如何在chart.js图表​​中添加轴标题

Question

有没有办法在chart.js图表​​上添加x和y轴标题？我在文档中找不到轴标题的特定选项...

提前致谢！

Answer 1

<强>更新

Y-title：见this SO answer
X-title：见this other answer

原始回复

来自documentation：

var myLineChart = new Chart(ctx).Line(data, options);

var data = {
    labels: ["January", "February", "March", "April", "May", "June", "July"],
    datasets: [
        {
            label: "My First dataset",
            fillColor: "rgba(220,220,220,0.2)",
            strokeColor: "rgba(220,220,220,1)",
            pointColor: "rgba(220,220,220,1)",
            pointStrokeColor: "#fff",
            pointHighlightFill: "#fff",
            pointHighlightStroke: "rgba(220,220,220,1)",
            data: [65, 59, 80, 81, 56, 55, 40]
        },
        {
            label: "My Second dataset",
            fillColor: "rgba(151,187,205,0.2)",
            strokeColor: "rgba(151,187,205,1)",
            pointColor: "rgba(151,187,205,1)",
            pointStrokeColor: "#fff",
            pointHighlightFill: "#fff",
            pointHighlightStroke: "rgba(151,187,205,1)",
            data: [28, 48, 40, 19, 86, 27, 90]
        }
    ]
};

labels = x轴标签

对于Y轴，使用little SO search：

var options = {   
    scaleLabel: function (valuePayload) {
        // Do something with valuePayload.value
        return valuePayload.value;
    }
};

var myLineChart = new Chart(ctx).Line(data, options);