Question

你有程序显示LINE＆amp;柱形图。现在我想要的是默认情况下应该显示折线图。我已经实现了这一点。但是点击按钮我希望该图表转换为柱形图。所以我有两个java脚本代码在不同的功能，但我无法在它们之间切换。图表刷新率也是1秒。

这是我的代码。

<html>
  <head>
    <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>  
<script type="text/javascript">
 google.charts.setOnLoadCallback(setInterval);</script>

<script type="text/javascript">
      google.charts.load('current', {'packages':['corechart']});
var i   = 11400;
var j   = 11460;
var k   = 11120;
var l   = 11350;
      setInterval(function drawChart() {
k=k-20;
l=l+5;
        var data = google.visualization.arrayToDataTable([
          ['Year', 'Sales', 'Expenses'],
          ['2004',  1000,      i++],
          ['2005',  1170,      j--],
          ['2006',  660,       k],
          ['2007',  1030,      l]
        ]);

        var options = {
          title: 'Company Performance',
          curveType: 'function',
          legend: { position: 'bottom' }
        };

        var chart = new google.visualization.LineChart(document.getElementById('chart'));

        chart.draw(data, options);
      },1000)
    </script>

<script type="text/javascript">
google.charts.load('current', {packages: ['corechart', 'bar']});
setInterval(function drawMaterial() {
      var data = new google.visualization.DataTable();
      data.addColumn('timeofday', 'Time of Day');
      data.addColumn('number', 'Motivation Level');
      data.addColumn('number', 'Energy Level');

      data.addRows([
        [{v: [8, 0, 0], f: '8 am'}, 1, .25],
        [{v: [9, 0, 0], f: '9 am'}, 2, .5],
        [{v: [10, 0, 0], f:'10 am'}, 3, 1],
        [{v: [11, 0, 0], f: '11 am'}, 4, 2.25],
        [{v: [12, 0, 0], f: '12 pm'}, 5, 2.25],
        [{v: [13, 0, 0], f: '1 pm'}, 6, 3],
        [{v: [14, 0, 0], f: '2 pm'}, 7, 4],
        [{v: [15, 0, 0], f: '3 pm'}, 8, 5.25],
        [{v: [16, 0, 0], f: '4 pm'}, 9, 7.5],
        [{v: [17, 0, 0], f: '5 pm'}, 10, 10],
      ]);

      var options = {
        title: 'Motivation and Energy Level Throughout the Day',
        hAxis: {
          title: 'Time of Day',
          format: 'h:mm a',
          viewWindow: {
            min: [7, 30, 0],
            max: [17, 30, 0]
          }
        },
        vAxis: {
          title: 'Rating (scale of 1-10)'
        }
      };

      var material = new google.charts.Bar(document.getElementById('chart'));
      material.draw(data, options);
    },1000)
</script>

  </head>
  <body>
    <div id="chart" style="width: 550px; height: 350px"></div>
<button name="switch" value="switch">Switch Graph</button>
  </body>
</html>

如何在按钮点击时交换javascript

0 个答案: