How to Check Chart Type on Chart.js?

8 minutes read

To check the chart type on chart.js, you can access the chart object and check the 'config.type' property. This property will specify the type of chart being used, such as 'bar', 'line', 'pie', etc. You can use this information to determine the type of chart currently being displayed on the canvas. Additionally, you can also look at the documentation of chart.js for more information on how to access and manipulate chart properties.

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How to tell if a chart is a pie chart or bar chart in chart.js?

In Chart.js, you can determine if a chart is a pie chart or a bar chart by checking the type property of the chart configuration object. The type property specifies the type of chart to be displayed.


For example, if you have a chart configuration object like this:

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var chartConfig = {
  type: 'bar',
  data: {
    labels: ['A', 'B', 'C'],
    datasets: [{
      label: 'Dataset',
      data: [10, 20, 30]
    }]
  }
};


You can determine if it is a bar chart by checking the type property like this:

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if (chartConfig.type === 'bar') {
  console.log('This is a bar chart');
} else {
  console.log('This is not a bar chart');
}


Similarly, you can check if the chart is a pie chart by checking the type property like this:

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if (chartConfig.type === 'pie') {
  console.log('This is a pie chart');
} else {
  console.log('This is not a pie chart');
}


By checking the type property in the configuration object, you can easily determine if a chart is a pie chart or a bar chart in Chart.js.


What code snippet can I use to determine the chart type in chart.js?

You can determine the chart type in Chart.js by accessing the config.type property of the chart object. Here is a code snippet that demonstrates how to determine the chart type:

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var ctx = document.getElementById('myChart').getContext('2d');
var myChart = new Chart(ctx, {
    type: 'bar',
    data: {
        labels: ['Red', 'Blue', 'Yellow', 'Green', 'Purple', 'Orange'],
        datasets: [{
            label: '# of Votes',
            data: [12, 19, 3, 5, 2, 3],
            backgroundColor: [
                'rgba(255, 99, 132, 0.2)',
                'rgba(54, 162, 235, 0.2)',
                'rgba(255, 206, 86, 0.2)',
                'rgba(75, 192, 192, 0.2)',
                'rgba(153, 102, 255, 0.2)',
                'rgba(255, 159, 64, 0.2)'
            ],
            borderColor: [
                'rgba(255, 99, 132, 1)',
                'rgba(54, 162, 235, 1)',
                'rgba(255, 206, 86, 1)',
                'rgba(75, 192, 192, 1)',
                'rgba(153, 102, 255, 1)',
                'rgba(255, 159, 64, 1)'
            ],
            borderWidth: 1
        }]
    },
    options: {
        scales: {
            y: {
                beginAtZero: true
            }
        }
    }
});

// Determine the chart type
var chartType = myChart.config.type;
console.log("Chart Type: ", chartType);


In this code snippet, we create a new bar chart using Chart.js and then access the config.type property of the myChart object to determine the chart type. This property will return the type of the chart, in this case, 'bar'. You can use this method to determine the chart type for any type of chart created using Chart.js.


What is the function to determine the chart type in chart.js?

The function to determine the chart type in Chart.js is getChartType(). This function can be called on a Chart.js instance to retrieve the type of chart being used.


What is the library function to determine the chart type in chart.js?

The library function to determine the chart type in chart.js is getDatasetMeta(index).type.

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