table表格操作列,按钮过多时展开点击失效问题

//将以下代码粘入相关页面中 
$(document).off('mousedown','.layui-table-grid-down').
    on('mousedown','.layui-table-grid-down',function (event) {
        table._tableTrCurrr = $(this).closest('td');
    });
 $(document).off('click','.layui-table-tips-main [lay-event]').
    on('click','.layui-table-tips-main [lay-event]',function (event) {
        var elem = $(this);
        var tableTrCurrr =  table._tableTrCurrr;
        if(!tableTrCurrr){
            return;
        }
        var layerIndex = elem.closest('.layui-table-tips').attr('times');
        console.log(layerIndex);
        layer.close(layerIndex);
        table._tableTrCurrr.find('[lay-event="' + elem.attr('lay-event') +           '"]').children("i").first().click();
 });
 
 
//############################按钮监听方法###########################################
 
//监听按钮事件方法 注意tool(test)中的test应和table中lay-filter对应
table.on('tool(test)',function(obj){
    var d = obj.data;
    if(obj.event === ''){//event对应按钮中的lay-event
              //业务操作
    }