Hello,
I leave code to implement Placeholder in XPages for Domino version 8.5.2.
Put following code in you xpage.
<xp:scriptBlock>
<xp:this.value><![CDATA[XSP.addOnLoad(function(){
dojo.query('[id$="txtSearch"]').forEach(function(eachInput){
dojo.attr(eachInput, "placeholder", "Search for...");
});
});]]></xp:this.value>
</xp:scriptBlock>
And change id$="YourFieldID" and ready.
The result is:
Any questions please leave your comments.