Load same data on multiple Combo

How to simplify load same data on multiple Combo, for example :

var cbUnitHead1 = myForm.getCombo("cbUnitHead1");
var cbUnitHead2 = myForm.getCombo("cbUnitHead2");
var cbUnitHead3 = myForm.getCombo("cbUnitHead3");

cbUnitHead1.load("employee/combo");
cbUnitHead2.load("employee/combo");
cbUnitHead3.load("employee/combo");

I need simplify, like this :

var cbUnitHead1 = myForm.getCombo("cbUnitHead1");
var cbUnitHead2 = myForm.getCombo("cbUnitHead2");
var cbUnitHead3 = myForm.getCombo("cbUnitHead3");

var data = load("employee/combo");

cbUnitHead1.load(data);
cbUnitHead2.load(data);
cbUnitHead3.load(data);

so, I only run query on database 1 time, more faster…
Is this possible? thanks

You may try to use the dhx.ajax functionality:
docs.dhtmlx.com/api__dhtmlxajax_get.html

So you will have something like:

window.dhx.ajax.get(“server.php”, function®{
var data = window.dhx.s2j(r.xmlDoc.responseText); // convert response to json object
cbUnitHead1.load(data);
cbUnitHead2.load(data);
cbUnitHead3.load(data);
});