title: Apache Echarts - Use webfont on axis name
body: <p>I'm trying to use a custom font when settings axis name(like on highcharts <a href="https://www.highcharts.com/forum/viewtopic.php?t=42108" rel="nofollow noreferrer">https://www.highcharts.com/forum/viewtopic.php?t=42108</a>), for example fontawesome, so i can have something like this:</p>
  
  <pre><code>option = {
      yAxis: {
          type: 'value',
          name: 'test' + String.fromCharCode(0xf111),
          nameTextStyle: {
              fontFamily: 'FontAwesome'
          }
      },
      series: [{
          data: [820, 932, 901, 934, 1290, 1330, 1320],
          type: 'line'
      }]
  };
  </code></pre>
  
  <p>The YAxis name should be like 'test⏺', but unfortunately the font is not used and i get an unknown character.
  <a href="https://i.stack.imgur.com/bMz2B.png" rel="nofollow noreferrer">=> here</a></p>
  
  <p>Do you have any idea how can this be done?</p>
  
  <p>Thanks ^_^ </p>