Chart.js V2.1.4确实有效，骨干视图

Question

我想使用带有Backbone View的Chart.js v2.1.4的升级版本（与v1.0.2一起正常运行），因为它有额外的功能。但它不能与升级版本v 2.1.4一起使用。

代码段是：

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define([
   'underscore', 
   'jquery',   
   'backbone',
   'Chart',
   'text!templates/dashboard/graph-view-template.html'
], function(_, $, Backbone, Chart, GraphViewTemplate) {

    var GraphView = Backbone.View.extend({
      template: GraphViewTemplate,
      events: {
      },

      elements: {
      },

      initialize: function(options){
        this.options = options;
      },

      render: function(){
        this.$el.html(this.template);
        this.renderTempGraph();
        return this;
      },

      renderTempGraph: function(){
        var ctx = this.$el.find("#myChart").get(0).getContext("2d");
        var myChart = new Chart(ctx, {
            type: 'bar',
            data: {
                labels: ["Red", "Blue", "Yellow"],
                datasets: [{
                    label: '# of Votes',
                    data: [12, 19, 3],
                    backgroundColor: [
                        'rgba(255, 99, 132, 0.2)',
                        'rgba(54, 162, 235, 0.2)',
                        'rgba(255, 159, 64, 0.2)'
                    ],
                    borderColor: [
                        'rgba(255,99,132,1)',
                        'rgba(54, 162, 235, 1)',
                        'rgba(255, 159, 64, 1)'
                    ],
                    borderWidth: 1
                }]
            },
            options: {
                scales: {
                    yAxes: [{
                        ticks: {
                            beginAtZero:true
                        }
                    }]
                }
            }
        });
      }
  return GraphView;
});

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<canvas id="myChart" width="400" height="400"></canvas>

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渲染后，canvas元素属性看起来像

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<iframe class="chartjs-hidden-iframe" style="width: 100%; display: block; border: 0px; height: 0px; margin: 0px; position: absolute; left: 0px; right: 0px; top: 0px; bottom: 0px;">
</iframe>

<canvas id="myChart" width="0" height="0" style="width: 0px; height: 0px;"></canvas>

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