判断为空

var hrOrgUnitF7Value = self.getField("hrOrgUnit").shrPromptBox("getValue");
if (!hrOrgUnitF7Value || hrOrgUnitF7Value.id == "") {
shr.showError({
message: jsBizMultLan.emp_shrAffairBillBaseHrManEdit_i18n_8,
hideAfter: 6
});
return false;
}