Как обновить данные в chart js?

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var myChart = new Chart(ctx, {...});

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myChart.data.datasets[0].data = [newData1, newData2, ...];

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myChart.update();

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var ctx = document.getElementById('myChart').getContext('2d');
var myChart = new Chart(ctx, {
  type: 'line',
  data: {
    labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
    datasets: [{
      label: 'My First dataset',
      data: [65, 59, 80, 81, 56, 55, 40]
    }]
  }
});

// Update the data
myChart.data.datasets[0].data = [10, 20, 30, 40, 50, 60, 70];
myChart.update();