var lookupData = new Array(); // Create an object to add to the array. var lookupItem= new Object(); // Set the id, typename, and name properties to the object. lookupItem.typename = 'transactioncurrency'; lookupItem.name ="人民币" // Add the object to the array. lookupData[0] = lookupItem; // Set the value of the lookup field to the value of the array. crmForm.all.transactioncurrencyid.DataValue = lookupData;