Fastadmin custom popup using selectpage

Index.html

<a href="javascript:;" class="btn btn-info btn-reset-task" title="{:__('Reset_task')}" ><i class="fa fa-repeat"></i> {:__('Reset_task')}</a>

JS

$(".btn-reset-task").on("click", function() {
    var that = this;
    layer.open({
        type: 1
        ,area:["350px","200px"]
        ,btn:["确定","取消"]
        ,title: '重置任务'
        ,skin: 'layui-layer-prompt'
        ,content: "<div id='reset-task-div'><input id=\"c-taskids\" data-rule=\"required\" data-source=\"a/b/c\" data-multiple='true' class=\"form-control selectpage\" name=\"row[taskids]\" type=\"text\" value=\"\"></div>"
        ,yes: function(index, layero){
            var task_ids = $(layero).find("#c-taskids").val();
            Backend.api.ajax({
                url: "a/b/set_reset_task?task_ids=" + task_ids,
            },function () {
                $(".btn-refresh").trigger("click");
                Layer.close(index);
            });
        },success: function() {
            Form.api.bindevent($("#reset-task-div"));
        }
    });
});