VTable usage issue: How to add column total information to the list

Question title

How to add column total information to the list

Problem description

In the list, you hope to display the total information of a column, such as sum, average, etc.

Solution

VTable provides aggregationconfiguration for configuring data aggregation rules and display positions in the table. You can configure aggregationto specify global rules for aggregation in options, or configure aggregationto specify aggregation rules for each column. The following properties need to be configured in aggregation:

• aggregationType:

  • Sum, set aggregationTypeto AggregationType. SUM
  • Average, set aggregationTypeto AggregationType. AVG
  • Maximum value, set aggregationTypeto AggregationType. MAX
  • Minimum, set aggregationTypeto AggregationType. MIN
  • Count, set aggregationTypeto AggregationType. COUNT
  • Custom function, set aggregationTypeto AggregationType. CUSTOM, set custom aggregation logic through aggregationFun

• aggregationFun: Custom aggregation logic when aggregationType is AggregationType. CUSTOM

• showOnTop: Controls the display position of the aggregated results. The default is false, which means the aggregated results are displayed at the bottom of the body. If set to true, the aggregated results are displayed at the top of the body.

• FormatFun: Set the formatting function of aggregate values, and customize the display format of aggregate values.

Code example

const options = {
    //......
    columns: [
      {
        aggregation: [
          {
            aggregationType: VTable.TYPES.AggregationType.MAX,
            // showOnTop: true,
            formatFun(value) {
              return '最高薪资:' + Math.round(value) + '元';
            }
          }
        ]
      },
      // ......
    ]
};

Results show

Example code: https://www.visactor.io/vtable/demo/list-table-data-analysis/list-table-aggregation-multiple

Related Documents

Basic Table Data Analysis Tutorial: https://www.visactor.io/vtable/guide/data_analysis/list_table_dataAnalysis

Related api: https://www.visactor.io/vtable/option/ListTable#aggregation

github：https://github.com/VisActor/VTable