快速入门

下面是一个显示饼图的网页的简单示例：

您可以将以下代码段复制到计算机上的 .html 文件中，然后在浏览器中打开该文件，以显示上面显示的饼图：

<html>
  <head>
    <!--Load the AJAX API-->
    <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
    <script type="text/javascript">

      // Load the Visualization API and the corechart package.
      google.charts.load('current', {'packages':['corechart']});

      // Set a callback to run when the Google Visualization API is loaded.
      google.charts.setOnLoadCallback(drawChart);

      // Callback that creates and populates a data table,
      // instantiates the pie chart, passes in the data and
      // draws it.
      function drawChart() {

        // Create the data table.
        var data = new google.visualization.DataTable();
        data.addColumn('string', 'Topping');
        data.addColumn('number', 'Slices');
        data.addRows([
          ['Mushrooms', 3],
          ['Onions', 1],
          ['Olives', 1],
          ['Zucchini', 1],
          ['Pepperoni', 2]
        ]);

        // Set chart options
        var options = {'title':'How Much Pizza I Ate Last Night',
                       'width':400,
                       'height':300};

        // Instantiate and draw our chart, passing in some options.
        var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
        chart.draw(data, options);
      }
    </script>
  </head>

  <body>
    <!--Div that will hold the pie chart-->
    <div id="chart_div"></div>
  </body>
</html>

条形图是怎样的呢？

将代码中的 google.visualization.PieChart 替换为 google.visualization.BarChart 并重新加载浏览器，将饼图转换为条形图。您可能会注意到，“切片”图例被截断。要解决此问题，请将 width 从 400 更改为 500，保存文件并重新加载浏览器。