How to use highcharts correctly in angular

npm install highcharts-ng --save

'highcharts/highcharts.src.js',
'highcharts-ng/dist/highcharts-ng.min.js'

var myapp = angular.module('myapp', ["highcharts-ng"]);

// html
<highchart class="chart" config="chartConfig" class="span9" ></highchart>

// js
$scope.chartConfig = {
 title: {
   text: &#39;哈哈哈&#39;,
   x: -20
 },
 subtitle: {
  text: &#39;Click and drag to zoom in.&#39;,
  x: -20
 },
 xAxis: {
  categories: [&#39;一月&#39;, &#39;二月&#39;, &#39;三月&#39;, &#39;四月&#39;, &#39;五月&#39;, &#39;六月&#39;, &#39;七月&#39;, &#39;八月&#39;, &#39;九月&#39;, &#39;十月&#39;, &#39;十一月&#39;, &#39;十二月&#39;]
 },
 yAxis: {
  title: {
   text: &#39;温度 (°C)&#39;
  },
  plotLines: [{
   value: 0,
   width: 1,
   color: &#39;#808080&#39;
  }]
 },
 tooltip: {
  valueSuffix: &#39;°C&#39;
 },
 legend: {
  layout: &#39;vertical&#39;,
  align: &#39;right&#39;,
  verticalAlign: &#39;middle&#39;,
  borderWidth: 0
 },
 series: [{
  name: &#39;东京&#39;,
  data: [7.0, 6.9, 9.5, 14.5, 18.2, 21.5, 25.2, 26.5, 23.3, 18.3, 13.9, 9.6]
 }, {
  name: &#39;纽约&#39;,
  data: [-0.2, 0.8, 5.7, 11.3, 17.0, 22.0, 24.8, 24.1, 20.1, 14.1, 8.6, 2.5]
 }, {
  name: &#39;柏林&#39;,
  data: [-0.9, 0.6, 3.5, 8.4, 13.5, 17.0, 18.6, 17.9, 14.3, 9.0, 3.9, 1.0]
 }, {
  name: &#39;伦敦&#39;,
  data: [3.9, 4.2, 5.7, 8.5, 11.9, 15.2, 17.0, 16.6, 14.2, 10.3, 6.6, 4.8]
 }]
};