layui table筛选列实现记忆功能，刷新不丢失

table.render({
  elem: '#test'
  ,url: 'json/table/demo1.json'
  ,toolbar: 'default'
  ,cols: [function(){
    var arr = [
      {type: 'checkbox', fixed: 'left'}
      ,{field:'id', title:'ID', width:80, fixed: 'left'}
      ,{field:'username', title:'用户名', width:120}
      ,{field:'ip', title:'IP', width: 120}
      ,{fixed: 'right', title:'操作', toolbar: '#barDemo', width:150}
    ];
    
    //初始化筛选状态
    var local = layui.data ('table-filter-test');
    layui.each(arr, function(index, item){
      if(item.field in local){
        item.hide = true;  // 在本地标识中则隐藏
      }
    });
    return arr;
  }() ]  
  ,done: function(){
    //记录筛选状态
    var that = this;
    that.elem.next().on('mousedown', 'input[lay-filter="LAY_TABLE_TOOL_COLS"]+', function(){
      var input = $(this).prev()[0];
      var input = $(this).prev()[0];
            if (input.checked === true){  // 复选框取消，则加入本地缓存标识
                layui.data ('table-filter-lock', {key: input.name,value: !input.checked})
            }else {  // 复选框勾上，则移除本地标识
                layui.data('table-filter-lock', {key: input.name, remove: true});
            }
    });
  }
});
​