Title

Can the column series listen for event callbacks?

Description

When using VChart bar chart in Mini Program, is there an event that can be called back when selecting a bar in the bar chart?

Solution

In vchart, you can obtain the meta information of the current click by listening to pointerdown events; in addition, you can also obtain events on different elements through event filtering.

Code Example

const spec = {
  type: 'bar',
  data: [
    {
      id: 'barData',
      values: [
        { month: 'Monday', sales: 22 },
        { month: 'Tuesday', sales: 13 },
        { month: 'Wednesday', sales: 25 },
        { month: 'Thursday', sales: 29 },
        { month: 'Friday', sales: 38 }
      ]
    }
  ],
  xField: 'month',
  yField: 'sales'
};

const vchart = new VChart(spec, { dom: CONTAINER_ID });
vchart.renderSync();
vchart.on('pointerdown', { level: 'mark' }, (...params) => console.log(params))

// Just for the convenience of console debugging, DO NOT COPY!
window['vchart'] = vchart;</br>

Results

Online demo：https://codesandbox.io/p/sandbox/bar-event-listener-dt8pjg?file=%2Fsrc%2Findex.ts%3A26%2C5

Related Documentation

Event Toturial：https://www.visactor.io/vchart/guide/tutorial_docs/Event
Related Api：https://www.visactor.io/vchart/api/API/event
github：https://github.com/VisActor/VChart