Example
require(["N/search", "N/currentRecord"], function (s, cr) {
/**
* An example of N/search#lookupFields to retrieve a single field from a related record
*/
(function () {
var record = cr.get();
// Get the Sales Rep record ID
var repId = record.getValue({
"fieldId": "salesrep"
});
// Get the name of the Sales Rep
var repName = record.getText({
"fieldId": "salesrep"
});
// Retrieve the email address from the associated Sales Rep
var repData = s.lookupFields({
"type": "employee",
"id": repId,
"columns": ["email"]
});
console.log(repData);
console.log(repName + "'s email address is " + repData.email);
})();
});