You can add it with some Custom JS. This example highlights the matched items.
Add this to your Custom JS
function highlightMatches(elm, fin) {
var sVal = jQuery(elm).val(), container = jQuery("#vLookup_" + fin + "_" + spjs.dffs.data.thisItemID).find(".vLookupTable");
jQuery(".highlightSearchMatchInvLookup").removeClass("highlightSearchMatchInvLookup");
if (sVal !== "") {
container.find("tr").each(function (i, tr) {
if (jQuery(tr).text().match(sVal) !== null) {
jQuery(tr).addClass("highlightSearchMatchInvLookup");
}
});
}
}
Then add this to the Custom CSS
.highlightSearchMatchInvLookup{
background-color:yellow;
}
Then add this to a HTML section above the vLookup field
Change “vLookupTasks” to match your vLookup field name:
<div style="margin-top:3px;">Search for matching items: <input type="text" id="vLookupSearchField" onkeyup="highlightMatches(this,'vLookupTasks')" /></div>
Let me know how it works out.
Alexander