将标签添加到条形图: chartjs

var ctx = document.getElementById('myChart').getContext('2d');
var myChart = new Chart(ctx, {
    type: 'bar',
    data: {
        labels: ['标签1', '标签2', '标签3', '标签4'],
        datasets: [{
            label: '数据集1',
            data: [10, 20, 30, 40],
            backgroundColor: 'rgba(0, 123, 255, 0.5)'
        }]
    },
    options: {
        // 配置项
    }
});

options: {
    scales: {
        y: {
            beginAtZero: true
        }
    },
    plugins: {
        legend: {
            display: false // 隐藏图例
        },
        tooltip: {
            callbacks: {
                label: function(context) {
                    var label = context.dataset.label || '';
                    if (label) {
                        label += ': ';
                    }
                    label += context.parsed.y;
                    return label;
                }
            }
        }
    }
}

<canvas id="myChart"></canvas>