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
//……
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