Events

Listen to Chart Events

react-google-charts also supports event listeners, enabling you to trigger callbacks when chart interactions occur. For example, you can log the selected chart items on a ScatterChart using the select event.

import { Chart } from "react-google-charts";

const chartEvents = [
  {
    eventName: "select",
    callback({ chartWrapper }) {
      console.log("Selected ", chartWrapper.getChart().getSelection());
    },
  },
  {
    eventName: "ready",
    callback({ chartWrapper }) {
      console.log("Chart ready. ", chartWrapper.getChart());
    },
  },
  {
    eventName: "error",
    callback(args) {
      console.log("Chart errored. ", args);
    },
  },
];

const data = [
  ["age", "weight"],
  [8, 12],
  [4, 5.5],
  [11, 14],
  [4, 5],
  [3, 3.5],
  [6.5, 7],
];

const options = {
  title: "Age vs. Weight Comparison",
  hAxis: { title: "Age", viewWindow: { min: 0, max: 15 } },
  vAxis: { title: "Weight", viewWindow: { min: 0, max: 15 } },
  legend: "none",
};

<Chart
  chartType="ScatterChart"
  data={data}
  options={options}
  chartEvents={chartEvents}
/>;

Event Highlights

• eventName: Specifies the event to listen for (e.g., "select" | "error" | "ready").
• callback: The function that gets triggered when the event occurs, providing access to the chart instance and event data.

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Simple Example