1var myChart = new Chart(ctx, {
2    type: 'bar',
3    data: chartData,
4    options: {
5        scales: {
6            xAxes: [{
7                ticks: {
8                    autoSkip: false,
9                    maxRotation: 90,
10                    minRotation: 90
11                }
12            }]
13        }
14    }
15});