Question

我有一个程序，当您在文本框中输入值时，它将显示高图表中的百分比。这是我的代码

<!DOCTYPE html>


<head>
   <script src="https://code.jquery.com/jquery-2.1.3.js" type="text/javascript"></script>
   <script src="http://code.highcharts.com/highcharts.js" type="text/javascript"></script>
   <script src="http://code.highcharts.com/modules/exporting.js" type="text/javascript"></script>
</head>

<body>
  <div id="container" style="min-width: 310px; height: 400px; max-width: 600px; margin: 0 auto"></div>
  <br>Number of Arson:
  <input type="text" id="arson" name="arson">
  <br>Number of Homicide:
  <input type="text" id="homicide" name="homicide">
  <br>Number of Physical Injuries:
  <input type="text" id="physicalinjuries" name="physicalinjuries">
  <br>Number of Carnapping:
  <input type="text" id="carnapping" name="carnapping">
  <br>Number of Ethical Law Violation:
  <input type="text" id="elv" name="elv">
  <br>
  <input type="submit" id="chart" value="Submit">
  <script>
$(document).ready(function() {
      ('#container').highcharts({
        chart: {
          plotBackgroundColor: null,
          plotBorderWidth: 1, //null,
          plotShadow: false
        },
        title: {
          text: 'Crimes for this Year'
        },
        tooltip: {
          pointFormat: '{series.name}: <b>{point.percentage:.1f}%</b>'
        },
        plotOptions: {
          pie: {
            allowPointSelect: true,
            cursor: 'pointer',
            dataLabels: {
              enabled: true,
              format: '<b>{point.name}</b>: {point.percentage:.1f} %',
              style: {
                color: (Highcharts.theme && Highcharts.theme.contrastTextColor) || 'black'
              }
            }
          }
        },
        series: [{
          type: 'pie',
          name: 'Browser share',
          data: [
            ['Arson', 0],
            ['Homicide', 0],
            ['Physical Injuries', 0],
            ['Carnapping', 0],
            ['Ethical Law Violation', 0]

          ]
        }]
      });


    $('#chart').on('click', function() {

      var myChart = $('#container').highcharts();

      var wrongValue = false;

      function setValue(type, slot) {
        var value = Number($('#' + type).val());
        if (isNaN(value) || value === undefined) {
          wrongValue = true;
          value = 0;
        }
        myChart.series[0].data[slot].update(value);
      }

      setValue('arson', 0);
      setValue('homicide', 1);
      setValue('physicalinjuries', 2);
      setValue('carnapping', 3);
      setValue('elv', 4);

      if (wrongValue) {
        // warn the user.
      }

    });
 });
  </script>
</body>

</html>

然后我将其保存为chart.html，但是当我使用谷歌浏览器运行它时，图表没有显示，我得到了Uncaught ReferenceError的错误：$未定义我的代码有什么问题？

图表未显示和错误未捕获的ReferenceError：$未定义

0 个答案: