小编Ida*_*lia的帖子

我正在尝试获取stackedBar的所有值的总和,并在工具提示中包含此总数.

注意:我的数据集不是静态的,这是一个例子

var barChartData = {
        labels: ["January", "February", "March", "April", "May", "June", "July"],
        datasets: [{
            label: 'Corporation 1',
            backgroundColor: "rgba(220,220,220,0.5)",
            data: [50, 40, 23, 45, 67, 78, 23]
        }, {
            label: 'Corporation 2',
            backgroundColor: "rgba(151,187,205,0.5)",
            data: [50, 40, 78, 23, 23, 45, 67]
        }, {
            label: 'Corporation 3',
            backgroundColor: "rgba(151,187,205,0.5)",
            data: [50, 67, 78, 23, 40, 23, 55]
        }]

    };

    window.onload = function() {
        var ctx = document.getElementById("canvas").getContext("2d");
        window.myBar = new Chart(ctx, {
            type: 'bar',
            data: barChartData,
            options: { …