How to implement BarChart in ReactJS ?

In our React app sometimes we want to display a BarChart representation of a particular data. We can use react-chartjs-2 and chart.js module in ReactJS to display information in BarCharts format. Following are some simple steps to do so:

Step 1: Create a React application using the following command.

npx create-react-app BARCHART_REACT

Step 2: After creating your project folder i.e. BARCHART_REACT, move to it using the following command.

cd BARCHART_REACT

Step 3: After creating the ReactJS application, Install react-chartjs-2 and chart.js modules using the following command.

npm install --save react-chartjs-2 chart.js

Project structure:

Example: Now write down the following code in the App.js file. Here, App is our default component where we have written our code.

App.js

import { Bar } from "react-chartjs-2";

function App() {
  return (
    <div className="App">
      <h1>GEEKSFORGEEKS BAR CHART REACTJS</h1>
      <div style={{ maxWidth: "650px" }}>
        <Bar
          data={{
            // Name of the variables on x-axies for each bar
            labels: ["1st bar", "2nd bar", "3rd bar", "4th bar"],
            datasets: [
              {
                // Label for bars
                label: "total count/value",
                // Data or value of your each variable
                data: [1552, 1319, 613, 1400],
                // Color of each bar
                backgroundColor: ["aqua", "green", "red", "yellow"],
                // Border color of each bar
                borderColor: ["aqua", "green", "red", "yellow"],
                borderWidth: 0.5,
              },
            ],
          }}
          // Height of graph
          height={400}
          options={{
            maintainAspectRatio: false,
            scales: {
              yAxes: [
                {
                  ticks: {
                    // The y-axis value will start from zero
                    beginAtZero: true,
                  },
                },
              ],
            },
            legend: {
              labels: {
                fontSize: 15,
              },
            },
          }}
        />
      </div>
    </div>
  );
}

export default App;

Step to Run Application: Run the application using the following command from the root directory of the project:

npm start

Output: Now open your browser and go to http://localhost:3000/, you will see the following output: