This is a good question, and an enhancement to be addressed...

HCL Notes/Domino 8.5 Forum (includes Notes Traveler)

Subject:

Sometime in the future (not saying when) you'll be able to have an edit box and be able to assign a hidden tag. Right now we don't have that in there.

But here's how you can get around it.

On the 'afterPageLoad' event for the XPage put the following...
getComponent('inputText1').rendererType = 'javax.faces.Hidden'
...with 'inputText1' being the edit box name you wish to be hidden.

This will hide the value at runtime.

Here's an example in full...

<xp:this.afterPageLoad>
<![CDATA[#{javascript:getComponent('inputText1').rendererType = 'javax.faces.Hidden'}]]>
</xp:this.afterPageLoad>
<xp:inputText id="inputText1" value="#{requestScope.val01}"
defaultValue="#{javascript:@Unique()}">
</xp:inputText>
<xp:br></xp:br>
<xp:button value="Submit" id="button1">
<xp:eventHandler event="onclick" submit="true"
refreshMode="complete" immediate="false" save="true"></xp:eventHandler>
</xp:button>
<xp:br></xp:br>
<xp:text escape="true" id="computedField1" value="#{requestScope.val01}"
style="color:rgb(128,0,255);font-weight:bold"></xp:text>

Feedback response number PHAN7PLD4V created by ~George Fronusteretsi on 02/25/2009