javascript - 图表 js 不显示图表

Question

我尝试在我从事的项目中仅显示图表 js 中的示例。不幸的是我被迫使用 Chart Js 1.x。 我试图实现 https://github.com/chartjs/Chart.js/blob/master/samples/bar/bar.html 中的条形示例 我想这是一个非常简单的例子，但它没有运行:(

<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/1.1.1/Chart.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<canvas id="zeitsteuerungChart"></canvas>

var barChartData = {
        labels: ["January", "February", "March", "April", "May", "June", "July"],
        datasets: [{
            label: 'Dataset 1',
            borderWidth: 1,
            data: [
                "1","1","1","1","1","1","1"
            ]
        }, {
            label: 'Dataset 2',
            borderWidth: 1,
            data: [
                "1","1","1","1","1","1","1"
            ]
        }]
    };
    window.onload = function() {
        var ctx = document.getElementById("zeitsteuerungChart").getContext("2d");
        var myBar = new Chart(ctx, {
            type: 'bar',
            data: barChartData
        });
    };

图表JS操纵

<canvas id="zeitsteuerungChart"></canvas>

元素到

<canvas id="zeitsteuerungChart" width="300" height="150" style="width: 300px; height: 150px;"></canvas>

但仅此而已。没有图表显示。控制台中没有错误。我也尝试使用 jQuery 来选择 Canvas

var ctx = $("#zeitsteuerungChart").get(0).getContext("2d");

但效果一样!在项目的其他子页面上，它工作得很好!

Answer 1

您在 v1 上使用图表 js v2 语法。

对于 v1

var barChartData = {
  labels: ["January", "February", "March", "April", "May", "June", "July"],
  datasets: [{
    label: 'Dataset 1',
    borderWidth: 1,
    data: ["1","1","1","1","1","1","1"]
  },
  {
    label: 'Dataset 2',
    borderWidth: 1,
    data: ["1","1","1","1","1","1","1"]
  }]
};

window.onload = function() {
  var ctx = document.getElementById("zeitsteuerungChart").getContext("2d");
  var myBar = new Chart(ctx).Bar(barChartData, options);
};

您可以查看图表选项(图表 js v1)here或 complete options here