            { type: 'radio' },
                    { field: 'id', title: 'ID' },
                    { field: 'username', title: '姓名' },
                    { field: 'sex', title: '性别' }
                ]]
            },
            done: function (elem, data) {
                var NEWJSON = []
                layui.each(data.data, function (index, item) {
                    NEWJSON.push(item.username)
                })
                elem.val(NEWJSON.join(","))
            }
        })

    });
