills4}",
{
onComplete: function()
{
XSP.partialRefreshPost("#{id:panelVendorAppSkills5}",
{
onComplete: function()
{
XSP.partialRefreshPost("#{id:panelNextFinish}",
{
} )
}
} )
}
} )
}
} )
}
} );]]></xp:this.script>
</xp:eventHandler>
</xp:comboBox>

Answer 1

Do you have validation on your XPage? If so, validation will be preventing any of the partial refreshes running.
If possible just set the refresh ID of the eventHandler to an area that encompasses all combo boxes. That would just call one partial refresh from the browser to the server.
With your current code you're calling 5 partial refreshes, each time posting the whole content of the browser across to the server, each time updating the whole page, but just pushing back an individual component. Performance is not going to be good, so the single refresh area is better practice (as well as being easier to code!).
As best practice, unless you're preventing validation, also ensure the refresh area includes a Display Errors control. Otherwise your users (including you when testing) will not know if validation has failed.