layui下拉多选框xm-select.js插件的使用

 <div id="selected_box" class="layui-input-inline xm-select-demo" style="width:150px;"><input type="hidden" id="poi_category_id"></div>

  //获取分类;
        $.ajax({
            type: 'get',
            url: "./api/api.php?act=getCategory&token=3cab7ce4142608c0f40c785b5ab5ca24",
            data: {},
            dataType: "json",
            success: function (res) {
                var data = [];
                for (var i = 0; i < res.data.length; i++) {
                    data.push({name: res.data[i].category_name, value: res.data[i].category_id});
                }
        xmSelect.render({
                    el: '#selected_box',
                    theme: {
                        color: 'rgba(255, 87, 34,0.8)',
                    },
                    language: 'zn',
                    filterable:true,
                    data: data,
                    on: function(data){
                        var selectArr = data.arr;
                        var seachArr = [];
                        for (var j = 0; j < selectArr.length; j++) {
                            seachArr.push(selectArr[j].value)
                        }
                        $("#poi_category_id").val(seachArr.toString());
                    }
                })
            },
            error: function (err) {
                console.log(err)
            }
        });

$("#poi_category_id").val(seachArr.toString());